mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 00/35 v4] separate operations from flags in the bio/request structs
The following patches begin to cleanup the request->cmd_flags and bio->bi_rw mess. We currently use cmd_flags to specify the operation, attributes and state of the request. For bi_rw we use it for similar info and also the priority but then also have another bi_flags field for state. At some point, we abused them so much we just made cmd_flags 64 bits, so we could add more. The following patches seperate the operation (read, write discard, flush, etc) from cmd_flags/bi_rw. This patchset was made against linux-next from today Feb 24 2016 (git tag next-20160224). I put a git tree here: https://github.com/mikechristie/linux-kernel.git v4: 1. Rebased to current linux-next tree. v3: 1. Used "=" instead of "|=" to setup bio bi_rw. 2. Removed __get_request cmd_flags compat code. 3. Merged initial dm related changes requested by Mike Snitzer. 4. Fixed ubd kbuild errors in flush related patches. 5. Fix 80 char col issues in several patches. 6. Fix issue with one of the btrfs patches where it looks like I reverted a patch when trying to fix a merge error. v2 1. Dropped arguments from submit_bio, and had callers setup bio. 2. Add REQ_OP_FLUSH for request_fn users and renamed REQ_FLUSH to REQ_PREFLUSH for make_request_fn users. 3. Dropped bio/rq_data_dir functions, and added a op_is_write function instead.
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 01/35] block/fs/drivers: remove rw argument from submit_bio
From: Mike Christie <mchristi at redhat.com>
This has callers of submit_bio/submit_bio_wait set the bio->bi_rw
instead of passing it in. This makes that use the same as
generic_make_request and how we set the other bio fields.
v2.
1. Set bi_rw instead of ORing it. For cloned bios, I still OR it
to keep the old behavior incase there bits we wanted to keep.
Signed-off-by: Mike Christie <mchristi at redhat.com>
Reviewed-by: Bart Van Assche <bart.vanassche at sandisk.com>
Reviewed-by: Christoph Hellwig <hch at lst.de>
---
block/bio.c | 7 +++----
block/blk-core.c | 11 ++++-------
block/blk-flush.c | 3 ++-
block/blk-lib.c | 9 ++++++---
drivers/block/drbd/drbd_actlog.c | 2 +-
drivers/block/drbd/drbd_bitmap.c | 4 ++--
drivers/block/floppy.c | 3 ++-
drivers/block/xen-blkback/blkback.c | 4 +++-
drivers/block/xen-blkfront.c | 4 ++--
drivers/md/bcache/debug.c | 6 ++++--
drivers/md/bcache/journal.c | 2 +-
drivers/md/bcache/super.c | 4 ++--
drivers/md/dm-bufio.c | 3 ++-
drivers/md/dm-io.c | 3 ++-
drivers/md/dm-log-writes.c | 9 ++++++---
drivers/md/dm-thin.c | 3 ++-
drivers/md/md.c | 10 +++++++---
drivers/md/raid1.c | 3 ++-
drivers/md/raid10.c | 4 +++-
drivers/md/raid5-cache.c | 7 ++++---
drivers/target/target_core_iblock.c | 24 +++++++++++++-----------
fs/btrfs/check-integrity.c | 18 ++++++++++--------
fs/btrfs/check-integrity.h | 4 ++--
fs/btrfs/disk-io.c | 3 ++-
fs/btrfs/extent_io.c | 7 ++++---
fs/btrfs/raid56.c | 17 ++++++++++++-----
fs/btrfs/scrub.c | 16 +++++++++++-----
fs/btrfs/volumes.c | 14 +++++++-------
fs/buffer.c | 3 ++-
fs/direct-io.c | 3 ++-
fs/ext4/crypto.c | 3 ++-
fs/ext4/page-io.c | 3 ++-
fs/ext4/readpage.c | 9 +++++----
fs/f2fs/data.c | 13 ++++++++-----
fs/f2fs/segment.c | 6 ++++--
fs/gfs2/lops.c | 3 ++-
fs/gfs2/meta_io.c | 3 ++-
fs/gfs2/ops_fstype.c | 3 ++-
fs/hfsplus/wrapper.c | 3 ++-
fs/jfs/jfs_logmgr.c | 6 ++++--
fs/jfs/jfs_metapage.c | 10 ++++++----
fs/logfs/dev_bdev.c | 15 ++++++++++-----
fs/mpage.c | 3 ++-
fs/nfs/blocklayout/blocklayout.c | 22 ++++++++++++----------
fs/nilfs2/segbuf.c | 3 ++-
fs/ocfs2/cluster/heartbeat.c | 12 +++++++-----
fs/xfs/xfs_aops.c | 3 ++-
fs/xfs/xfs_buf.c | 4 ++--
include/linux/bio.h | 2 +-
include/linux/fs.h | 2 +-
kernel/power/swap.c | 5 +++--
mm/page_io.c | 10 ++++++----
52 files changed, 212 insertions(+), 141 deletions(-)
diff --git a/block/bio.c b/block/bio.c
index cf75915..7e4d050 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -859,21 +859,20 @@ static void submit_bio_wait_endio(struct bio *bio)
/**
* submit_bio_wait - submit a bio, and wait until it completes
- * @rw: whether to %READ or %WRITE, or maybe to %READA (read ahead)
* @bio: The &struct bio which describes the I/O
*
* Simple wrapper around submit_bio(). Returns 0 on success, or the error from
* bio_endio() on failure.
*/
-int submit_bio_wait(int rw, struct bio *bio)
+int submit_bio_wait(struct bio *bio)
{
struct submit_bio_ret ret;
- rw |= REQ_SYNC;
init_completion(&ret.event);
bio->bi_private = &ret;
bio->bi_end_io = submit_bio_wait_endio;
- submit_bio(rw, bio);
+ bio->bi_rw |= REQ_SYNC;
+ submit_bio(bio);
wait_for_completion_io(&ret.event);
return ret.error;
diff --git a/block/blk-core.c b/block/blk-core.c
index 827f8ba..f23d1b0 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -2092,7 +2092,6 @@ EXPORT_SYMBOL(generic_make_request);
/**
* submit_bio - submit a bio to the block device layer for I/O
- * @rw: whether to %READ or %WRITE, or maybe to %READA (read ahead)
* @bio: The &struct bio which describes the I/O
*
* submit_bio() is very similar in purpose to generic_make_request(), and
@@ -2100,10 +2099,8 @@ EXPORT_SYMBOL(generic_make_request);
* interfaces; @bio must be presetup and ready for I/O.
*
*/
-blk_qc_t submit_bio(int rw, struct bio *bio)
+blk_qc_t submit_bio(struct bio *bio)
{
- bio->bi_rw |= rw;
-
/*
* If it's a regular read/write or a barrier with data attached,
* go through the normal accounting stuff before submission.
@@ -2111,12 +2108,12 @@ blk_qc_t submit_bio(int rw, struct bio *bio)
if (bio_has_data(bio)) {
unsigned int count;
- if (unlikely(rw & REQ_WRITE_SAME))
+ if (unlikely(bio->bi_rw & REQ_WRITE_SAME))
count = bdev_logical_block_size(bio->bi_bdev) >> 9;
else
count = bio_sectors(bio);
- if (rw & WRITE) {
+ if (bio->bi_rw & WRITE) {
count_vm_events(PGPGOUT, count);
} else {
task_io_account_read(bio->bi_iter.bi_size);
@@ -2127,7 +2124,7 @@ blk_qc_t submit_bio(int rw, struct bio *bio)
char b[BDEVNAME_SIZE];
printk(KERN_DEBUG "%s(%d): %s block %Lu on %s (%u sectors)\n",
current->comm, task_pid_nr(current),
- (rw & WRITE) ? "WRITE" : "READ",
+ (bio->bi_rw & WRITE) ? "WRITE" : "READ",
(unsigned long long)bio->bi_iter.bi_sector,
bdevname(bio->bi_bdev, b),
count);
diff --git a/block/blk-flush.c b/block/blk-flush.c
index 9c423e5..f2fbf9a 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -484,8 +484,9 @@ int blkdev_issue_flush(struct block_device *bdev, gfp_t
gfp_mask,
bio = bio_alloc(gfp_mask, 0);
bio->bi_bdev = bdev;
+ bio->bi_rw = WRITE_FLUSH;
- ret = submit_bio_wait(WRITE_FLUSH, bio);
+ ret = submit_bio_wait(bio);
/*
* The driver must store the error location in ->bi_sector, if
diff --git a/block/blk-lib.c b/block/blk-lib.c
index 9ebf653..87e3de4 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -102,13 +102,14 @@ int blkdev_issue_discard(struct block_device *bdev,
sector_t sector,
bio->bi_end_io = bio_batch_end_io;
bio->bi_bdev = bdev;
bio->bi_private = &bb;
+ bio->bi_rw = type;
bio->bi_iter.bi_size = req_sects << 9;
nr_sects -= req_sects;
sector = end_sect;
atomic_inc(&bb.done);
- submit_bio(type, bio);
+ submit_bio(bio);
/*
* We can loop for a long time in here, if someone does
@@ -177,6 +178,7 @@ int blkdev_issue_write_same(struct block_device *bdev,
sector_t sector,
bio->bi_io_vec->bv_page = page;
bio->bi_io_vec->bv_offset = 0;
bio->bi_io_vec->bv_len = bdev_logical_block_size(bdev);
+ bio->bi_rw = REQ_WRITE | REQ_WRITE_SAME;
if (nr_sects > max_write_same_sectors) {
bio->bi_iter.bi_size = max_write_same_sectors << 9;
@@ -188,7 +190,7 @@ int blkdev_issue_write_same(struct block_device *bdev,
sector_t sector,
}
atomic_inc(&bb.done);
- submit_bio(REQ_WRITE | REQ_WRITE_SAME, bio);
+ submit_bio(bio);
}
/* Wait for bios in-flight */
@@ -238,6 +240,7 @@ static int __blkdev_issue_zeroout(struct block_device *bdev,
sector_t sector,
bio->bi_bdev = bdev;
bio->bi_end_io = bio_batch_end_io;
bio->bi_private = &bb;
+ bio->bi_rw = WRITE;
while (nr_sects != 0) {
sz = min((sector_t) PAGE_SIZE >> 9 , nr_sects);
@@ -249,7 +252,7 @@ static int __blkdev_issue_zeroout(struct block_device *bdev,
sector_t sector,
}
ret = 0;
atomic_inc(&bb.done);
- submit_bio(WRITE, bio);
+ submit_bio(bio);
}
/* Wait for bios in-flight */
diff --git a/drivers/block/drbd/drbd_actlog.c b/drivers/block/drbd/drbd_actlog.c
index 10459a1..6069e15 100644
--- a/drivers/block/drbd/drbd_actlog.c
+++ b/drivers/block/drbd/drbd_actlog.c
@@ -177,7 +177,7 @@ static int _drbd_md_sync_page_io(struct drbd_device *device,
if (drbd_insert_fault(device, (rw & WRITE) ? DRBD_FAULT_MD_WR :
DRBD_FAULT_MD_RD))
bio_io_error(bio);
else
- submit_bio(rw, bio);
+ submit_bio(bio);
wait_until_done_or_force_detached(device, bdev, &device->md_io.done);
if (!bio->bi_error)
err = device->md_io.error;
diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index 92d6fc0..e8959fe 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -1011,12 +1011,12 @@ static void bm_page_io_async(struct drbd_bm_aio_ctx
*ctx, int page_nr) __must_ho
bio_add_page(bio, page, len, 0);
bio->bi_private = ctx;
bio->bi_end_io = drbd_bm_endio;
+ bio->bi_rw = rw;
if (drbd_insert_fault(device, (rw & WRITE) ? DRBD_FAULT_MD_WR :
DRBD_FAULT_MD_RD)) {
- bio->bi_rw |= rw;
bio_io_error(bio);
} else {
- submit_bio(rw, bio);
+ submit_bio(bio);
/* this should not count as user activity and cause the
* resync to throttle -- see drbd_rs_should_slow_down(). */
atomic_add(len >> 9, &device->rs_sect_ev);
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 84708a5..73ded25 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -3822,8 +3822,9 @@ static int __floppy_read_block_0(struct block_device
*bdev, int drive)
bio.bi_flags |= (1 << BIO_QUIET);
bio.bi_private = &cbdata;
bio.bi_end_io = floppy_rb0_cb;
+ bio.bi_rw = READ;
- submit_bio(READ, &bio);
+ submit_bio(&bio);
process_fd_request();
init_completion(&cbdata.complete);
diff --git a/drivers/block/xen-blkback/blkback.c
b/drivers/block/xen-blkback/blkback.c
index 4809c15..79fe493 100644
--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -1369,6 +1369,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring
*ring,
bio->bi_private = pending_req;
bio->bi_end_io = end_block_io_op;
bio->bi_iter.bi_sector = preq.sector_number;
+ bio->bi_rw = operation;
}
preq.sector_number += seg[i].nsec;
@@ -1386,13 +1387,14 @@ static int dispatch_rw_block_io(struct xen_blkif_ring
*ring,
bio->bi_bdev = preq.bdev;
bio->bi_private = pending_req;
bio->bi_end_io = end_block_io_op;
+ bio->bi_rw = operation;
}
atomic_set(&pending_req->pendcnt, nbio);
blk_start_plug(&plug);
for (i = 0; i < nbio; i++)
- submit_bio(operation, biolist[i]);
+ submit_bio(biolist[i]);
/* Let the I/Os go.. */
blk_finish_plug(&plug);
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 83eb9e6..7ba2ed1 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -2111,7 +2111,7 @@ static int blkif_recover(struct blkfront_info *info)
bio_trim(cloned_bio, offset, size);
cloned_bio->bi_private = split_bio;
cloned_bio->bi_end_io = split_bio_end;
- submit_bio(cloned_bio->bi_rw, cloned_bio);
+ submit_bio(cloned_bio);
}
/*
* Now we have to wait for all those smaller bios to
@@ -2120,7 +2120,7 @@ static int blkif_recover(struct blkfront_info *info)
continue;
}
/* We don't need to split this bio */
- submit_bio(bio->bi_rw, bio);
+ submit_bio(bio);
}
return 0;
diff --git a/drivers/md/bcache/debug.c b/drivers/md/bcache/debug.c
index 8b1f1d5..52b6bcf 100644
--- a/drivers/md/bcache/debug.c
+++ b/drivers/md/bcache/debug.c
@@ -52,9 +52,10 @@ void bch_btree_verify(struct btree *b)
bio->bi_bdev = PTR_CACHE(b->c, &b->key, 0)->bdev;
bio->bi_iter.bi_sector = PTR_OFFSET(&b->key, 0);
bio->bi_iter.bi_size = KEY_SIZE(&v->key) << 9;
+ bio->bi_rw = REQ_META|READ_SYNC;
bch_bio_map(bio, sorted);
- submit_bio_wait(REQ_META|READ_SYNC, bio);
+ submit_bio_wait(bio);
bch_bbio_free(bio, b->c);
memcpy(ondisk, sorted, KEY_SIZE(&v->key) << 9);
@@ -113,11 +114,12 @@ void bch_data_verify(struct cached_dev *dc, struct bio
*bio)
check = bio_clone(bio, GFP_NOIO);
if (!check)
return;
+ check->bi_rw |= READ_SYNC;
if (bio_alloc_pages(check, GFP_NOIO))
goto out_put;
- submit_bio_wait(READ_SYNC, check);
+ submit_bio_wait(check);
bio_for_each_segment(bv, bio, iter) {
void *p1 = kmap_atomic(bv.bv_page);
diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c
index 29eba72..af3f9f7 100644
--- a/drivers/md/bcache/journal.c
+++ b/drivers/md/bcache/journal.c
@@ -418,7 +418,7 @@ static void journal_discard_work(struct work_struct *work)
struct journal_device *ja container_of(work, struct journal_device,
discard_work);
- submit_bio(0, &ja->discard_bio);
+ submit_bio(&ja->discard_bio);
}
static void do_journal_discard(struct cache *ca)
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 8d0ead9..9e2eac8 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -212,7 +212,7 @@ static void __write_super(struct cache_sb *sb, struct bio
*bio)
unsigned i;
bio->bi_iter.bi_sector = SB_SECTOR;
- bio->bi_rw = REQ_SYNC|REQ_META;
+ bio->bi_rw = REQ_WRITE|REQ_SYNC|REQ_META;
bio->bi_iter.bi_size = SB_SIZE;
bch_bio_map(bio, NULL);
@@ -238,7 +238,7 @@ static void __write_super(struct cache_sb *sb, struct bio
*bio)
pr_debug("ver %llu, flags %llu, seq %llu",
sb->version, sb->flags, sb->seq);
- submit_bio(REQ_WRITE, bio);
+ submit_bio(bio);
}
static void bch_write_bdev_super_unlock(struct closure *cl)
diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c
index cd77216..9d3ee7f 100644
--- a/drivers/md/dm-bufio.c
+++ b/drivers/md/dm-bufio.c
@@ -634,6 +634,7 @@ static void use_inline_bio(struct dm_buffer *b, int rw,
sector_t block,
* the dm_buffer's inline bio is local to bufio.
*/
b->bio.bi_private = end_io;
+ b->bio.bi_rw = rw;
/*
* We assume that if len >= PAGE_SIZE ptr is page-aligned.
@@ -660,7 +661,7 @@ static void use_inline_bio(struct dm_buffer *b, int rw,
sector_t block,
ptr += PAGE_SIZE;
} while (len > 0);
- submit_bio(rw, &b->bio);
+ submit_bio(&b->bio);
}
static void submit_io(struct dm_buffer *b, int rw, sector_t block,
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
index 06d426e..50f17e3 100644
--- a/drivers/md/dm-io.c
+++ b/drivers/md/dm-io.c
@@ -322,6 +322,7 @@ static void do_region(int rw, unsigned region, struct
dm_io_region *where,
bio->bi_iter.bi_sector = where->sector + (where->count - remaining);
bio->bi_bdev = where->bdev;
bio->bi_end_io = endio;
+ bio->bi_rw = rw;
store_io_and_region_in_bio(bio, io, region);
if (rw & REQ_DISCARD) {
@@ -355,7 +356,7 @@ static void do_region(int rw, unsigned region, struct
dm_io_region *where,
}
atomic_inc(&io->count);
- submit_bio(rw, bio);
+ submit_bio(bio);
} while (remaining);
}
diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c
index 608302e..addcc4b 100644
--- a/drivers/md/dm-log-writes.c
+++ b/drivers/md/dm-log-writes.c
@@ -205,6 +205,7 @@ static int write_metadata(struct log_writes_c *lc, void
*entry,
bio->bi_bdev = lc->logdev->bdev;
bio->bi_end_io = log_end_io;
bio->bi_private = lc;
+ bio->bi_rw = WRITE;
page = alloc_page(GFP_KERNEL);
if (!page) {
@@ -226,7 +227,7 @@ static int write_metadata(struct log_writes_c *lc, void
*entry,
DMERR("Couldn't add page to the log block");
goto error_bio;
}
- submit_bio(WRITE, bio);
+ submit_bio(bio);
return 0;
error_bio:
bio_put(bio);
@@ -269,6 +270,7 @@ static int log_one_block(struct log_writes_c *lc,
bio->bi_bdev = lc->logdev->bdev;
bio->bi_end_io = log_end_io;
bio->bi_private = lc;
+ bio->bi_rw = WRITE;
for (i = 0; i < block->vec_cnt; i++) {
/*
@@ -279,7 +281,7 @@ static int log_one_block(struct log_writes_c *lc,
block->vecs[i].bv_len, 0);
if (ret != block->vecs[i].bv_len) {
atomic_inc(&lc->io_blocks);
- submit_bio(WRITE, bio);
+ submit_bio(bio);
bio = bio_alloc(GFP_KERNEL, block->vec_cnt - i);
if (!bio) {
DMERR("Couldn't alloc log bio");
@@ -290,6 +292,7 @@ static int log_one_block(struct log_writes_c *lc,
bio->bi_bdev = lc->logdev->bdev;
bio->bi_end_io = log_end_io;
bio->bi_private = lc;
+ bio->bi_rw = WRITE;
ret = bio_add_page(bio, block->vecs[i].bv_page,
block->vecs[i].bv_len, 0);
@@ -301,7 +304,7 @@ static int log_one_block(struct log_writes_c *lc,
}
sector += block->vecs[i].bv_len >> SECTOR_SHIFT;
}
- submit_bio(WRITE, bio);
+ submit_bio(bio);
out:
kfree(block->data);
kfree(block);
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 4fbbe1f..e39ad11 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -365,8 +365,9 @@ static int __blkdev_issue_discard_async(struct block_device
*bdev, sector_t sect
bio->bi_iter.bi_sector = sector;
bio->bi_bdev = bdev;
bio->bi_iter.bi_size = nr_sects << 9;
+ bio->bi_rw = type;
- submit_bio(type, bio);
+ submit_bio(bio);
return 0;
}
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 464627b..6f6102e 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -391,8 +391,9 @@ static void submit_flushes(struct work_struct *ws)
bi->bi_end_io = md_end_flush;
bi->bi_private = rdev;
bi->bi_bdev = rdev->bdev;
+ bi->bi_rw = WRITE_FLUSH;
atomic_inc(&mddev->flush_pending);
- submit_bio(WRITE_FLUSH, bi);
+ submit_bio(bi);
rcu_read_lock();
rdev_dec_pending(rdev, mddev);
}
@@ -736,9 +737,10 @@ void md_super_write(struct mddev *mddev, struct md_rdev
*rdev,
bio_add_page(bio, page, size, 0);
bio->bi_private = rdev;
bio->bi_end_io = super_written;
+ bio->bi_rw = WRITE_FLUSH_FUA;
atomic_inc(&mddev->pending_writes);
- submit_bio(WRITE_FLUSH_FUA, bio);
+ submit_bio(bio);
}
void md_super_wait(struct mddev *mddev)
@@ -755,6 +757,7 @@ int sync_page_io(struct md_rdev *rdev, sector_t sector, int
size,
bio->bi_bdev = (metadata_op && rdev->meta_bdev) ?
rdev->meta_bdev : rdev->bdev;
+ bio->bi_rw = rw;
if (metadata_op)
bio->bi_iter.bi_sector = sector + rdev->sb_start;
else if (rdev->mddev->reshape_position != MaxSector &&
@@ -764,7 +767,8 @@ int sync_page_io(struct md_rdev *rdev, sector_t sector, int
size,
else
bio->bi_iter.bi_sector = sector + rdev->data_offset;
bio_add_page(bio, page, size, 0);
- submit_bio_wait(rw, bio);
+
+ submit_bio_wait(bio);
ret = !bio->bi_error;
bio_put(bio);
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 4e3843f..f2d9c01 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2208,7 +2208,8 @@ static int narrow_write_error(struct r1bio *r1_bio, int i)
bio_trim(wbio, sector - r1_bio->sector, sectors);
wbio->bi_iter.bi_sector += rdev->data_offset;
wbio->bi_bdev = rdev->bdev;
- if (submit_bio_wait(WRITE, wbio) < 0)
+
+ if (submit_bio_wait(wbio) < 0)
/* failure! */
ok = rdev_set_badblocks(rdev, sector,
sectors, 0)
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 1c1447d..d0d84f3 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -2474,7 +2474,9 @@ static int narrow_write_error(struct r10bio *r10_bio, int
i)
choose_data_offset(r10_bio, rdev) +
(sector - r10_bio->sector));
wbio->bi_bdev = rdev->bdev;
- if (submit_bio_wait(WRITE, wbio) < 0)
+ wbio->bi_rw = WRITE;
+
+ if (submit_bio_wait(wbio) < 0)
/* Failure! */
ok = rdev_set_badblocks(rdev, sector,
sectors, 0)
diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index 9531f5f..2d56fdc 100644
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -254,7 +254,7 @@ static void r5l_submit_current_io(struct r5l_log *log)
__r5l_set_io_unit_state(io, IO_UNIT_IO_START);
spin_unlock_irqrestore(&log->io_list_lock, flags);
- submit_bio(WRITE, io->current_bio);
+ submit_bio(io->current_bio);
}
static struct bio *r5l_bio_alloc(struct r5l_log *log)
@@ -373,7 +373,7 @@ static void r5l_append_payload_page(struct r5l_log *log,
struct page *page)
io->current_bio = r5l_bio_alloc(log);
bio_chain(io->current_bio, prev);
- submit_bio(WRITE, prev);
+ submit_bio(prev);
}
if (!bio_add_page(io->current_bio, page, PAGE_SIZE, 0))
@@ -686,7 +686,8 @@ void r5l_flush_stripe_to_raid(struct r5l_log *log)
bio_reset(&log->flush_bio);
log->flush_bio.bi_bdev = log->rdev->bdev;
log->flush_bio.bi_end_io = r5l_log_flush_endio;
- submit_bio(WRITE_FLUSH, &log->flush_bio);
+ log->flush_bio.bi_rw = WRITE_FLUSH;
+ submit_bio(&log->flush_bio);
}
static void r5l_write_super(struct r5l_log *log, sector_t cp);
diff --git a/drivers/target/target_core_iblock.c
b/drivers/target/target_core_iblock.c
index abe4eb9..c352a64 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -312,7 +312,7 @@ static void iblock_bio_done(struct bio *bio)
}
static struct bio *
-iblock_get_bio(struct se_cmd *cmd, sector_t lba, u32 sg_num)
+iblock_get_bio(struct se_cmd *cmd, sector_t lba, u32 sg_num, int rw)
{
struct iblock_dev *ib_dev = IBLOCK_DEV(cmd->se_dev);
struct bio *bio;
@@ -334,18 +334,19 @@ iblock_get_bio(struct se_cmd *cmd, sector_t lba, u32
sg_num)
bio->bi_private = cmd;
bio->bi_end_io = &iblock_bio_done;
bio->bi_iter.bi_sector = lba;
+ bio->bi_rw = rw;
return bio;
}
-static void iblock_submit_bios(struct bio_list *list, int rw)
+static void iblock_submit_bios(struct bio_list *list)
{
struct blk_plug plug;
struct bio *bio;
blk_start_plug(&plug);
while ((bio = bio_list_pop(list)))
- submit_bio(rw, bio);
+ submit_bio(bio);
blk_finish_plug(&plug);
}
@@ -387,9 +388,10 @@ iblock_execute_sync_cache(struct se_cmd *cmd)
bio = bio_alloc(GFP_KERNEL, 0);
bio->bi_end_io = iblock_end_io_flush;
bio->bi_bdev = ib_dev->ibd_bd;
+ bio->bi_rw = WRITE_FLUSH;
if (!immed)
bio->bi_private = cmd;
- submit_bio(WRITE_FLUSH, bio);
+ submit_bio(bio);
return 0;
}
@@ -444,7 +446,7 @@ iblock_execute_write_same(struct se_cmd *cmd)
goto fail;
cmd->priv = ibr;
- bio = iblock_get_bio(cmd, block_lba, 1);
+ bio = iblock_get_bio(cmd, block_lba, 1, WRITE);
if (!bio)
goto fail_free_ibr;
@@ -457,7 +459,7 @@ iblock_execute_write_same(struct se_cmd *cmd)
while (bio_add_page(bio, sg_page(sg), sg->length, sg->offset)
!= sg->length) {
- bio = iblock_get_bio(cmd, block_lba, 1);
+ bio = iblock_get_bio(cmd, block_lba, 1, WRITE);
if (!bio)
goto fail_put_bios;
@@ -470,7 +472,7 @@ iblock_execute_write_same(struct se_cmd *cmd)
sectors -= 1;
}
- iblock_submit_bios(&list, WRITE);
+ iblock_submit_bios(&list);
return 0;
fail_put_bios:
@@ -678,7 +680,7 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist
*sgl, u32 sgl_nents,
return 0;
}
- bio = iblock_get_bio(cmd, block_lba, sgl_nents);
+ bio = iblock_get_bio(cmd, block_lba, sgl_nents, rw);
if (!bio)
goto fail_free_ibr;
@@ -698,11 +700,11 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist
*sgl, u32 sgl_nents,
while (bio_add_page(bio, sg_page(sg), sg->length, sg->offset)
!= sg->length) {
if (bio_cnt >= IBLOCK_MAX_BIO_PER_TASK) {
- iblock_submit_bios(&list, rw);
+ iblock_submit_bios(&list);
bio_cnt = 0;
}
- bio = iblock_get_bio(cmd, block_lba, sg_num);
+ bio = iblock_get_bio(cmd, block_lba, sg_num, rw);
if (!bio)
goto fail_put_bios;
@@ -722,7 +724,7 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist
*sgl, u32 sgl_nents,
goto fail_put_bios;
}
- iblock_submit_bios(&list, rw);
+ iblock_submit_bios(&list);
iblock_complete_cmd(cmd);
return 0;
diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c
index 861d472..9c51373 100644
--- a/fs/btrfs/check-integrity.c
+++ b/fs/btrfs/check-integrity.c
@@ -1671,6 +1671,7 @@ static int btrfsic_read_block(struct btrfsic_state *state,
}
bio->bi_bdev = block_ctx->dev->bdev;
bio->bi_iter.bi_sector = dev_bytenr >> 9;
+ bio->bi_rw = READ;
for (j = i; j < num_pages; j++) {
ret = bio_add_page(bio, block_ctx->pagev[j],
@@ -1683,7 +1684,7 @@ static int btrfsic_read_block(struct btrfsic_state *state,
"btrfsic: error, failed to add a single page!\n");
return -1;
}
- if (submit_bio_wait(READ, bio)) {
+ if (submit_bio_wait(bio)) {
printk(KERN_INFO
"btrfsic: read error at logical %llu dev %s!\n",
block_ctx->start, block_ctx->dev->name);
@@ -2916,9 +2917,10 @@ int btrfsic_submit_bh(int rw, struct buffer_head *bh)
return submit_bh(rw, bh);
}
-static void __btrfsic_submit_bio(int rw, struct bio *bio)
+static void __btrfsic_submit_bio(struct bio *bio)
{
struct btrfsic_dev_state *dev_state;
+ int rw = bio->bi_rw;
if (!btrfsic_is_initialized)
return;
@@ -3014,16 +3016,16 @@ leave:
mutex_unlock(&btrfsic_mutex);
}
-void btrfsic_submit_bio(int rw, struct bio *bio)
+void btrfsic_submit_bio(struct bio *bio)
{
- __btrfsic_submit_bio(rw, bio);
- submit_bio(rw, bio);
+ __btrfsic_submit_bio(bio);
+ submit_bio(bio);
}
-int btrfsic_submit_bio_wait(int rw, struct bio *bio)
+int btrfsic_submit_bio_wait(struct bio *bio)
{
- __btrfsic_submit_bio(rw, bio);
- return submit_bio_wait(rw, bio);
+ __btrfsic_submit_bio(bio);
+ return submit_bio_wait(bio);
}
int btrfsic_mount(struct btrfs_root *root,
diff --git a/fs/btrfs/check-integrity.h b/fs/btrfs/check-integrity.h
index 13b8566..c04e249 100644
--- a/fs/btrfs/check-integrity.h
+++ b/fs/btrfs/check-integrity.h
@@ -21,8 +21,8 @@
#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
int btrfsic_submit_bh(int rw, struct buffer_head *bh);
-void btrfsic_submit_bio(int rw, struct bio *bio);
-int btrfsic_submit_bio_wait(int rw, struct bio *bio);
+void btrfsic_submit_bio(struct bio *bio);
+int btrfsic_submit_bio_wait(struct bio *bio);
#else
#define btrfsic_submit_bh submit_bh
#define btrfsic_submit_bio submit_bio
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 2f75069..3437390 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3470,12 +3470,13 @@ static int write_dev_flush(struct btrfs_device *device,
int wait)
bio->bi_end_io = btrfs_end_empty_barrier;
bio->bi_bdev = device->bdev;
+ bio->bi_rw = WRITE_FLUSH;
init_completion(&device->flush_wait);
bio->bi_private = &device->flush_wait;
device->flush_bio = bio;
bio_get(bio);
- btrfsic_submit_bio(WRITE_FLUSH, bio);
+ btrfsic_submit_bio(bio);
return 0;
}
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 76a0c85..454100e 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2040,9 +2040,10 @@ int repair_io_failure(struct inode *inode, u64 start, u64
length, u64 logical,
return -EIO;
}
bio->bi_bdev = dev->bdev;
+ bio->bi_rw = WRITE_SYNC;
bio_add_page(bio, page, length, pg_offset);
- if (btrfsic_submit_bio_wait(WRITE_SYNC, bio)) {
+ if (btrfsic_submit_bio_wait(bio)) {
/* try to remap that extent elsewhere? */
bio_put(bio);
btrfs_dev_stat_inc_and_print(dev, BTRFS_DEV_STAT_WRITE_ERRS);
@@ -2725,14 +2726,14 @@ static int __must_check submit_one_bio(int rw, struct
bio *bio,
start = page_offset(page) + bvec->bv_offset;
bio->bi_private = NULL;
-
+ bio->bi_rw = rw;
bio_get(bio);
if (tree->ops && tree->ops->submit_bio_hook)
ret = tree->ops->submit_bio_hook(page->mapping->host, rw, bio,
mirror_num, bio_flags, start);
else
- btrfsic_submit_bio(rw, bio);
+ btrfsic_submit_bio(bio);
bio_put(bio);
return ret;
diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c
index 5516136..a8e66e4 100644
--- a/fs/btrfs/raid56.c
+++ b/fs/btrfs/raid56.c
@@ -1320,7 +1320,9 @@ write_data:
bio->bi_private = rbio;
bio->bi_end_io = raid_write_end_io;
- submit_bio(WRITE, bio);
+ bio->bi_rw = WRITE;
+
+ submit_bio(bio);
}
return;
@@ -1573,11 +1575,12 @@ static int raid56_rmw_stripe(struct btrfs_raid_bio
*rbio)
bio->bi_private = rbio;
bio->bi_end_io = raid_rmw_end_io;
+ bio->bi_rw = READ;
btrfs_bio_wq_end_io(rbio->fs_info, bio,
BTRFS_WQ_ENDIO_RAID56);
- submit_bio(READ, bio);
+ submit_bio(bio);
}
/* the actual write will happen once the reads are done */
return 0;
@@ -2097,11 +2100,12 @@ static int __raid56_parity_recover(struct btrfs_raid_bio
*rbio)
bio->bi_private = rbio;
bio->bi_end_io = raid_recover_end_io;
+ bio->bi_rw = READ;
btrfs_bio_wq_end_io(rbio->fs_info, bio,
BTRFS_WQ_ENDIO_RAID56);
- submit_bio(READ, bio);
+ submit_bio(bio);
}
out:
return 0;
@@ -2433,7 +2437,9 @@ submit_write:
bio->bi_private = rbio;
bio->bi_end_io = raid_write_end_io;
- submit_bio(WRITE, bio);
+ bio->bi_rw = WRITE;
+
+ submit_bio(bio);
}
return;
@@ -2610,11 +2616,12 @@ static void raid56_parity_scrub_stripe(struct
btrfs_raid_bio *rbio)
bio->bi_private = rbio;
bio->bi_end_io = raid56_parity_scrub_end_io;
+ bio->bi_rw = READ;
btrfs_bio_wq_end_io(rbio->fs_info, bio,
BTRFS_WQ_ENDIO_RAID56);
- submit_bio(READ, bio);
+ submit_bio(bio);
}
/* the actual write will happen once the reads are done */
return;
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index e42aa27..8315947 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -1504,8 +1504,9 @@ static void scrub_recheck_block(struct btrfs_fs_info
*fs_info,
sblock->no_io_error_seen = 0;
} else {
bio->bi_iter.bi_sector = page->physical >> 9;
+ bio->bi_rw = READ;
- if (btrfsic_submit_bio_wait(READ, bio))
+ if (btrfsic_submit_bio_wait(bio))
sblock->no_io_error_seen = 0;
}
@@ -1583,6 +1584,7 @@ static int scrub_repair_page_from_good_copy(struct
scrub_block *sblock_bad,
return -EIO;
bio->bi_bdev = page_bad->dev->bdev;
bio->bi_iter.bi_sector = page_bad->physical >> 9;
+ bio->bi_rw = WRITE;
ret = bio_add_page(bio, page_good->page, PAGE_SIZE, 0);
if (PAGE_SIZE != ret) {
@@ -1590,7 +1592,7 @@ static int scrub_repair_page_from_good_copy(struct
scrub_block *sblock_bad,
return -EIO;
}
- if (btrfsic_submit_bio_wait(WRITE, bio)) {
+ if (btrfsic_submit_bio_wait(bio)) {
btrfs_dev_stat_inc_and_print(page_bad->dev,
BTRFS_DEV_STAT_WRITE_ERRS);
btrfs_dev_replace_stats_inc(
@@ -1684,6 +1686,7 @@ again:
bio->bi_end_io = scrub_wr_bio_end_io;
bio->bi_bdev = sbio->dev->bdev;
bio->bi_iter.bi_sector = sbio->physical >> 9;
+ bio->bi_rw = WRITE;
sbio->err = 0;
} else if (sbio->physical + sbio->page_count * PAGE_SIZE !
spage->physical_for_dev_replace ||
@@ -1731,7 +1734,7 @@ static void scrub_wr_submit(struct scrub_ctx *sctx)
* orders the requests before sending them to the driver which
* doubled the write performance on spinning disks when measured
* with Linux 3.5 */
- btrfsic_submit_bio(WRITE, sbio->bio);
+ btrfsic_submit_bio(sbio->bio);
}
static void scrub_wr_bio_end_io(struct bio *bio)
@@ -2041,7 +2044,7 @@ static void scrub_submit(struct scrub_ctx *sctx)
sbio = sctx->bios[sctx->curr];
sctx->curr = -1;
scrub_pending_bio_inc(sctx);
- btrfsic_submit_bio(READ, sbio->bio);
+ btrfsic_submit_bio(sbio->bio);
}
static int scrub_add_page_to_rd_bio(struct scrub_ctx *sctx,
@@ -2088,6 +2091,7 @@ again:
bio->bi_end_io = scrub_bio_end_io;
bio->bi_bdev = sbio->dev->bdev;
bio->bi_iter.bi_sector = sbio->physical >> 9;
+ bio->bi_rw = READ;
sbio->err = 0;
} else if (sbio->physical + sbio->page_count * PAGE_SIZE !
spage->physical ||
@@ -4390,6 +4394,8 @@ static int write_page_nocow(struct scrub_ctx *sctx,
bio->bi_iter.bi_size = 0;
bio->bi_iter.bi_sector = physical_for_dev_replace >> 9;
bio->bi_bdev = dev->bdev;
+ bio->bi_rw = WRITE_SYNC;
+
ret = bio_add_page(bio, page, PAGE_CACHE_SIZE, 0);
if (ret != PAGE_CACHE_SIZE) {
leave_with_eio:
@@ -4398,7 +4404,7 @@ leave_with_eio:
return -EIO;
}
- if (btrfsic_submit_bio_wait(WRITE_SYNC, bio))
+ if (btrfsic_submit_bio_wait(bio))
goto leave_with_eio;
bio_put(bio);
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index d883278..f87678f 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -462,7 +462,7 @@ loop_lock:
sync_pending = 0;
}
- btrfsic_submit_bio(cur->bi_rw, cur);
+ btrfsic_submit_bio(cur);
num_run++;
batch_run++;
@@ -5933,7 +5933,7 @@ static void btrfs_end_bio(struct bio *bio)
*/
static noinline void btrfs_schedule_bio(struct btrfs_root *root,
struct btrfs_device *device,
- int rw, struct bio *bio)
+ struct bio *bio)
{
int should_queue = 1;
struct btrfs_pending_bios *pending_bios;
@@ -5944,9 +5944,9 @@ static noinline void btrfs_schedule_bio(struct btrfs_root
*root,
}
/* don't bother with additional async steps for reads, right now */
- if (!(rw & REQ_WRITE)) {
+ if (!(bio->bi_rw & REQ_WRITE)) {
bio_get(bio);
- btrfsic_submit_bio(rw, bio);
+ btrfsic_submit_bio(bio);
bio_put(bio);
return;
}
@@ -5960,7 +5960,6 @@ static noinline void btrfs_schedule_bio(struct btrfs_root
*root,
atomic_inc(&root->fs_info->nr_async_bios);
WARN_ON(bio->bi_next);
bio->bi_next = NULL;
- bio->bi_rw |= rw;
spin_lock(&device->io_lock);
if (bio->bi_rw & REQ_SYNC)
@@ -5994,6 +5993,7 @@ static void submit_stripe_bio(struct btrfs_root *root,
struct btrfs_bio *bbio,
btrfs_io_bio(bio)->stripe_index = dev_nr;
bio->bi_end_io = btrfs_end_bio;
bio->bi_iter.bi_sector = physical >> 9;
+ bio->bi_rw |= rw;
#ifdef DEBUG
{
struct rcu_string *name;
@@ -6012,9 +6012,9 @@ static void submit_stripe_bio(struct btrfs_root *root,
struct btrfs_bio *bbio,
btrfs_bio_counter_inc_noblocked(root->fs_info);
if (async)
- btrfs_schedule_bio(root, dev, rw, bio);
+ btrfs_schedule_bio(root, dev, bio);
else
- btrfsic_submit_bio(rw, bio);
+ btrfsic_submit_bio(bio);
}
static void bbio_error(struct btrfs_bio *bbio, struct bio *bio, u64 logical)
diff --git a/fs/buffer.c b/fs/buffer.c
index 33be296..ef70d65 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -3030,8 +3030,9 @@ static int submit_bh_wbc(int rw, struct buffer_head *bh,
rw |= REQ_META;
if (buffer_prio(bh))
rw |= REQ_PRIO;
+ bio->bi_rw = rw;
- submit_bio(rw, bio);
+ submit_bio(bio);
return 0;
}
diff --git a/fs/direct-io.c b/fs/direct-io.c
index 7487174..1bce5c3 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -374,6 +374,7 @@ dio_bio_alloc(struct dio *dio, struct dio_submit *sdio,
bio->bi_bdev = bdev;
bio->bi_iter.bi_sector = first_sector;
+ bio->bi_rw = dio->rw;
if (dio->is_async)
bio->bi_end_io = dio_bio_end_aio;
else
@@ -411,7 +412,7 @@ static inline void dio_bio_submit(struct dio *dio, struct
dio_submit *sdio)
sdio->logical_offset_in_bio);
dio->bio_cookie = BLK_QC_T_NONE;
} else
- dio->bio_cookie = submit_bio(dio->rw, bio);
+ dio->bio_cookie = submit_bio(bio);
sdio->bio = NULL;
sdio->boundary = 0;
diff --git a/fs/ext4/crypto.c b/fs/ext4/crypto.c
index edc053a..18b8893 100644
--- a/fs/ext4/crypto.c
+++ b/fs/ext4/crypto.c
@@ -422,6 +422,7 @@ int ext4_encrypted_zeroout(struct inode *inode, ext4_lblk_t
lblk,
bio->bi_bdev = inode->i_sb->s_bdev;
bio->bi_iter.bi_sector pblk <<
(inode->i_sb->s_blocksize_bits - 9);
+ bio->bi_rw = WRITE;
ret = bio_add_page(bio, ciphertext_page,
inode->i_sb->s_blocksize, 0);
if (ret != inode->i_sb->s_blocksize) {
@@ -433,7 +434,7 @@ int ext4_encrypted_zeroout(struct inode *inode, ext4_lblk_t
lblk,
err = -EIO;
goto errout;
}
- err = submit_bio_wait(WRITE, bio);
+ err = submit_bio_wait(bio);
if ((err == 0) && bio->bi_error)
err = -EIO;
bio_put(bio);
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index 090b349..cf63ac3 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -356,7 +356,8 @@ void ext4_io_submit(struct ext4_io_submit *io)
int io_op = io->io_wbc->sync_mode == WB_SYNC_ALL ?
WRITE_SYNC : WRITE;
bio_get(io->io_bio);
- submit_bio(io_op, io->io_bio);
+ io->io_bio->bi_rw = io_op;
+ submit_bio(io->io_bio);
bio_put(io->io_bio);
}
io->io_bio = NULL;
diff --git a/fs/ext4/readpage.c b/fs/ext4/readpage.c
index 5dc5e95..893dc15 100644
--- a/fs/ext4/readpage.c
+++ b/fs/ext4/readpage.c
@@ -271,7 +271,7 @@ int ext4_mpage_readpages(struct address_space *mapping,
*/
if (bio && (last_block_in_bio != blocks[0] - 1)) {
submit_and_realloc:
- submit_bio(READ, bio);
+ submit_bio(bio);
bio = NULL;
}
if (bio == NULL) {
@@ -294,6 +294,7 @@ int ext4_mpage_readpages(struct address_space *mapping,
bio->bi_iter.bi_sector = blocks[0] << (blkbits - 9);
bio->bi_end_io = mpage_end_io;
bio->bi_private = ctx;
+ bio->bi_rw = READ;
}
length = first_hole << blkbits;
@@ -303,14 +304,14 @@ int ext4_mpage_readpages(struct address_space *mapping,
if (((map.m_flags & EXT4_MAP_BOUNDARY) &&
(relative_block == map.m_len)) ||
(first_hole != blocks_per_page)) {
- submit_bio(READ, bio);
+ submit_bio(bio);
bio = NULL;
} else
last_block_in_bio = blocks[blocks_per_page - 1];
goto next_page;
confused:
if (bio) {
- submit_bio(READ, bio);
+ submit_bio(bio);
bio = NULL;
}
if (!PageUptodate(page))
@@ -323,6 +324,6 @@ int ext4_mpage_readpages(struct address_space *mapping,
}
BUG_ON(pages && !list_empty(pages));
if (bio)
- submit_bio(READ, bio);
+ submit_bio(bio);
return 0;
}
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index a6e7133..ff623b2 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -109,8 +109,9 @@ static void __submit_merged_bio(struct f2fs_bio_info *io)
trace_f2fs_submit_read_bio(io->sbi->sb, fio, io->bio);
else
trace_f2fs_submit_write_bio(io->sbi->sb, fio, io->bio);
+ io->bio->bi_rw = fio->rw;
- submit_bio(fio->rw, io->bio);
+ submit_bio(io->bio);
io->bio = NULL;
}
@@ -220,8 +221,9 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio)
bio_put(bio);
return -EFAULT;
}
+ bio->bi_rw = fio->rw;
- submit_bio(fio->rw, bio);
+ submit_bio(bio);
return 0;
}
@@ -969,7 +971,7 @@ got_it:
*/
if (bio && (last_block_in_bio != block_nr - 1)) {
submit_and_realloc:
- submit_bio(READ, bio);
+ submit_bio(bio);
bio = NULL;
}
if (bio == NULL) {
@@ -998,6 +1000,7 @@ submit_and_realloc:
bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(block_nr);
bio->bi_end_io = f2fs_read_end_io;
bio->bi_private = ctx;
+ bio->bi_rw = READ;
}
if (bio_add_page(bio, page, blocksize, 0) < blocksize)
@@ -1012,7 +1015,7 @@ set_error_page:
goto next_page;
confused:
if (bio) {
- submit_bio(READ, bio);
+ submit_bio(bio);
bio = NULL;
}
unlock_page(page);
@@ -1022,7 +1025,7 @@ next_page:
}
BUG_ON(pages && !list_empty(pages));
if (bio)
- submit_bio(READ, bio);
+ submit_bio(bio);
return 0;
}
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index d8e13b0..34e99fe 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -402,7 +402,8 @@ repeat:
fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list);
bio->bi_bdev = sbi->sb->s_bdev;
- ret = submit_bio_wait(WRITE_FLUSH, bio);
+ bio->bi_rw = WRITE_FLUSH;
+ ret = submit_bio_wait(bio);
llist_for_each_entry_safe(cmd, next,
fcc->dispatch_list, llnode) {
@@ -434,7 +435,8 @@ int f2fs_issue_flush(struct f2fs_sb_info *sbi)
int ret;
bio->bi_bdev = sbi->sb->s_bdev;
- ret = submit_bio_wait(WRITE_FLUSH, bio);
+ bio->bi_rw = WRITE_FLUSH;
+ ret = submit_bio_wait(bio);
bio_put(bio);
return ret;
}
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index d5369a1..ce28242 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -240,7 +240,8 @@ void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int rw)
{
if (sdp->sd_log_bio) {
atomic_inc(&sdp->sd_log_in_flight);
- submit_bio(rw, sdp->sd_log_bio);
+ sdp->sd_log_bio->bi_rw = rw;
+ submit_bio(sdp->sd_log_bio);
sdp->sd_log_bio = NULL;
}
}
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index e137d96..87a3abc 100644
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -230,7 +230,8 @@ static void gfs2_submit_bhs(int rw, struct buffer_head
*bhs[], int num)
bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh));
}
bio->bi_end_io = gfs2_meta_read_endio;
- submit_bio(rw, bio);
+ bio->bi_rw = rw;
+ submit_bio(bio);
}
/**
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index dbed9e2..4872a61 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -246,7 +246,8 @@ static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t
sector, int silent)
bio->bi_end_io = end_bio_io_page;
bio->bi_private = page;
- submit_bio(READ_SYNC | REQ_META, bio);
+ bio->bi_rw = READ_SYNC | REQ_META;
+ submit_bio(bio);
wait_on_page_locked(page);
bio_put(bio);
if (!PageUptodate(page)) {
diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c
index cc62356..d026bb3 100644
--- a/fs/hfsplus/wrapper.c
+++ b/fs/hfsplus/wrapper.c
@@ -65,6 +65,7 @@ int hfsplus_submit_bio(struct super_block *sb, sector_t
sector,
bio = bio_alloc(GFP_NOIO, 1);
bio->bi_iter.bi_sector = sector;
bio->bi_bdev = sb->s_bdev;
+ bio->bi_rw = rw;
if (!(rw & WRITE) && data)
*data = (u8 *)buf + offset;
@@ -83,7 +84,7 @@ int hfsplus_submit_bio(struct super_block *sb, sector_t
sector,
buf = (u8 *)buf + len;
}
- ret = submit_bio_wait(rw, bio);
+ ret = submit_bio_wait(bio);
out:
bio_put(bio);
return ret < 0 ? ret : 0;
diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c
index a270cb7..b0e068f 100644
--- a/fs/jfs/jfs_logmgr.c
+++ b/fs/jfs/jfs_logmgr.c
@@ -2004,12 +2004,13 @@ static int lbmRead(struct jfs_log * log, int pn, struct
lbuf ** bpp)
bio->bi_end_io = lbmIODone;
bio->bi_private = bp;
+ bio->bi_rw = READ_SYNC;
/*check if journaling to disk has been disabled*/
if (log->no_integrity) {
bio->bi_iter.bi_size = 0;
lbmIODone(bio);
} else {
- submit_bio(READ_SYNC, bio);
+ submit_bio(bio);
}
wait_event(bp->l_ioevent, (bp->l_flag != lbmREAD));
@@ -2147,13 +2148,14 @@ static void lbmStartIO(struct lbuf * bp)
bio->bi_end_io = lbmIODone;
bio->bi_private = bp;
+ bio->bi_rw = WRITE_SYNC;
/* check if journaling to disk has been disabled */
if (log->no_integrity) {
bio->bi_iter.bi_size = 0;
lbmIODone(bio);
} else {
- submit_bio(WRITE_SYNC, bio);
+ submit_bio(bio);
INCREMENT(lmStat.submitted);
}
}
diff --git a/fs/jfs/jfs_metapage.c b/fs/jfs/jfs_metapage.c
index a3eb316..bc29972 100644
--- a/fs/jfs/jfs_metapage.c
+++ b/fs/jfs/jfs_metapage.c
@@ -411,7 +411,7 @@ static int metapage_writepage(struct page *page, struct
writeback_control *wbc)
inc_io(page);
if (!bio->bi_iter.bi_size)
goto dump_bio;
- submit_bio(WRITE, bio);
+ submit_bio(bio);
nr_underway++;
bio = NULL;
} else
@@ -434,6 +434,7 @@ static int metapage_writepage(struct page *page, struct
writeback_control *wbc)
bio->bi_iter.bi_sector = pblock << (inode->i_blkbits - 9);
bio->bi_end_io = metapage_write_end_io;
bio->bi_private = page;
+ bio->bi_rw = WRITE;
/* Don't call bio_add_page yet, we may add to this vec */
bio_offset = offset;
@@ -448,7 +449,7 @@ static int metapage_writepage(struct page *page, struct
writeback_control *wbc)
if (!bio->bi_iter.bi_size)
goto dump_bio;
- submit_bio(WRITE, bio);
+ submit_bio(bio);
nr_underway++;
}
if (redirty)
@@ -506,7 +507,7 @@ static int metapage_readpage(struct file *fp, struct page
*page)
insert_metapage(page, NULL);
inc_io(page);
if (bio)
- submit_bio(READ, bio);
+ submit_bio(bio);
bio = bio_alloc(GFP_NOFS, 1);
bio->bi_bdev = inode->i_sb->s_bdev;
@@ -514,6 +515,7 @@ static int metapage_readpage(struct file *fp, struct page
*page)
pblock << (inode->i_blkbits - 9);
bio->bi_end_io = metapage_read_end_io;
bio->bi_private = page;
+ bio->bi_rw = READ;
len = xlen << inode->i_blkbits;
offset = block_offset << inode->i_blkbits;
if (bio_add_page(bio, page, len, offset) < len)
@@ -523,7 +525,7 @@ static int metapage_readpage(struct file *fp, struct page
*page)
block_offset++;
}
if (bio)
- submit_bio(READ, bio);
+ submit_bio(bio);
else
unlock_page(page);
diff --git a/fs/logfs/dev_bdev.c b/fs/logfs/dev_bdev.c
index a709d80..9e690ad 100644
--- a/fs/logfs/dev_bdev.c
+++ b/fs/logfs/dev_bdev.c
@@ -29,8 +29,9 @@ static int sync_request(struct page *page, struct block_device
*bdev, int rw)
bio.bi_bdev = bdev;
bio.bi_iter.bi_sector = page->index * (PAGE_SIZE >> 9);
bio.bi_iter.bi_size = PAGE_SIZE;
+ bio.bi_rw = rw;
- return submit_bio_wait(rw, &bio);
+ return submit_bio_wait(&bio);
}
static int bdev_readpage(void *_sb, struct page *page)
@@ -95,8 +96,9 @@ static int __bdev_writeseg(struct super_block *sb, u64 ofs,
pgoff_t index,
bio->bi_iter.bi_sector = ofs >> 9;
bio->bi_private = sb;
bio->bi_end_io = writeseg_end_io;
+ bio->bi_rw = WRITE;
atomic_inc(&super->s_pending_writes);
- submit_bio(WRITE, bio);
+ submit_bio(bio);
ofs += i * PAGE_SIZE;
index += i;
@@ -122,8 +124,9 @@ static int __bdev_writeseg(struct super_block *sb, u64 ofs,
pgoff_t index,
bio->bi_iter.bi_sector = ofs >> 9;
bio->bi_private = sb;
bio->bi_end_io = writeseg_end_io;
+ bio->bi_rw = WRITE;
atomic_inc(&super->s_pending_writes);
- submit_bio(WRITE, bio);
+ submit_bio(bio);
return 0;
}
@@ -185,8 +188,9 @@ static int do_erase(struct super_block *sb, u64 ofs, pgoff_t
index,
bio->bi_iter.bi_sector = ofs >> 9;
bio->bi_private = sb;
bio->bi_end_io = erase_end_io;
+ bio->bi_rw = WRITE;
atomic_inc(&super->s_pending_writes);
- submit_bio(WRITE, bio);
+ submit_bio(bio);
ofs += i * PAGE_SIZE;
index += i;
@@ -206,8 +210,9 @@ static int do_erase(struct super_block *sb, u64 ofs, pgoff_t
index,
bio->bi_iter.bi_sector = ofs >> 9;
bio->bi_private = sb;
bio->bi_end_io = erase_end_io;
+ bio->bi_rw = WRITE;
atomic_inc(&super->s_pending_writes);
- submit_bio(WRITE, bio);
+ submit_bio(bio);
return 0;
}
diff --git a/fs/mpage.c b/fs/mpage.c
index 6bd9fd9..9479e73 100644
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -59,8 +59,9 @@ static void mpage_end_io(struct bio *bio)
static struct bio *mpage_bio_submit(int rw, struct bio *bio)
{
bio->bi_end_io = mpage_end_io;
+ bio->bi_rw = rw;
guard_bio_eod(rw, bio);
- submit_bio(rw, bio);
+ submit_bio(bio);
return NULL;
}
diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c
index ddd0138..8c0443c 100644
--- a/fs/nfs/blocklayout/blocklayout.c
+++ b/fs/nfs/blocklayout/blocklayout.c
@@ -102,14 +102,15 @@ static inline void put_parallel(struct parallel_io *p)
}
static struct bio *
-bl_submit_bio(int rw, struct bio *bio)
+bl_submit_bio(struct bio *bio)
{
if (bio) {
get_parallel(bio->bi_private);
dprintk("%s submitting %s bio %u@%llu\n", __func__,
- rw == READ ? "read" : "write", bio->bi_iter.bi_size,
+ bio->bi_rw == READ ? "read" : "write",
+ bio->bi_iter.bi_size,
(unsigned long long)bio->bi_iter.bi_sector);
- submit_bio(rw, bio);
+ submit_bio(bio);
}
return NULL;
}
@@ -158,7 +159,7 @@ do_add_page_to_bio(struct bio *bio, int npg, int rw,
sector_t isect,
if (disk_addr < map->start || disk_addr >= map->start +
map->len) {
if (!dev->map(dev, disk_addr, map))
return ERR_PTR(-EIO);
- bio = bl_submit_bio(rw, bio);
+ bio = bl_submit_bio(bio);
}
disk_addr += map->disk_offset;
disk_addr -= map->start;
@@ -174,9 +175,10 @@ retry:
disk_addr >> SECTOR_SHIFT, end_io, par);
if (!bio)
return ERR_PTR(-ENOMEM);
+ bio->bi_rw = rw;
}
if (bio_add_page(bio, page, *len, offset) < *len) {
- bio = bl_submit_bio(rw, bio);
+ bio = bl_submit_bio(bio);
goto retry;
}
return bio;
@@ -252,7 +254,7 @@ bl_read_pagelist(struct nfs_pgio_header *header)
for (i = pg_index; i < header->page_array.npages; i++) {
if (extent_length <= 0) {
/* We've used up the previous extent */
- bio = bl_submit_bio(READ, bio);
+ bio = bl_submit_bio(bio);
/* Get the next one */
if (!ext_tree_lookup(bl, isect, &be, false)) {
@@ -273,7 +275,7 @@ bl_read_pagelist(struct nfs_pgio_header *header)
}
if (is_hole(&be)) {
- bio = bl_submit_bio(READ, bio);
+ bio = bl_submit_bio(bio);
/* Fill hole w/ zeroes w/o accessing device */
dprintk("%s Zeroing page for hole\n", __func__);
zero_user_segment(pages[i], pg_offset, pg_len);
@@ -306,7 +308,7 @@ bl_read_pagelist(struct nfs_pgio_header *header)
header->res.count = (isect << SECTOR_SHIFT) -
header->args.offset;
}
out:
- bl_submit_bio(READ, bio);
+ bl_submit_bio(bio);
blk_finish_plug(&plug);
put_parallel(par);
return PNFS_ATTEMPTED;
@@ -398,7 +400,7 @@ bl_write_pagelist(struct nfs_pgio_header *header, int sync)
for (i = pg_index; i < header->page_array.npages; i++) {
if (extent_length <= 0) {
/* We've used up the previous extent */
- bio = bl_submit_bio(WRITE, bio);
+ bio = bl_submit_bio(bio);
/* Get the next one */
if (!ext_tree_lookup(bl, isect, &be, true)) {
header->pnfs_error = -EINVAL;
@@ -427,7 +429,7 @@ bl_write_pagelist(struct nfs_pgio_header *header, int sync)
header->res.count = header->args.count;
out:
- bl_submit_bio(WRITE, bio);
+ bl_submit_bio(bio);
blk_finish_plug(&plug);
put_parallel(par);
return PNFS_ATTEMPTED;
diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c
index f63620c..7666f1d 100644
--- a/fs/nilfs2/segbuf.c
+++ b/fs/nilfs2/segbuf.c
@@ -368,7 +368,8 @@ static int nilfs_segbuf_submit_bio(struct
nilfs_segment_buffer *segbuf,
bio->bi_end_io = nilfs_end_bio_write;
bio->bi_private = segbuf;
- submit_bio(mode, bio);
+ bio->bi_rw = mode;
+ submit_bio(bio);
segbuf->sb_nbio++;
wi->bio = NULL;
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index 1d3bf9e..bbc6203 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -531,7 +531,7 @@ static void o2hb_bio_end_io(struct bio *bio)
static struct bio *o2hb_setup_one_bio(struct o2hb_region *reg,
struct o2hb_bio_wait_ctxt *wc,
unsigned int *current_slot,
- unsigned int max_slots)
+ unsigned int max_slots, int rw)
{
int len, current_page;
unsigned int vec_len, vec_start;
@@ -557,6 +557,7 @@ static struct bio *o2hb_setup_one_bio(struct o2hb_region
*reg,
bio->bi_bdev = reg->hr_bdev;
bio->bi_private = wc;
bio->bi_end_io = o2hb_bio_end_io;
+ bio->bi_rw = rw;
vec_start = (cs << bits) % PAGE_CACHE_SIZE;
while(cs < max_slots) {
@@ -592,7 +593,8 @@ static int o2hb_read_slots(struct o2hb_region *reg,
o2hb_bio_wait_init(&wc);
while(current_slot < max_slots) {
- bio = o2hb_setup_one_bio(reg, &wc, ¤t_slot, max_slots);
+ bio = o2hb_setup_one_bio(reg, &wc, ¤t_slot, max_slots,
+ READ);
if (IS_ERR(bio)) {
status = PTR_ERR(bio);
mlog_errno(status);
@@ -600,7 +602,7 @@ static int o2hb_read_slots(struct o2hb_region *reg,
}
atomic_inc(&wc.wc_num_reqs);
- submit_bio(READ, bio);
+ submit_bio(bio);
}
status = 0;
@@ -624,7 +626,7 @@ static int o2hb_issue_node_write(struct o2hb_region *reg,
slot = o2nm_this_node();
- bio = o2hb_setup_one_bio(reg, write_wc, &slot, slot+1);
+ bio = o2hb_setup_one_bio(reg, write_wc, &slot, slot+1, WRITE_SYNC);
if (IS_ERR(bio)) {
status = PTR_ERR(bio);
mlog_errno(status);
@@ -632,7 +634,7 @@ static int o2hb_issue_node_write(struct o2hb_region *reg,
}
atomic_inc(&write_wc->wc_num_reqs);
- submit_bio(WRITE_SYNC, bio);
+ submit_bio(bio);
status = 0;
bail:
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index a378373..9cd38d1 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -393,7 +393,8 @@ xfs_submit_ioend_bio(
atomic_inc(&ioend->io_remaining);
bio->bi_private = ioend;
bio->bi_end_io = xfs_end_bio;
- submit_bio(wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : WRITE, bio);
+ bio->bi_rw = (wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : WRITE);
+ submit_bio(bio);
}
STATIC struct bio *
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index 9a2191b..079bb77 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -1170,7 +1170,7 @@ next_chunk:
bio->bi_iter.bi_sector = sector;
bio->bi_end_io = xfs_buf_bio_end_io;
bio->bi_private = bp;
-
+ bio->bi_rw = rw;
for (; size && nr_pages; nr_pages--, page_index++) {
int rbytes, nbytes = PAGE_SIZE - offset;
@@ -1194,7 +1194,7 @@ next_chunk:
flush_kernel_vmap_range(bp->b_addr,
xfs_buf_vmap_len(bp));
}
- submit_bio(rw, bio);
+ submit_bio(bio);
if (size)
goto next_chunk;
} else {
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 5349e68..9f0e2cf 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -441,7 +441,7 @@ static inline void bio_io_error(struct bio *bio)
struct request_queue;
extern int bio_phys_segments(struct request_queue *, struct bio *);
-extern int submit_bio_wait(int rw, struct bio *bio);
+extern int submit_bio_wait(struct bio *bio);
extern void bio_advance(struct bio *, unsigned);
extern void bio_init(struct bio *);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 2a15fe2..3d9fdf4 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2686,7 +2686,7 @@ static inline void remove_inode_hash(struct inode *inode)
extern void inode_sb_list_add(struct inode *inode);
#ifdef CONFIG_BLOCK
-extern blk_qc_t submit_bio(int, struct bio *);
+extern blk_qc_t submit_bio(struct bio *);
extern int bdev_read_only(struct block_device *);
#endif
extern int set_blocksize(struct block_device *, int);
diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index 12cd989..4d050eb 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -260,6 +260,7 @@ static int hib_submit_io(int rw, pgoff_t page_off, void
*addr,
bio = bio_alloc(__GFP_RECLAIM | __GFP_HIGH, 1);
bio->bi_iter.bi_sector = page_off * (PAGE_SIZE >> 9);
bio->bi_bdev = hib_resume_bdev;
+ bio->bi_rw = rw;
if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) {
printk(KERN_ERR "PM: Adding page to bio failed at %llu\n",
@@ -272,9 +273,9 @@ static int hib_submit_io(int rw, pgoff_t page_off, void
*addr,
bio->bi_end_io = hib_end_io;
bio->bi_private = hb;
atomic_inc(&hb->count);
- submit_bio(rw, bio);
+ submit_bio(bio);
} else {
- error = submit_bio_wait(rw, bio);
+ error = submit_bio_wait(bio);
bio_put(bio);
}
diff --git a/mm/page_io.c b/mm/page_io.c
index b995a5b..e8a18a7 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -253,7 +253,7 @@ int __swap_writepage(struct page *page, struct
writeback_control *wbc,
bio_end_io_t end_write_func)
{
struct bio *bio;
- int ret, rw = WRITE;
+ int ret;
struct swap_info_struct *sis = page_swap_info(page);
if (sis->flags & SWP_FILE) {
@@ -311,12 +311,13 @@ int __swap_writepage(struct page *page, struct
writeback_control *wbc,
ret = -ENOMEM;
goto out;
}
+ bio->bi_rw = WRITE;
if (wbc->sync_mode == WB_SYNC_ALL)
- rw |= REQ_SYNC;
+ bio->bi_rw |= REQ_SYNC;
count_vm_event(PSWPOUT);
set_page_writeback(page);
unlock_page(page);
- submit_bio(rw, bio);
+ submit_bio(bio);
out:
return ret;
}
@@ -358,8 +359,9 @@ int swap_readpage(struct page *page)
ret = -ENOMEM;
goto out;
}
+ bio->bi_rw = READ;
count_vm_event(PSWPIN);
- submit_bio(READ, bio);
+ submit_bio(bio);
out:
return ret;
}
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 02/35] block: add REQ_OP definitions and bi_op/op fields
From: Mike Christie <mchristi at redhat.com>
The following patches separate the operation (write, read, discard,
etc) from the flags in bi_rw/cmd_flags. This patch adds definitions
for request/bio operations, adds fields to the request/bio to set
them, and some temporary compat code so the kernel/modules can use
either one. In the final patches this compat code will be removed
when everything is converted.
Also, in this patch the REQ_OPs match the REQ rq_flag_bits ones
for compat reasons while all the code is converted in this set. In the
last patches that will also be removed.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
block/blk-core.c | 19 ++++++++++++++++---
include/linux/blk_types.h | 15 ++++++++++++++-
include/linux/blkdev.h | 1 +
include/linux/fs.h | 37 +++++++++++++++++++++++++++++++++++--
4 files changed, 66 insertions(+), 6 deletions(-)
diff --git a/block/blk-core.c b/block/blk-core.c
index f23d1b0..74aa201 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1697,7 +1697,8 @@ void init_request_from_bio(struct request *req, struct bio
*bio)
{
req->cmd_type = REQ_TYPE_FS;
- req->cmd_flags |= bio->bi_rw & REQ_COMMON_MASK;
+ /* tmp compat. Allow users to set bi_op or bi_rw */
+ req->cmd_flags |= (bio->bi_rw | bio->bi_op) & REQ_COMMON_MASK;
if (bio->bi_rw & REQ_RAHEAD)
req->cmd_flags |= REQ_FAILFAST_MASK;
@@ -2032,6 +2033,12 @@ blk_qc_t generic_make_request(struct bio *bio)
struct bio_list bio_list_on_stack;
blk_qc_t ret = BLK_QC_T_NONE;
+ /* tmp compat. Allow users to set either one or both.
+ * This will be removed when we have converted
+ * everyone in the next patches.
+ */
+ bio->bi_rw |= bio->bi_op;
+
if (!generic_make_request_checks(bio))
goto out;
@@ -2101,6 +2108,12 @@ EXPORT_SYMBOL(generic_make_request);
*/
blk_qc_t submit_bio(struct bio *bio)
{
+ /* tmp compat. Allow users to set either one or both.
+ * This will be removed when we have converted
+ * everyone in the next patches.
+ */
+ bio->bi_rw |= bio->bi_op;
+
/*
* If it's a regular read/write or a barrier with data attached,
* go through the normal accounting stuff before submission.
@@ -2974,8 +2987,8 @@ EXPORT_SYMBOL_GPL(__blk_end_request_err);
void blk_rq_bio_prep(struct request_queue *q, struct request *rq,
struct bio *bio)
{
- /* Bit 0 (R/W) is identical in rq->cmd_flags and bio->bi_rw */
- rq->cmd_flags |= bio->bi_rw & REQ_WRITE;
+ /* tmp compat. Allow users to set bi_op or bi_rw */
+ rq->cmd_flags |= bio_data_dir(bio);
if (bio_has_data(bio))
rq->nr_phys_segments = bio_phys_segments(q, bio);
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 86a38ea..6e49c91 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -48,9 +48,15 @@ struct bio {
struct block_device *bi_bdev;
unsigned int bi_flags; /* status, command, etc */
int bi_error;
- unsigned long bi_rw; /* bottom bits READ/WRITE,
+ unsigned long bi_rw; /* bottom bits rq_flags_bits
* top bits priority
*/
+ /*
+ * this will be a u8 in the next patches and bi_rw can be shrunk to
+ * a u32. For compat in these transistional patches op is a int here.
+ */
+ int bi_op; /* REQ_OP */
+
struct bvec_iter bi_iter;
@@ -242,6 +248,13 @@ enum rq_flag_bits {
#define REQ_HASHED (1ULL << __REQ_HASHED)
#define REQ_MQ_INFLIGHT (1ULL << __REQ_MQ_INFLIGHT)
+enum req_op {
+ REQ_OP_READ,
+ REQ_OP_WRITE = REQ_WRITE,
+ REQ_OP_DISCARD = REQ_DISCARD,
+ REQ_OP_WRITE_SAME = REQ_WRITE_SAME,
+};
+
typedef unsigned int blk_qc_t;
#define BLK_QC_T_NONE -1U
#define BLK_QC_T_SHIFT 16
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 40c0241..d4d3b06 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -96,6 +96,7 @@ struct request {
struct request_queue *q;
struct blk_mq_ctx *mq_ctx;
+ int op;
u64 cmd_flags;
unsigned cmd_type;
unsigned long atomic_flags;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 3d9fdf4..399b22b 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2434,15 +2434,48 @@ extern void make_bad_inode(struct inode *);
extern bool is_bad_inode(struct inode *);
#ifdef CONFIG_BLOCK
+
+static inline bool op_is_write(int op)
+{
+ switch (op) {
+ case REQ_OP_WRITE:
+ case REQ_OP_WRITE_SAME:
+ case REQ_OP_DISCARD:
+ return true;
+ default:
+ return false;
+ }
+}
+
/*
* return READ, READA, or WRITE
*/
-#define bio_rw(bio) ((bio)->bi_rw & (RW_MASK | RWA_MASK))
+static inline int bio_rw(struct bio *bio)
+{
+ /*
+ * tmp cpmpat. Allow users to set either op or rw, until
+ * all code is converted in the next patches.
+ */
+ if (op_is_write(bio->bi_op))
+ return WRITE;
+
+ return bio->bi_rw & (RW_MASK | RWA_MASK);
+}
/*
* return data direction, READ or WRITE
*/
-#define bio_data_dir(bio) ((bio)->bi_rw & 1)
+static inline int bio_data_dir(struct bio *bio)
+{
+ /*
+ * tmp cpmpat. Allow users to set either op or rw, until
+ * all code is converted in the next patches.
+ */
+ if (op_is_write(bio->bi_op))
+ return WRITE;
+
+ return bio->bi_rw & 1;
+}
extern void check_disk_size_change(struct gendisk *disk,
struct block_device *bdev);
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 03/35] block, fs, mm, drivers: set bi_op to REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch converts the simple bi_rw use cases in the block,
drivers, mm and fs code to use bi_op for a REQ_OP and bi_rw
for rq_flag_bits.
These should be simple one liner cases, so I just did them
in one patch. The next patches handle the more complicated
cases in a module per patch.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
block/bio.c | 8 +++++---
block/blk-flush.c | 1 +
block/blk-lib.c | 7 ++++---
block/blk-map.c | 2 +-
drivers/block/floppy.c | 2 +-
drivers/block/pktcdvd.c | 4 ++--
drivers/lightnvm/rrpc.c | 4 ++--
drivers/scsi/osd/osd_initiator.c | 8 ++++----
fs/exofs/ore.c | 2 +-
fs/ext4/crypto.c | 2 +-
fs/ext4/page-io.c | 8 +++++---
fs/ext4/readpage.c | 2 +-
fs/jfs/jfs_logmgr.c | 2 ++
fs/jfs/jfs_metapage.c | 4 ++--
fs/logfs/dev_bdev.c | 12 ++++++------
fs/nfs/blocklayout/blocklayout.c | 2 +-
mm/page_io.c | 4 ++--
17 files changed, 41 insertions(+), 33 deletions(-)
diff --git a/block/bio.c b/block/bio.c
index 7e4d050..68df2df 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -581,6 +581,7 @@ void __bio_clone_fast(struct bio *bio, struct bio *bio_src)
*/
bio->bi_bdev = bio_src->bi_bdev;
bio_set_flag(bio, BIO_CLONED);
+ bio->bi_op = bio_src->bi_op;
bio->bi_rw = bio_src->bi_rw;
bio->bi_iter = bio_src->bi_iter;
bio->bi_io_vec = bio_src->bi_io_vec;
@@ -663,6 +664,7 @@ struct bio *bio_clone_bioset(struct bio *bio_src, gfp_t
gfp_mask,
return NULL;
bio->bi_bdev = bio_src->bi_bdev;
+ bio->bi_op = bio_src->bi_op;
bio->bi_rw = bio_src->bi_rw;
bio->bi_iter.bi_sector = bio_src->bi_iter.bi_sector;
bio->bi_iter.bi_size = bio_src->bi_iter.bi_size;
@@ -1171,7 +1173,7 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
goto out_bmd;
if (iter->type & WRITE)
- bio->bi_rw |= REQ_WRITE;
+ bio->bi_op = REQ_OP_WRITE;
ret = 0;
@@ -1341,7 +1343,7 @@ struct bio *bio_map_user_iov(struct request_queue *q,
* set data direction, and check if mapped pages need bouncing
*/
if (iter->type & WRITE)
- bio->bi_rw |= REQ_WRITE;
+ bio->bi_op = REQ_OP_WRITE;
bio_set_flag(bio, BIO_USER_MAPPED);
@@ -1534,7 +1536,7 @@ struct bio *bio_copy_kern(struct request_queue *q, void
*data, unsigned int len,
bio->bi_private = data;
} else {
bio->bi_end_io = bio_copy_kern_endio;
- bio->bi_rw |= REQ_WRITE;
+ bio->bi_op = REQ_OP_WRITE;
}
return bio;
diff --git a/block/blk-flush.c b/block/blk-flush.c
index f2fbf9a..b05acca 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -484,6 +484,7 @@ int blkdev_issue_flush(struct block_device *bdev, gfp_t
gfp_mask,
bio = bio_alloc(gfp_mask, 0);
bio->bi_bdev = bdev;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_rw = WRITE_FLUSH;
ret = submit_bio_wait(bio);
diff --git a/block/blk-lib.c b/block/blk-lib.c
index 87e3de4..d01b5f2 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -42,7 +42,7 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t
sector,
{
DECLARE_COMPLETION_ONSTACK(wait);
struct request_queue *q = bdev_get_queue(bdev);
- int type = REQ_WRITE | REQ_DISCARD;
+ int type = 0;
unsigned int granularity;
int alignment;
struct bio_batch bb;
@@ -102,6 +102,7 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t
sector,
bio->bi_end_io = bio_batch_end_io;
bio->bi_bdev = bdev;
bio->bi_private = &bb;
+ bio->bi_op = REQ_OP_DISCARD;
bio->bi_rw = type;
bio->bi_iter.bi_size = req_sects << 9;
@@ -178,7 +179,7 @@ int blkdev_issue_write_same(struct block_device *bdev,
sector_t sector,
bio->bi_io_vec->bv_page = page;
bio->bi_io_vec->bv_offset = 0;
bio->bi_io_vec->bv_len = bdev_logical_block_size(bdev);
- bio->bi_rw = REQ_WRITE | REQ_WRITE_SAME;
+ bio->bi_op = REQ_OP_WRITE_SAME;
if (nr_sects > max_write_same_sectors) {
bio->bi_iter.bi_size = max_write_same_sectors << 9;
@@ -240,7 +241,7 @@ static int __blkdev_issue_zeroout(struct block_device *bdev,
sector_t sector,
bio->bi_bdev = bdev;
bio->bi_end_io = bio_batch_end_io;
bio->bi_private = &bb;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
while (nr_sects != 0) {
sz = min((sector_t) PAGE_SIZE >> 9 , nr_sects);
diff --git a/block/blk-map.c b/block/blk-map.c
index f565e11..9021a8f 100644
--- a/block/blk-map.c
+++ b/block/blk-map.c
@@ -224,7 +224,7 @@ int blk_rq_map_kern(struct request_queue *q, struct request
*rq, void *kbuf,
return PTR_ERR(bio);
if (!reading)
- bio->bi_rw |= REQ_WRITE;
+ bio->bi_op = REQ_OP_WRITE;
if (do_copy)
rq->cmd_flags |= REQ_COPY_USER;
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 73ded25..84b1584 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -3822,7 +3822,7 @@ static int __floppy_read_block_0(struct block_device
*bdev, int drive)
bio.bi_flags |= (1 << BIO_QUIET);
bio.bi_private = &cbdata;
bio.bi_end_io = floppy_rb0_cb;
- bio.bi_rw = READ;
+ bio.bi_op = REQ_OP_READ;
submit_bio(&bio);
process_fd_request();
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index d06c62e..a4ecbd3 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -1074,7 +1074,7 @@ static void pkt_gather_data(struct pktcdvd_device *pd,
struct packet_data *pkt)
BUG();
atomic_inc(&pkt->io_wait);
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
pkt_queue_bio(pd, bio);
frames_read++;
}
@@ -1336,7 +1336,7 @@ static void pkt_start_write(struct pktcdvd_device *pd,
struct packet_data *pkt)
/* Start the write request */
atomic_set(&pkt->io_wait, 1);
- pkt->w_bio->bi_rw = WRITE;
+ pkt->w_bio->bi_op = REQ_OP_WRITE;
pkt_queue_bio(pd, pkt->w_bio);
}
diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c
index 307db1e..c509477 100644
--- a/drivers/lightnvm/rrpc.c
+++ b/drivers/lightnvm/rrpc.c
@@ -332,7 +332,7 @@ try:
/* Perform read to do GC */
bio->bi_iter.bi_sector = rrpc_get_sector(rev->addr);
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
bio->bi_private = &wait;
bio->bi_end_io = rrpc_end_sync_bio;
@@ -354,7 +354,7 @@ try:
reinit_completion(&wait);
bio->bi_iter.bi_sector = rrpc_get_sector(rev->addr);
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_private = &wait;
bio->bi_end_io = rrpc_end_sync_bio;
diff --git a/drivers/scsi/osd/osd_initiator.c b/drivers/scsi/osd/osd_initiator.c
index d8a2b51..4e7b440 100644
--- a/drivers/scsi/osd/osd_initiator.c
+++ b/drivers/scsi/osd/osd_initiator.c
@@ -726,7 +726,7 @@ static int _osd_req_list_objects(struct osd_request *or,
return PTR_ERR(bio);
}
- bio->bi_rw &= ~REQ_WRITE;
+ bio->bi_op = REQ_OP_READ;
or->in.bio = bio;
or->in.total_bytes = bio->bi_iter.bi_size;
return 0;
@@ -839,7 +839,7 @@ int osd_req_write_kern(struct osd_request *or,
if (IS_ERR(bio))
return PTR_ERR(bio);
- bio->bi_rw |= REQ_WRITE; /* FIXME: bio_set_dir() */
+ bio->bi_op = REQ_OP_WRITE;
osd_req_write(or, obj, offset, bio, len);
return 0;
}
@@ -956,7 +956,7 @@ static int _osd_req_finalize_cdb_cont(struct osd_request
*or, const u8 *cap_key)
if (IS_ERR(bio))
return PTR_ERR(bio);
- bio->bi_rw |= REQ_WRITE;
+ bio->bi_op = REQ_OP_WRITE;
/* integrity check the continuation before the bio is linked
* with the other data segments since the continuation
@@ -1077,7 +1077,7 @@ int osd_req_write_sg_kern(struct osd_request *or,
if (IS_ERR(bio))
return PTR_ERR(bio);
- bio->bi_rw |= REQ_WRITE;
+ bio->bi_op = REQ_OP_WRITE;
osd_req_write_sg(or, obj, bio, sglist, numentries);
return 0;
diff --git a/fs/exofs/ore.c b/fs/exofs/ore.c
index 7bd8ac8..c40ed74 100644
--- a/fs/exofs/ore.c
+++ b/fs/exofs/ore.c
@@ -878,7 +878,7 @@ static int _write_mirror(struct ore_io_state *ios, int
cur_comp)
} else {
bio = master_dev->bio;
/* FIXME: bio_set_dir() */
- bio->bi_rw |= REQ_WRITE;
+ bio->bi_op = REQ_OP_WRITE;
}
osd_req_write(or, _ios_obj(ios, cur_comp),
diff --git a/fs/ext4/crypto.c b/fs/ext4/crypto.c
index 18b8893..1d4ab0c 100644
--- a/fs/ext4/crypto.c
+++ b/fs/ext4/crypto.c
@@ -422,7 +422,7 @@ int ext4_encrypted_zeroout(struct inode *inode, ext4_lblk_t
lblk,
bio->bi_bdev = inode->i_sb->s_bdev;
bio->bi_iter.bi_sector pblk <<
(inode->i_sb->s_blocksize_bits - 9);
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
ret = bio_add_page(bio, ciphertext_page,
inode->i_sb->s_blocksize, 0);
if (ret != inode->i_sb->s_blocksize) {
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index cf63ac3..046863c 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -353,10 +353,12 @@ void ext4_io_submit(struct ext4_io_submit *io)
struct bio *bio = io->io_bio;
if (bio) {
- int io_op = io->io_wbc->sync_mode == WB_SYNC_ALL ?
- WRITE_SYNC : WRITE;
+ int io_op_flags = io->io_wbc->sync_mode == WB_SYNC_ALL ?
+ WRITE_SYNC : 0;
+
bio_get(io->io_bio);
- io->io_bio->bi_rw = io_op;
+ io->io_bio->bi_op = REQ_OP_WRITE;
+ io->io_bio->bi_rw = io_op_flags;
submit_bio(io->io_bio);
bio_put(io->io_bio);
}
diff --git a/fs/ext4/readpage.c b/fs/ext4/readpage.c
index 893dc15..fb36434 100644
--- a/fs/ext4/readpage.c
+++ b/fs/ext4/readpage.c
@@ -294,7 +294,7 @@ int ext4_mpage_readpages(struct address_space *mapping,
bio->bi_iter.bi_sector = blocks[0] << (blkbits - 9);
bio->bi_end_io = mpage_end_io;
bio->bi_private = ctx;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
}
length = first_hole << blkbits;
diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c
index b0e068f..00227f8 100644
--- a/fs/jfs/jfs_logmgr.c
+++ b/fs/jfs/jfs_logmgr.c
@@ -2004,6 +2004,7 @@ static int lbmRead(struct jfs_log * log, int pn, struct
lbuf ** bpp)
bio->bi_end_io = lbmIODone;
bio->bi_private = bp;
+ bio->bi_op = REQ_OP_READ;
bio->bi_rw = READ_SYNC;
/*check if journaling to disk has been disabled*/
if (log->no_integrity) {
@@ -2148,6 +2149,7 @@ static void lbmStartIO(struct lbuf * bp)
bio->bi_end_io = lbmIODone;
bio->bi_private = bp;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_rw = WRITE_SYNC;
/* check if journaling to disk has been disabled */
diff --git a/fs/jfs/jfs_metapage.c b/fs/jfs/jfs_metapage.c
index bc29972..115d99e 100644
--- a/fs/jfs/jfs_metapage.c
+++ b/fs/jfs/jfs_metapage.c
@@ -434,7 +434,7 @@ static int metapage_writepage(struct page *page, struct
writeback_control *wbc)
bio->bi_iter.bi_sector = pblock << (inode->i_blkbits - 9);
bio->bi_end_io = metapage_write_end_io;
bio->bi_private = page;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
/* Don't call bio_add_page yet, we may add to this vec */
bio_offset = offset;
@@ -515,7 +515,7 @@ static int metapage_readpage(struct file *fp, struct page
*page)
pblock << (inode->i_blkbits - 9);
bio->bi_end_io = metapage_read_end_io;
bio->bi_private = page;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
len = xlen << inode->i_blkbits;
offset = block_offset << inode->i_blkbits;
if (bio_add_page(bio, page, len, offset) < len)
diff --git a/fs/logfs/dev_bdev.c b/fs/logfs/dev_bdev.c
index 9e690ad..130b7e2 100644
--- a/fs/logfs/dev_bdev.c
+++ b/fs/logfs/dev_bdev.c
@@ -14,7 +14,7 @@
#define PAGE_OFS(ofs) ((ofs) & (PAGE_SIZE-1))
-static int sync_request(struct page *page, struct block_device *bdev, int rw)
+static int sync_request(struct page *page, struct block_device *bdev, int op)
{
struct bio bio;
struct bio_vec bio_vec;
@@ -29,7 +29,7 @@ static int sync_request(struct page *page, struct block_device
*bdev, int rw)
bio.bi_bdev = bdev;
bio.bi_iter.bi_sector = page->index * (PAGE_SIZE >> 9);
bio.bi_iter.bi_size = PAGE_SIZE;
- bio.bi_rw = rw;
+ bio.bi_op = op;
return submit_bio_wait(&bio);
}
@@ -96,7 +96,7 @@ static int __bdev_writeseg(struct super_block *sb, u64 ofs,
pgoff_t index,
bio->bi_iter.bi_sector = ofs >> 9;
bio->bi_private = sb;
bio->bi_end_io = writeseg_end_io;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
atomic_inc(&super->s_pending_writes);
submit_bio(bio);
@@ -124,7 +124,7 @@ static int __bdev_writeseg(struct super_block *sb, u64 ofs,
pgoff_t index,
bio->bi_iter.bi_sector = ofs >> 9;
bio->bi_private = sb;
bio->bi_end_io = writeseg_end_io;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
atomic_inc(&super->s_pending_writes);
submit_bio(bio);
return 0;
@@ -188,7 +188,7 @@ static int do_erase(struct super_block *sb, u64 ofs, pgoff_t
index,
bio->bi_iter.bi_sector = ofs >> 9;
bio->bi_private = sb;
bio->bi_end_io = erase_end_io;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
atomic_inc(&super->s_pending_writes);
submit_bio(bio);
@@ -210,7 +210,7 @@ static int do_erase(struct super_block *sb, u64 ofs, pgoff_t
index,
bio->bi_iter.bi_sector = ofs >> 9;
bio->bi_private = sb;
bio->bi_end_io = erase_end_io;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
atomic_inc(&super->s_pending_writes);
submit_bio(bio);
return 0;
diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c
index 8c0443c..3832909 100644
--- a/fs/nfs/blocklayout/blocklayout.c
+++ b/fs/nfs/blocklayout/blocklayout.c
@@ -175,7 +175,7 @@ retry:
disk_addr >> SECTOR_SHIFT, end_io, par);
if (!bio)
return ERR_PTR(-ENOMEM);
- bio->bi_rw = rw;
+ bio->bi_op = rw;
}
if (bio_add_page(bio, page, *len, offset) < *len) {
bio = bl_submit_bio(bio);
diff --git a/mm/page_io.c b/mm/page_io.c
index e8a18a7..e48b84c 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -311,7 +311,7 @@ int __swap_writepage(struct page *page, struct
writeback_control *wbc,
ret = -ENOMEM;
goto out;
}
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
if (wbc->sync_mode == WB_SYNC_ALL)
bio->bi_rw |= REQ_SYNC;
count_vm_event(PSWPOUT);
@@ -359,7 +359,7 @@ int swap_readpage(struct page *page)
ret = -ENOMEM;
goto out;
}
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
count_vm_event(PSWPIN);
submit_bio(bio);
out:
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 04/35] fs: have submit_bh users pass in op and flags separately
From: Mike Christie <mchristi at redhat.com>
This has submit_bh users pass in the operation and flags separately,
so we can setup the bio->bi_op and bio-bi_rw flags.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
drivers/md/bitmap.c | 4 ++--
fs/btrfs/check-integrity.c | 24 ++++++++++----------
fs/btrfs/check-integrity.h | 2 +-
fs/btrfs/disk-io.c | 4 ++--
fs/buffer.c | 54 +++++++++++++++++++++++----------------------
fs/ext4/balloc.c | 2 +-
fs/ext4/ialloc.c | 2 +-
fs/ext4/inode.c | 2 +-
fs/ext4/mmp.c | 4 ++--
fs/fat/misc.c | 2 +-
fs/gfs2/bmap.c | 2 +-
fs/gfs2/dir.c | 2 +-
fs/gfs2/meta_io.c | 6 ++---
fs/jbd2/commit.c | 6 ++---
fs/jbd2/journal.c | 8 +++----
fs/nilfs2/btnode.c | 6 ++---
fs/nilfs2/btnode.h | 2 +-
fs/nilfs2/btree.c | 6 +++--
fs/nilfs2/gcinode.c | 5 +++--
fs/nilfs2/mdt.c | 11 ++++-----
fs/ntfs/aops.c | 6 ++---
fs/ntfs/compress.c | 2 +-
fs/ntfs/file.c | 2 +-
fs/ntfs/logfile.c | 2 +-
fs/ntfs/mft.c | 4 ++--
fs/ocfs2/buffer_head_io.c | 8 +++----
fs/reiserfs/inode.c | 4 ++--
fs/reiserfs/journal.c | 6 ++---
fs/ufs/util.c | 2 +-
include/linux/buffer_head.h | 9 ++++----
30 files changed, 103 insertions(+), 96 deletions(-)
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index d80cce4..c8e4124 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -295,7 +295,7 @@ static void write_page(struct bitmap *bitmap, struct page
*page, int wait)
atomic_inc(&bitmap->pending_writes);
set_buffer_locked(bh);
set_buffer_mapped(bh);
- submit_bh(WRITE | REQ_SYNC, bh);
+ submit_bh(REQ_OP_WRITE, REQ_SYNC, bh);
bh = bh->b_this_page;
}
@@ -390,7 +390,7 @@ static int read_page(struct file *file, unsigned long index,
atomic_inc(&bitmap->pending_writes);
set_buffer_locked(bh);
set_buffer_mapped(bh);
- submit_bh(READ, bh);
+ submit_bh(REQ_OP_READ, 0, bh);
}
block++;
bh = bh->b_this_page;
diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c
index 9c51373..1c3c40a 100644
--- a/fs/btrfs/check-integrity.c
+++ b/fs/btrfs/check-integrity.c
@@ -2854,12 +2854,12 @@ static struct btrfsic_dev_state
*btrfsic_dev_state_lookup(
return ds;
}
-int btrfsic_submit_bh(int rw, struct buffer_head *bh)
+int btrfsic_submit_bh(int op, int op_flags, struct buffer_head *bh)
{
struct btrfsic_dev_state *dev_state;
if (!btrfsic_is_initialized)
- return submit_bh(rw, bh);
+ return submit_bh(op, op_flags, bh);
mutex_lock(&btrfsic_mutex);
/* since btrfsic_submit_bh() might also be called before
@@ -2868,26 +2868,26 @@ int btrfsic_submit_bh(int rw, struct buffer_head *bh)
/* Only called to write the superblock (incl. FLUSH/FUA) */
if (NULL != dev_state &&
- (rw & WRITE) && bh->b_size > 0) {
+ (op == REQ_OP_WRITE) && bh->b_size > 0) {
u64 dev_bytenr;
dev_bytenr = 4096 * bh->b_blocknr;
if (dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
printk(KERN_INFO
- "submit_bh(rw=0x%x, blocknr=%llu (bytenr %llu),"
- " size=%zu, data=%p, bdev=%p)\n",
- rw, (unsigned long long)bh->b_blocknr,
+ "submit_bh(op=0x%x,0x%x, blocknr=%llu "
+ "(bytenr %llu), size=%zu, data=%p, bdev=%p)\n",
+ op, op_flags, (unsigned long long)bh->b_blocknr,
dev_bytenr, bh->b_size, bh->b_data, bh->b_bdev);
btrfsic_process_written_block(dev_state, dev_bytenr,
&bh->b_data, 1, NULL,
- NULL, bh, rw);
- } else if (NULL != dev_state && (rw & REQ_FLUSH)) {
+ NULL, bh, op_flags);
+ } else if (NULL != dev_state && (op_flags & REQ_FLUSH)) {
if (dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
printk(KERN_INFO
- "submit_bh(rw=0x%x FLUSH, bdev=%p)\n",
- rw, bh->b_bdev);
+ "submit_bh(op=0x%x,0x%x FLUSH, bdev=%p)\n",
+ op, op_flags, bh->b_bdev);
if (!dev_state->dummy_block_for_bio_bh_flush.is_iodone) {
if ((dev_state->state->print_mask &
(BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH |
@@ -2905,7 +2905,7 @@ int btrfsic_submit_bh(int rw, struct buffer_head *bh)
block->never_written = 0;
block->iodone_w_error = 0;
block->flush_gen = dev_state->last_flush_gen + 1;
- block->submit_bio_bh_rw = rw;
+ block->submit_bio_bh_rw = op_flags;
block->orig_bio_bh_private = bh->b_private;
block->orig_bio_bh_end_io.bh = bh->b_end_io;
block->next_in_same_bio = NULL;
@@ -2914,7 +2914,7 @@ int btrfsic_submit_bh(int rw, struct buffer_head *bh)
}
}
mutex_unlock(&btrfsic_mutex);
- return submit_bh(rw, bh);
+ return submit_bh(op, op_flags, bh);
}
static void __btrfsic_submit_bio(struct bio *bio)
diff --git a/fs/btrfs/check-integrity.h b/fs/btrfs/check-integrity.h
index c04e249..f78dff1 100644
--- a/fs/btrfs/check-integrity.h
+++ b/fs/btrfs/check-integrity.h
@@ -20,7 +20,7 @@
#define __BTRFS_CHECK_INTEGRITY__
#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
-int btrfsic_submit_bh(int rw, struct buffer_head *bh);
+int btrfsic_submit_bh(int op, int op_flags, struct buffer_head *bh);
void btrfsic_submit_bio(struct bio *bio);
int btrfsic_submit_bio_wait(struct bio *bio);
#else
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 3437390..bb23db7 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3404,9 +3404,9 @@ static int write_dev_supers(struct btrfs_device *device,
* to go down lazy.
*/
if (i == 0)
- ret = btrfsic_submit_bh(WRITE_FUA, bh);
+ ret = btrfsic_submit_bh(REQ_OP_WRITE, WRITE_FUA, bh);
else
- ret = btrfsic_submit_bh(WRITE_SYNC, bh);
+ ret = btrfsic_submit_bh(REQ_OP_WRITE, WRITE_SYNC, bh);
if (ret)
errors++;
}
diff --git a/fs/buffer.c b/fs/buffer.c
index ef70d65..3492de4 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -45,7 +45,7 @@
#include <trace/events/block.h>
static int fsync_buffers_list(spinlock_t *lock, struct list_head *list);
-static int submit_bh_wbc(int rw, struct buffer_head *bh,
+static int submit_bh_wbc(int op, int op_flags, struct buffer_head *bh,
unsigned long bio_flags,
struct writeback_control *wbc);
@@ -1225,7 +1225,7 @@ static struct buffer_head *__bread_slow(struct buffer_head
*bh)
} else {
get_bh(bh);
bh->b_end_io = end_buffer_read_sync;
- submit_bh(READ, bh);
+ submit_bh(REQ_OP_READ, 0, bh);
wait_on_buffer(bh);
if (buffer_uptodate(bh))
return bh;
@@ -1697,7 +1697,7 @@ static int __block_write_full_page(struct inode *inode,
struct page *page,
struct buffer_head *bh, *head;
unsigned int blocksize, bbits;
int nr_underway = 0;
- int write_op = (wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : WRITE);
+ int write_flags = (wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : 0);
head = create_page_buffers(page, inode,
(1 << BH_Dirty)|(1 << BH_Uptodate));
@@ -1786,7 +1786,7 @@ static int __block_write_full_page(struct inode *inode,
struct page *page,
do {
struct buffer_head *next = bh->b_this_page;
if (buffer_async_write(bh)) {
- submit_bh_wbc(write_op, bh, 0, wbc);
+ submit_bh_wbc(REQ_OP_WRITE, write_flags, bh, 0, wbc);
nr_underway++;
}
bh = next;
@@ -1840,7 +1840,7 @@ recover:
struct buffer_head *next = bh->b_this_page;
if (buffer_async_write(bh)) {
clear_buffer_dirty(bh);
- submit_bh_wbc(write_op, bh, 0, wbc);
+ submit_bh_wbc(REQ_OP_WRITE, write_flags, bh, 0, wbc);
nr_underway++;
}
bh = next;
@@ -2248,7 +2248,7 @@ int block_read_full_page(struct page *page, get_block_t
*get_block)
if (buffer_uptodate(bh))
end_buffer_async_read(bh, 1);
else
- submit_bh(READ, bh);
+ submit_bh(REQ_OP_READ, 0, bh);
}
return 0;
}
@@ -2582,7 +2582,7 @@ int nobh_write_begin(struct address_space *mapping,
if (block_start < from || block_end > to) {
lock_buffer(bh);
bh->b_end_io = end_buffer_read_nobh;
- submit_bh(READ, bh);
+ submit_bh(REQ_OP_READ, 0, bh);
nr_reads++;
}
}
@@ -2949,7 +2949,7 @@ static void end_bio_bh_io_sync(struct bio *bio)
* errors, this only handles the "we need to be able to
* do IO at the final sector" case.
*/
-void guard_bio_eod(int rw, struct bio *bio)
+void guard_bio_eod(int op, struct bio *bio)
{
sector_t maxsector;
struct bio_vec *bvec = &bio->bi_io_vec[bio->bi_vcnt - 1];
@@ -2979,13 +2979,13 @@ void guard_bio_eod(int rw, struct bio *bio)
bvec->bv_len -= truncated_bytes;
/* ..and clear the end of the buffer for reads */
- if ((rw & RW_MASK) == READ) {
+ if (op == REQ_OP_READ) {
zero_user(bvec->bv_page, bvec->bv_offset + bvec->bv_len,
truncated_bytes);
}
}
-static int submit_bh_wbc(int rw, struct buffer_head *bh,
+static int submit_bh_wbc(int op, int op_flags, struct buffer_head *bh,
unsigned long bio_flags, struct writeback_control *wbc)
{
struct bio *bio;
@@ -2999,7 +2999,7 @@ static int submit_bh_wbc(int rw, struct buffer_head *bh,
/*
* Only clear out a write error when rewriting
*/
- if (test_set_buffer_req(bh) && (rw & WRITE))
+ if (test_set_buffer_req(bh) && (op == REQ_OP_WRITE))
clear_buffer_write_io_error(bh);
/*
@@ -3022,29 +3022,31 @@ static int submit_bh_wbc(int rw, struct buffer_head *bh,
bio->bi_end_io = end_bio_bh_io_sync;
bio->bi_private = bh;
bio->bi_flags |= bio_flags;
+ bio->bi_op = op;
/* Take care of bh's that straddle the end of the device */
- guard_bio_eod(rw, bio);
+ guard_bio_eod(op, bio);
if (buffer_meta(bh))
- rw |= REQ_META;
+ op_flags |= REQ_META;
if (buffer_prio(bh))
- rw |= REQ_PRIO;
- bio->bi_rw = rw;
+ op_flags |= REQ_PRIO;
+ bio->bi_rw = op_flags;
submit_bio(bio);
return 0;
}
-int _submit_bh(int rw, struct buffer_head *bh, unsigned long bio_flags)
+int _submit_bh(int op, int op_flags, struct buffer_head *bh,
+ unsigned long bio_flags)
{
- return submit_bh_wbc(rw, bh, bio_flags, NULL);
+ return submit_bh_wbc(op, op_flags, bh, bio_flags, NULL);
}
EXPORT_SYMBOL_GPL(_submit_bh);
-int submit_bh(int rw, struct buffer_head *bh)
+int submit_bh(int op, int op_flags, struct buffer_head *bh)
{
- return submit_bh_wbc(rw, bh, 0, NULL);
+ return submit_bh_wbc(op, op_flags, bh, 0, NULL);
}
EXPORT_SYMBOL(submit_bh);
@@ -3086,14 +3088,14 @@ void ll_rw_block(int rw, int nr, struct buffer_head
*bhs[])
if (test_clear_buffer_dirty(bh)) {
bh->b_end_io = end_buffer_write_sync;
get_bh(bh);
- submit_bh(WRITE, bh);
+ submit_bh(rw, 0, bh);
continue;
}
} else {
if (!buffer_uptodate(bh)) {
bh->b_end_io = end_buffer_read_sync;
get_bh(bh);
- submit_bh(rw, bh);
+ submit_bh(rw, 0, bh);
continue;
}
}
@@ -3102,7 +3104,7 @@ void ll_rw_block(int rw, int nr, struct buffer_head
*bhs[])
}
EXPORT_SYMBOL(ll_rw_block);
-void write_dirty_buffer(struct buffer_head *bh, int rw)
+void write_dirty_buffer(struct buffer_head *bh, int op_flags)
{
lock_buffer(bh);
if (!test_clear_buffer_dirty(bh)) {
@@ -3111,7 +3113,7 @@ void write_dirty_buffer(struct buffer_head *bh, int rw)
}
bh->b_end_io = end_buffer_write_sync;
get_bh(bh);
- submit_bh(rw, bh);
+ submit_bh(REQ_OP_WRITE, op_flags, bh);
}
EXPORT_SYMBOL(write_dirty_buffer);
@@ -3120,7 +3122,7 @@ EXPORT_SYMBOL(write_dirty_buffer);
* and then start new I/O and then wait upon it. The caller must have a ref on
* the buffer_head.
*/
-int __sync_dirty_buffer(struct buffer_head *bh, int rw)
+int __sync_dirty_buffer(struct buffer_head *bh, int op_flags)
{
int ret = 0;
@@ -3129,7 +3131,7 @@ int __sync_dirty_buffer(struct buffer_head *bh, int rw)
if (test_clear_buffer_dirty(bh)) {
get_bh(bh);
bh->b_end_io = end_buffer_write_sync;
- ret = submit_bh(rw, bh);
+ ret = submit_bh(REQ_OP_WRITE, op_flags, bh);
wait_on_buffer(bh);
if (!ret && !buffer_uptodate(bh))
ret = -EIO;
@@ -3392,7 +3394,7 @@ int bh_submit_read(struct buffer_head *bh)
get_bh(bh);
bh->b_end_io = end_buffer_read_sync;
- submit_bh(READ, bh);
+ submit_bh(REQ_OP_READ, 0, bh);
wait_on_buffer(bh);
if (buffer_uptodate(bh))
return 0;
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index fe1f50f..d06823b 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -470,7 +470,7 @@ ext4_read_block_bitmap_nowait(struct super_block *sb,
ext4_group_t block_group)
trace_ext4_read_block_bitmap_load(sb, block_group);
bh->b_end_io = ext4_end_bitmap_read;
get_bh(bh);
- submit_bh(READ | REQ_META | REQ_PRIO, bh);
+ submit_bh(REQ_OP_READ, REQ_META | REQ_PRIO, bh);
return bh;
verify:
err = ext4_validate_block_bitmap(sb, desc, block_group, bh);
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index aa509fd..25c9672 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -214,7 +214,7 @@ ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t
block_group)
trace_ext4_load_inode_bitmap(sb, block_group);
bh->b_end_io = ext4_end_bitmap_read;
get_bh(bh);
- submit_bh(READ | REQ_META | REQ_PRIO, bh);
+ submit_bh(REQ_OP_READ, REQ_META | REQ_PRIO, bh);
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
put_bh(bh);
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index b878614..8a91e98 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4124,7 +4124,7 @@ make_io:
trace_ext4_load_inode(inode);
get_bh(bh);
bh->b_end_io = end_buffer_read_sync;
- submit_bh(READ | REQ_META | REQ_PRIO, bh);
+ submit_bh(REQ_OP_READ, REQ_META | REQ_PRIO, bh);
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
EXT4_ERROR_INODE_BLOCK(inode, block,
diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c
index 0a512aa..bd90abf 100644
--- a/fs/ext4/mmp.c
+++ b/fs/ext4/mmp.c
@@ -52,7 +52,7 @@ static int write_mmp_block(struct super_block *sb, struct
buffer_head *bh)
lock_buffer(bh);
bh->b_end_io = end_buffer_write_sync;
get_bh(bh);
- submit_bh(WRITE_SYNC | REQ_META | REQ_PRIO, bh);
+ submit_bh(REQ_OP_WRITE, WRITE_SYNC | REQ_META | REQ_PRIO, bh);
wait_on_buffer(bh);
sb_end_write(sb);
if (unlikely(!buffer_uptodate(bh)))
@@ -88,7 +88,7 @@ static int read_mmp_block(struct super_block *sb, struct
buffer_head **bh,
get_bh(*bh);
lock_buffer(*bh);
(*bh)->b_end_io = end_buffer_read_sync;
- submit_bh(READ_SYNC | REQ_META | REQ_PRIO, *bh);
+ submit_bh(REQ_OP_READ, READ_SYNC | REQ_META | REQ_PRIO, *bh);
wait_on_buffer(*bh);
if (!buffer_uptodate(*bh)) {
brelse(*bh);
diff --git a/fs/fat/misc.c b/fs/fat/misc.c
index c4589e9..8a86981 100644
--- a/fs/fat/misc.c
+++ b/fs/fat/misc.c
@@ -267,7 +267,7 @@ int fat_sync_bhs(struct buffer_head **bhs, int nr_bhs)
int i, err = 0;
for (i = 0; i < nr_bhs; i++)
- write_dirty_buffer(bhs[i], WRITE);
+ write_dirty_buffer(bhs[i], 0);
for (i = 0; i < nr_bhs; i++) {
wait_on_buffer(bhs[i]);
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 0860f0b..29faf72 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -285,7 +285,7 @@ static void gfs2_metapath_ra(struct gfs2_glock *gl,
if (trylock_buffer(rabh)) {
if (!buffer_uptodate(rabh)) {
rabh->b_end_io = end_buffer_read_sync;
- submit_bh(READA | REQ_META, rabh);
+ submit_bh(REQ_OP_READ, READA | REQ_META, rabh);
continue;
}
unlock_buffer(rabh);
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index d4014af..a87dae0 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -1510,7 +1510,7 @@ static void gfs2_dir_readahead(struct inode *inode,
unsigned hsize, u32 index,
continue;
}
bh->b_end_io = end_buffer_read_sync;
- submit_bh(READA | REQ_META, bh);
+ submit_bh(REQ_OP_READ, READA | REQ_META, bh);
continue;
}
brelse(bh);
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index 87a3abc..dc1c9db 100644
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -37,8 +37,8 @@ static int gfs2_aspace_writepage(struct page *page, struct
writeback_control *wb
{
struct buffer_head *bh, *head;
int nr_underway = 0;
- int write_op = REQ_META | REQ_PRIO |
- (wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : WRITE);
+ int write_flags = REQ_META | REQ_PRIO |
+ (wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : 0);
BUG_ON(!PageLocked(page));
BUG_ON(!page_has_buffers(page));
@@ -79,7 +79,7 @@ static int gfs2_aspace_writepage(struct page *page, struct
writeback_control *wb
do {
struct buffer_head *next = bh->b_this_page;
if (buffer_async_write(bh)) {
- submit_bh(write_op, bh);
+ submit_bh(REQ_OP_WRITE, write_flags, bh);
nr_underway++;
}
bh = next;
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index 517f2de..2690969 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -155,9 +155,9 @@ static int journal_submit_commit_record(journal_t *journal,
if (journal->j_flags & JBD2_BARRIER &&
!jbd2_has_feature_async_commit(journal))
- ret = submit_bh(WRITE_SYNC | WRITE_FLUSH_FUA, bh);
+ ret = submit_bh(REQ_OP_WRITE, WRITE_SYNC | WRITE_FLUSH_FUA, bh);
else
- ret = submit_bh(WRITE_SYNC, bh);
+ ret = submit_bh(REQ_OP_WRITE, WRITE_SYNC, bh);
*cbh = bh;
return ret;
@@ -714,7 +714,7 @@ start_journal_io:
clear_buffer_dirty(bh);
set_buffer_uptodate(bh);
bh->b_end_io = journal_end_buffer_io_sync;
- submit_bh(WRITE_SYNC, bh);
+ submit_bh(REQ_OP_WRITE, WRITE_SYNC, bh);
}
cond_resched();
stats.run.rs_blocks_logged += bufs;
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 7bf1683..a3e1776 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1345,15 +1345,15 @@ static int journal_reset(journal_t *journal)
return jbd2_journal_start_thread(journal);
}
-static int jbd2_write_superblock(journal_t *journal, int write_op)
+static int jbd2_write_superblock(journal_t *journal, int write_flags)
{
struct buffer_head *bh = journal->j_sb_buffer;
journal_superblock_t *sb = journal->j_superblock;
int ret;
- trace_jbd2_write_superblock(journal, write_op);
+ trace_jbd2_write_superblock(journal, write_flags);
if (!(journal->j_flags & JBD2_BARRIER))
- write_op &= ~(REQ_FUA | REQ_FLUSH);
+ write_flags &= ~(REQ_FUA | REQ_FLUSH);
lock_buffer(bh);
if (buffer_write_io_error(bh)) {
/*
@@ -1373,7 +1373,7 @@ static int jbd2_write_superblock(journal_t *journal, int
write_op)
jbd2_superblock_csum_set(journal, sb);
get_bh(bh);
bh->b_end_io = end_buffer_write_sync;
- ret = submit_bh(write_op, bh);
+ ret = submit_bh(REQ_OP_WRITE, write_flags, bh);
wait_on_buffer(bh);
if (buffer_write_io_error(bh)) {
clear_buffer_write_io_error(bh);
diff --git a/fs/nilfs2/btnode.c b/fs/nilfs2/btnode.c
index a35ae35..07fe874 100644
--- a/fs/nilfs2/btnode.c
+++ b/fs/nilfs2/btnode.c
@@ -67,7 +67,7 @@ nilfs_btnode_create_block(struct address_space *btnc, __u64
blocknr)
}
int nilfs_btnode_submit_block(struct address_space *btnc, __u64 blocknr,
- sector_t pblocknr, int mode,
+ sector_t pblocknr, int mode, int mode_flags,
struct buffer_head **pbh, sector_t *submit_ptr)
{
struct buffer_head *bh;
@@ -100,7 +100,7 @@ int nilfs_btnode_submit_block(struct address_space *btnc,
__u64 blocknr,
}
}
- if (mode == READA) {
+ if (mode_flags & REQ_RAHEAD) {
if (pblocknr != *submit_ptr + 1 || !trylock_buffer(bh)) {
err = -EBUSY; /* internal code */
brelse(bh);
@@ -119,7 +119,7 @@ int nilfs_btnode_submit_block(struct address_space *btnc,
__u64 blocknr,
bh->b_blocknr = pblocknr; /* set block address for read */
bh->b_end_io = end_buffer_read_sync;
get_bh(bh);
- submit_bh(mode, bh);
+ submit_bh(mode, mode_flags, bh);
bh->b_blocknr = blocknr; /* set back to the given block address */
*submit_ptr = pblocknr;
err = 0;
diff --git a/fs/nilfs2/btnode.h b/fs/nilfs2/btnode.h
index d876b56..3f93197 100644
--- a/fs/nilfs2/btnode.h
+++ b/fs/nilfs2/btnode.h
@@ -47,7 +47,7 @@ void nilfs_btnode_cache_clear(struct address_space *);
struct buffer_head *nilfs_btnode_create_block(struct address_space *btnc,
__u64 blocknr);
int nilfs_btnode_submit_block(struct address_space *, __u64, sector_t, int,
- struct buffer_head **, sector_t *);
+ int, struct buffer_head **, sector_t *);
void nilfs_btnode_delete(struct buffer_head *);
int nilfs_btnode_prepare_change_key(struct address_space *,
struct nilfs_btnode_chkey_ctxt *);
diff --git a/fs/nilfs2/btree.c b/fs/nilfs2/btree.c
index 3a3821b..5d6a2c6 100644
--- a/fs/nilfs2/btree.c
+++ b/fs/nilfs2/btree.c
@@ -480,7 +480,8 @@ static int __nilfs_btree_get_block(const struct nilfs_bmap
*btree, __u64 ptr,
sector_t submit_ptr = 0;
int ret;
- ret = nilfs_btnode_submit_block(btnc, ptr, 0, READ, &bh, &submit_ptr);
+ ret = nilfs_btnode_submit_block(btnc, ptr, 0, REQ_OP_READ, 0, &bh,
+ &submit_ptr);
if (ret) {
if (ret != -EEXIST)
return ret;
@@ -496,7 +497,8 @@ static int __nilfs_btree_get_block(const struct nilfs_bmap
*btree, __u64 ptr,
n > 0 && i < ra->ncmax; n--, i++) {
ptr2 = nilfs_btree_node_get_ptr(ra->node, i, ra->ncmax);
- ret = nilfs_btnode_submit_block(btnc, ptr2, 0, READA,
+ ret = nilfs_btnode_submit_block(btnc, ptr2, 0,
+ REQ_OP_READ, REQ_RAHEAD,
&ra_bh, &submit_ptr);
if (likely(!ret || ret == -EEXIST))
brelse(ra_bh);
diff --git a/fs/nilfs2/gcinode.c b/fs/nilfs2/gcinode.c
index 748ca23..1f18ffc 100644
--- a/fs/nilfs2/gcinode.c
+++ b/fs/nilfs2/gcinode.c
@@ -106,7 +106,7 @@ int nilfs_gccache_submit_read_data(struct inode *inode,
sector_t blkoff,
bh->b_blocknr = pbn;
bh->b_end_io = end_buffer_read_sync;
get_bh(bh);
- submit_bh(READ, bh);
+ submit_bh(REQ_OP_READ, 0, bh);
if (vbn)
bh->b_blocknr = vbn;
out:
@@ -143,7 +143,8 @@ int nilfs_gccache_submit_read_node(struct inode *inode,
sector_t pbn,
int ret;
ret = nilfs_btnode_submit_block(&NILFS_I(inode)->i_btnode_cache,
- vbn ? : pbn, pbn, READ, out_bh, &pbn);
+ vbn ? : pbn, pbn, REQ_OP_READ, 0,
+ out_bh, &pbn);
if (ret == -EEXIST) /* internal code (cache hit) */
ret = 0;
return ret;
diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c
index 1125f40..92e627d 100644
--- a/fs/nilfs2/mdt.c
+++ b/fs/nilfs2/mdt.c
@@ -124,7 +124,7 @@ static int nilfs_mdt_create_block(struct inode *inode,
unsigned long block,
static int
nilfs_mdt_submit_block(struct inode *inode, unsigned long blkoff,
- int mode, struct buffer_head **out_bh)
+ int mode, int mode_flags, struct buffer_head **out_bh)
{
struct buffer_head *bh;
__u64 blknum = 0;
@@ -138,7 +138,7 @@ nilfs_mdt_submit_block(struct inode *inode, unsigned long
blkoff,
if (buffer_uptodate(bh))
goto out;
- if (mode == READA) {
+ if (mode_flags & REQ_RAHEAD) {
if (!trylock_buffer(bh)) {
ret = -EBUSY;
goto failed_bh;
@@ -160,7 +160,7 @@ nilfs_mdt_submit_block(struct inode *inode, unsigned long
blkoff,
bh->b_end_io = end_buffer_read_sync;
get_bh(bh);
- submit_bh(mode, bh);
+ submit_bh(mode, mode_flags, bh);
ret = 0;
trace_nilfs2_mdt_submit_block(inode, inode->i_ino, blkoff, mode);
@@ -184,7 +184,7 @@ static int nilfs_mdt_read_block(struct inode *inode,
unsigned long block,
int i, nr_ra_blocks = NILFS_MDT_MAX_RA_BLOCKS;
int err;
- err = nilfs_mdt_submit_block(inode, block, READ, &first_bh);
+ err = nilfs_mdt_submit_block(inode, block, REQ_OP_READ, 0, &first_bh);
if (err == -EEXIST) /* internal code */
goto out;
@@ -194,7 +194,8 @@ static int nilfs_mdt_read_block(struct inode *inode,
unsigned long block,
if (readahead) {
blkoff = block + 1;
for (i = 0; i < nr_ra_blocks; i++, blkoff++) {
- err = nilfs_mdt_submit_block(inode, blkoff, READA, &bh);
+ err = nilfs_mdt_submit_block(inode, blkoff, REQ_OP_READ,
+ REQ_RAHEAD, &bh);
if (likely(!err || err == -EEXIST))
brelse(bh);
else if (err != -EBUSY)
diff --git a/fs/ntfs/aops.c b/fs/ntfs/aops.c
index 7521e11..57c64bd 100644
--- a/fs/ntfs/aops.c
+++ b/fs/ntfs/aops.c
@@ -362,7 +362,7 @@ handle_zblock:
for (i = 0; i < nr; i++) {
tbh = arr[i];
if (likely(!buffer_uptodate(tbh)))
- submit_bh(READ, tbh);
+ submit_bh(REQ_OP_READ, 0, tbh);
else
ntfs_end_buffer_async_read(tbh, 1);
}
@@ -877,7 +877,7 @@ lock_retry_remap:
do {
struct buffer_head *next = bh->b_this_page;
if (buffer_async_write(bh)) {
- submit_bh(WRITE, bh);
+ submit_bh(REQ_OP_WRITE, 0, bh);
need_end_writeback = false;
}
bh = next;
@@ -1202,7 +1202,7 @@ lock_retry_remap:
BUG_ON(!buffer_mapped(tbh));
get_bh(tbh);
tbh->b_end_io = end_buffer_write_sync;
- submit_bh(WRITE, tbh);
+ submit_bh(REQ_OP_WRITE, 0, tbh);
}
/* Synchronize the mft mirror now if not @sync. */
if (is_mft && !sync)
diff --git a/fs/ntfs/compress.c b/fs/ntfs/compress.c
index f82498c..1fd482c 100644
--- a/fs/ntfs/compress.c
+++ b/fs/ntfs/compress.c
@@ -674,7 +674,7 @@ lock_retry_remap:
}
get_bh(tbh);
tbh->b_end_io = end_buffer_read_sync;
- submit_bh(READ, tbh);
+ submit_bh(REQ_OP_READ, 0, tbh);
}
/* Wait for io completion on all buffer heads. */
diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c
index bed4d42..8846a6c 100644
--- a/fs/ntfs/file.c
+++ b/fs/ntfs/file.c
@@ -553,7 +553,7 @@ static inline int ntfs_submit_bh_for_read(struct buffer_head
*bh)
lock_buffer(bh);
get_bh(bh);
bh->b_end_io = end_buffer_read_sync;
- return submit_bh(READ, bh);
+ return submit_bh(REQ_OP_READ, 0, bh);
}
/**
diff --git a/fs/ntfs/logfile.c b/fs/ntfs/logfile.c
index c71de29..1c95c41 100644
--- a/fs/ntfs/logfile.c
+++ b/fs/ntfs/logfile.c
@@ -821,7 +821,7 @@ map_vcn:
* completed ignore errors afterwards as we can assume
* that if one buffer worked all of them will work.
*/
- submit_bh(WRITE, bh);
+ submit_bh(REQ_OP_WRITE, 0, bh);
if (should_wait) {
should_wait = false;
wait_on_buffer(bh);
diff --git a/fs/ntfs/mft.c b/fs/ntfs/mft.c
index 3014a36..38c6f7a 100644
--- a/fs/ntfs/mft.c
+++ b/fs/ntfs/mft.c
@@ -592,7 +592,7 @@ int ntfs_sync_mft_mirror(ntfs_volume *vol, const unsigned
long mft_no,
clear_buffer_dirty(tbh);
get_bh(tbh);
tbh->b_end_io = end_buffer_write_sync;
- submit_bh(WRITE, tbh);
+ submit_bh(REQ_OP_WRITE, 0, tbh);
}
/* Wait on i/o completion of buffers. */
for (i_bhs = 0; i_bhs < nr_bhs; i_bhs++) {
@@ -785,7 +785,7 @@ int write_mft_record_nolock(ntfs_inode *ni, MFT_RECORD *m,
int sync)
clear_buffer_dirty(tbh);
get_bh(tbh);
tbh->b_end_io = end_buffer_write_sync;
- submit_bh(WRITE, tbh);
+ submit_bh(REQ_OP_WRITE, 0, tbh);
}
/* Synchronize the mft mirror now if not @sync. */
if (!sync && ni->mft_no < vol->mftmirr_size)
diff --git a/fs/ocfs2/buffer_head_io.c b/fs/ocfs2/buffer_head_io.c
index fe50ded..fb775c9 100644
--- a/fs/ocfs2/buffer_head_io.c
+++ b/fs/ocfs2/buffer_head_io.c
@@ -79,7 +79,7 @@ int ocfs2_write_block(struct ocfs2_super *osb, struct
buffer_head *bh,
get_bh(bh); /* for end_buffer_write_sync() */
bh->b_end_io = end_buffer_write_sync;
- submit_bh(WRITE, bh);
+ submit_bh(REQ_OP_WRITE, 0, bh);
wait_on_buffer(bh);
@@ -149,7 +149,7 @@ int ocfs2_read_blocks_sync(struct ocfs2_super *osb, u64
block,
clear_buffer_uptodate(bh);
get_bh(bh); /* for end_buffer_read_sync() */
bh->b_end_io = end_buffer_read_sync;
- submit_bh(READ, bh);
+ submit_bh(REQ_OP_READ, 0, bh);
}
for (i = nr; i > 0; i--) {
@@ -305,7 +305,7 @@ int ocfs2_read_blocks(struct ocfs2_caching_info *ci, u64
block, int nr,
if (validate)
set_buffer_needs_validate(bh);
bh->b_end_io = end_buffer_read_sync;
- submit_bh(READ, bh);
+ submit_bh(REQ_OP_READ, 0, bh);
continue;
}
}
@@ -419,7 +419,7 @@ int ocfs2_write_super_or_backup(struct ocfs2_super *osb,
get_bh(bh); /* for end_buffer_write_sync() */
bh->b_end_io = end_buffer_write_sync;
ocfs2_compute_meta_ecc(osb->sb, bh->b_data, &di->i_check);
- submit_bh(WRITE, bh);
+ submit_bh(REQ_OP_WRITE, 0, bh);
wait_on_buffer(bh);
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index ae9e5b3..91155ed 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -2668,7 +2668,7 @@ static int reiserfs_write_full_page(struct page *page,
do {
struct buffer_head *next = bh->b_this_page;
if (buffer_async_write(bh)) {
- submit_bh(WRITE, bh);
+ submit_bh(REQ_OP_WRITE, 0, bh);
nr++;
}
put_bh(bh);
@@ -2728,7 +2728,7 @@ fail:
struct buffer_head *next = bh->b_this_page;
if (buffer_async_write(bh)) {
clear_buffer_dirty(bh);
- submit_bh(WRITE, bh);
+ submit_bh(REQ_OP_WRITE, 0, bh);
nr++;
}
put_bh(bh);
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 44c2bdc..688dce9 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -652,7 +652,7 @@ static void submit_logged_buffer(struct buffer_head *bh)
BUG();
if (!buffer_uptodate(bh))
BUG();
- submit_bh(WRITE, bh);
+ submit_bh(REQ_OP_WRITE, 0, bh);
}
static void submit_ordered_buffer(struct buffer_head *bh)
@@ -662,7 +662,7 @@ static void submit_ordered_buffer(struct buffer_head *bh)
clear_buffer_dirty(bh);
if (!buffer_uptodate(bh))
BUG();
- submit_bh(WRITE, bh);
+ submit_bh(REQ_OP_WRITE, 0, bh);
}
#define CHUNK_SIZE 32
@@ -2269,7 +2269,7 @@ abort_replay:
/* flush out the real blocks */
for (i = 0; i < get_desc_trans_len(desc); i++) {
set_buffer_dirty(real_blocks[i]);
- write_dirty_buffer(real_blocks[i], WRITE);
+ write_dirty_buffer(real_blocks[i], 0);
}
for (i = 0; i < get_desc_trans_len(desc); i++) {
wait_on_buffer(real_blocks[i]);
diff --git a/fs/ufs/util.c b/fs/ufs/util.c
index b6c2f94..5f68b1a 100644
--- a/fs/ufs/util.c
+++ b/fs/ufs/util.c
@@ -118,7 +118,7 @@ void ubh_sync_block(struct ufs_buffer_head *ubh)
unsigned i;
for (i = 0; i < ubh->count; i++)
- write_dirty_buffer(ubh->bh[i], WRITE);
+ write_dirty_buffer(ubh->bh[i], 0);
for (i = 0; i < ubh->count; i++)
wait_on_buffer(ubh->bh[i]);
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index c67f052..72ad52d 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -189,10 +189,11 @@ void unlock_buffer(struct buffer_head *bh);
void __lock_buffer(struct buffer_head *bh);
void ll_rw_block(int, int, struct buffer_head * bh[]);
int sync_dirty_buffer(struct buffer_head *bh);
-int __sync_dirty_buffer(struct buffer_head *bh, int rw);
-void write_dirty_buffer(struct buffer_head *bh, int rw);
-int _submit_bh(int rw, struct buffer_head *bh, unsigned long bio_flags);
-int submit_bh(int, struct buffer_head *);
+int __sync_dirty_buffer(struct buffer_head *bh, int op_flags);
+void write_dirty_buffer(struct buffer_head *bh, int op_flags);
+int _submit_bh(int op, int op_flags, struct buffer_head *bh,
+ unsigned long bio_flags);
+int submit_bh(int, int, struct buffer_head *);
void write_boundary_block(struct block_device *bdev,
sector_t bblock, unsigned blocksize);
int bh_uptodate_or_lock(struct buffer_head *bh);
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 05/35] fs: have ll_rw_block users pass in op and flags separately
From: Mike Christie <mchristi at redhat.com>
This has ll_rw_block users pass in the operation and flags separately,
so we can setup the bio->bi_op and bio-bi_rw flags.
v2:
1. Fix for kbuild error in ll_rw_block comments.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
fs/buffer.c | 19 ++++++++++---------
fs/ext4/inode.c | 6 +++---
fs/ext4/namei.c | 3 ++-
fs/ext4/super.c | 2 +-
fs/gfs2/bmap.c | 2 +-
fs/gfs2/meta_io.c | 4 ++--
fs/gfs2/quota.c | 2 +-
fs/isofs/compress.c | 2 +-
fs/jbd2/journal.c | 2 +-
fs/jbd2/recovery.c | 4 ++--
fs/ocfs2/aops.c | 2 +-
fs/ocfs2/super.c | 2 +-
fs/reiserfs/journal.c | 8 ++++----
fs/reiserfs/stree.c | 4 ++--
fs/reiserfs/super.c | 2 +-
fs/squashfs/block.c | 4 ++--
fs/udf/dir.c | 2 +-
fs/udf/directory.c | 2 +-
fs/udf/inode.c | 2 +-
fs/ufs/balloc.c | 2 +-
include/linux/buffer_head.h | 2 +-
21 files changed, 40 insertions(+), 38 deletions(-)
diff --git a/fs/buffer.c b/fs/buffer.c
index 3492de4..5408ca6 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -588,7 +588,7 @@ void write_boundary_block(struct block_device *bdev,
struct buffer_head *bh = __find_get_block(bdev, bblock + 1, blocksize);
if (bh) {
if (buffer_dirty(bh))
- ll_rw_block(WRITE, 1, &bh);
+ ll_rw_block(REQ_OP_WRITE, 0, 1, &bh);
put_bh(bh);
}
}
@@ -1395,7 +1395,7 @@ void __breadahead(struct block_device *bdev, sector_t
block, unsigned size)
{
struct buffer_head *bh = __getblk(bdev, block, size);
if (likely(bh)) {
- ll_rw_block(READA, 1, &bh);
+ ll_rw_block(REQ_OP_READ, READA, 1, &bh);
brelse(bh);
}
}
@@ -1955,7 +1955,7 @@ int __block_write_begin(struct page *page, loff_t pos,
unsigned len,
if (!buffer_uptodate(bh) && !buffer_delay(bh) &&
!buffer_unwritten(bh) &&
(block_start < from || block_end > to)) {
- ll_rw_block(READ, 1, &bh);
+ ll_rw_block(REQ_OP_READ, 0, 1, &bh);
*wait_bh++=bh;
}
}
@@ -2852,7 +2852,7 @@ int block_truncate_page(struct address_space *mapping,
if (!buffer_uptodate(bh) && !buffer_delay(bh) &&
!buffer_unwritten(bh)) {
err = -EIO;
- ll_rw_block(READ, 1, &bh);
+ ll_rw_block(REQ_OP_READ, 0, 1, &bh);
wait_on_buffer(bh);
/* Uhhuh. Read error. Complain and punt. */
if (!buffer_uptodate(bh))
@@ -3052,7 +3052,8 @@ EXPORT_SYMBOL(submit_bh);
/**
* ll_rw_block: low-level access to block devices (DEPRECATED)
- * @rw: whether to %READ or %WRITE or maybe %READA (readahead)
+ * @op: whether to %READ or %WRITE
+ * @op_flags: rq_flag_bits or %READA (readahead)
* @nr: number of &struct buffer_heads in the array
* @bhs: array of pointers to &struct buffer_head
*
@@ -3075,7 +3076,7 @@ EXPORT_SYMBOL(submit_bh);
* All of the buffers must be for the same device, and must also be a
* multiple of the current approved size for the device.
*/
-void ll_rw_block(int rw, int nr, struct buffer_head *bhs[])
+void ll_rw_block(int op, int op_flags, int nr, struct buffer_head *bhs[])
{
int i;
@@ -3084,18 +3085,18 @@ void ll_rw_block(int rw, int nr, struct buffer_head
*bhs[])
if (!trylock_buffer(bh))
continue;
- if (rw == WRITE) {
+ if (op == WRITE) {
if (test_clear_buffer_dirty(bh)) {
bh->b_end_io = end_buffer_write_sync;
get_bh(bh);
- submit_bh(rw, 0, bh);
+ submit_bh(op, op_flags, bh);
continue;
}
} else {
if (!buffer_uptodate(bh)) {
bh->b_end_io = end_buffer_read_sync;
get_bh(bh);
- submit_bh(rw, 0, bh);
+ submit_bh(op, op_flags, bh);
continue;
}
}
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 8a91e98..d916f2c 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -838,7 +838,7 @@ struct buffer_head *ext4_bread(handle_t *handle, struct
inode *inode,
return bh;
if (!bh || buffer_uptodate(bh))
return bh;
- ll_rw_block(READ | REQ_META | REQ_PRIO, 1, &bh);
+ ll_rw_block(REQ_OP_READ, REQ_META | REQ_PRIO, 1, &bh);
wait_on_buffer(bh);
if (buffer_uptodate(bh))
return bh;
@@ -992,7 +992,7 @@ static int ext4_block_write_begin(struct page *page, loff_t
pos, unsigned len,
if (!buffer_uptodate(bh) && !buffer_delay(bh) &&
!buffer_unwritten(bh) &&
(block_start < from || block_end > to)) {
- ll_rw_block(READ, 1, &bh);
+ ll_rw_block(REQ_OP_READ, 0, 1, &bh);
*wait_bh++ = bh;
decrypt = ext4_encrypted_inode(inode) &&
S_ISREG(inode->i_mode);
@@ -3541,7 +3541,7 @@ static int __ext4_block_zero_page_range(handle_t *handle,
if (!buffer_uptodate(bh)) {
err = -EIO;
- ll_rw_block(READ, 1, &bh);
+ ll_rw_block(REQ_OP_READ, 0, 1, &bh);
wait_on_buffer(bh);
/* Uhhuh. Read error. Complain and punt. */
if (!buffer_uptodate(bh))
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 48e4b89..a03d2e6 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -1438,7 +1438,8 @@ restart:
}
bh_use[ra_max] = bh;
if (bh)
- ll_rw_block(READ | REQ_META | REQ_PRIO,
+ ll_rw_block(REQ_OP_READ,
+ REQ_META | REQ_PRIO,
1, &bh);
}
}
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 9951dfe..23b706c 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4201,7 +4201,7 @@ static journal_t *ext4_get_dev_journal(struct super_block
*sb,
goto out_bdev;
}
journal->j_private = sb;
- ll_rw_block(READ | REQ_META | REQ_PRIO, 1, &journal->j_sb_buffer);
+ ll_rw_block(REQ_OP_READ, REQ_META | REQ_PRIO, 1,
&journal->j_sb_buffer);
wait_on_buffer(journal->j_sb_buffer);
if (!buffer_uptodate(journal->j_sb_buffer)) {
ext4_msg(sb, KERN_ERR, "I/O error on journal device");
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 29faf72..628d4a4 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -974,7 +974,7 @@ static int gfs2_block_truncate_page(struct address_space
*mapping, loff_t from)
if (!buffer_uptodate(bh)) {
err = -EIO;
- ll_rw_block(READ, 1, &bh);
+ ll_rw_block(REQ_OP_READ, 0, 1, &bh);
wait_on_buffer(bh);
/* Uhhuh. Read error. Complain and punt. */
if (!buffer_uptodate(bh))
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index dc1c9db..96c8140 100644
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -448,7 +448,7 @@ struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64
dblock, u32 extlen)
if (buffer_uptodate(first_bh))
goto out;
if (!buffer_locked(first_bh))
- ll_rw_block(READ_SYNC | REQ_META, 1, &first_bh);
+ ll_rw_block(REQ_OP_READ, READ_SYNC | REQ_META, 1, &first_bh);
dblock++;
extlen--;
@@ -457,7 +457,7 @@ struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64
dblock, u32 extlen)
bh = gfs2_getbuf(gl, dblock, CREATE);
if (!buffer_uptodate(bh) && !buffer_locked(bh))
- ll_rw_block(READA | REQ_META, 1, &bh);
+ ll_rw_block(REQ_OP_READ, READA | REQ_META, 1, &bh);
brelse(bh);
dblock++;
extlen--;
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index a398913..6ab01a6 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -730,7 +730,7 @@ static int gfs2_write_buf_to_page(struct gfs2_inode *ip,
unsigned long index,
if (PageUptodate(page))
set_buffer_uptodate(bh);
if (!buffer_uptodate(bh)) {
- ll_rw_block(READ | REQ_META, 1, &bh);
+ ll_rw_block(REQ_OP_READ, REQ_META, 1, &bh);
wait_on_buffer(bh);
if (!buffer_uptodate(bh))
goto unlock_out;
diff --git a/fs/isofs/compress.c b/fs/isofs/compress.c
index f311bf0..f9b5fc8 100644
--- a/fs/isofs/compress.c
+++ b/fs/isofs/compress.c
@@ -81,7 +81,7 @@ static loff_t zisofs_uncompress_block(struct inode *inode,
loff_t block_start,
blocknum = block_start >> bufshift;
memset(bhs, 0, (needblocks + 1) * sizeof(struct buffer_head *));
haveblocks = isofs_get_blocks(inode, blocknum, bhs, needblocks);
- ll_rw_block(READ, haveblocks, bhs);
+ ll_rw_block(REQ_OP_READ, 0, haveblocks, bhs);
curbh = 0;
curpage = 0;
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index a3e1776..8855f6b 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1496,7 +1496,7 @@ static int journal_get_superblock(journal_t *journal)
J_ASSERT(bh != NULL);
if (!buffer_uptodate(bh)) {
- ll_rw_block(READ, 1, &bh);
+ ll_rw_block(REQ_OP_READ, 0, 1, &bh);
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
printk(KERN_ERR
diff --git a/fs/jbd2/recovery.c b/fs/jbd2/recovery.c
index 08a456b..6daf0c9 100644
--- a/fs/jbd2/recovery.c
+++ b/fs/jbd2/recovery.c
@@ -104,7 +104,7 @@ static int do_readahead(journal_t *journal, unsigned int
start)
if (!buffer_uptodate(bh) && !buffer_locked(bh)) {
bufs[nbufs++] = bh;
if (nbufs == MAXBUF) {
- ll_rw_block(READ, nbufs, bufs);
+ ll_rw_block(REQ_OP_READ, 0, nbufs, bufs);
journal_brelse_array(bufs, nbufs);
nbufs = 0;
}
@@ -113,7 +113,7 @@ static int do_readahead(journal_t *journal, unsigned int
start)
}
if (nbufs)
- ll_rw_block(READ, nbufs, bufs);
+ ll_rw_block(REQ_OP_READ, 0, nbufs, bufs);
err = 0;
failed:
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index 56ce370..3497947 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -640,7 +640,7 @@ int ocfs2_map_page_blocks(struct page *page, u64 *p_blkno,
!buffer_new(bh) &&
ocfs2_should_read_blk(inode, page, block_start) &&
(block_start < from || block_end > to)) {
- ll_rw_block(READ, 1, &bh);
+ ll_rw_block(REQ_OP_READ, 0, 1, &bh);
*wait_bh++=bh;
}
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 7db631e..2bbf6b2 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -1819,7 +1819,7 @@ static int ocfs2_get_sector(struct super_block *sb,
if (!buffer_dirty(*bh))
clear_buffer_uptodate(*bh);
unlock_buffer(*bh);
- ll_rw_block(READ, 1, bh);
+ ll_rw_block(REQ_OP_READ, 0, 1, bh);
wait_on_buffer(*bh);
if (!buffer_uptodate(*bh)) {
mlog_errno(-EIO);
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 688dce9..09682cc 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -870,7 +870,7 @@ loop_next:
*/
if (buffer_dirty(bh) && unlikely(bh->b_page->mapping == NULL))
{
spin_unlock(lock);
- ll_rw_block(WRITE, 1, &bh);
+ ll_rw_block(REQ_OP_WRITE, 0, 1, &bh);
spin_lock(lock);
}
put_bh(bh);
@@ -1057,7 +1057,7 @@ static int flush_commit_list(struct super_block *s,
if (tbh) {
if (buffer_dirty(tbh)) {
depth = reiserfs_write_unlock_nested(s);
- ll_rw_block(WRITE, 1, &tbh);
+ ll_rw_block(REQ_OP_WRITE, 0, 1, &tbh);
reiserfs_write_lock_nested(s, depth);
}
put_bh(tbh) ;
@@ -2244,7 +2244,7 @@ abort_replay:
}
}
/* read in the log blocks, memcpy to the corresponding real block */
- ll_rw_block(READ, get_desc_trans_len(desc), log_blocks);
+ ll_rw_block(REQ_OP_READ, 0, get_desc_trans_len(desc), log_blocks);
for (i = 0; i < get_desc_trans_len(desc); i++) {
wait_on_buffer(log_blocks[i]);
@@ -2346,7 +2346,7 @@ static struct buffer_head *reiserfs_breada(struct
block_device *dev,
} else
bhlist[j++] = bh;
}
- ll_rw_block(READ, j, bhlist);
+ ll_rw_block(REQ_OP_READ, 0, j, bhlist);
for (i = 1; i < j; i++)
brelse(bhlist[i]);
bh = bhlist[0];
diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c
index 24cbe01..5f9b6df 100644
--- a/fs/reiserfs/stree.c
+++ b/fs/reiserfs/stree.c
@@ -551,7 +551,7 @@ static int search_by_key_reada(struct super_block *s,
if (!buffer_uptodate(bh[j])) {
if (depth == -1)
depth = reiserfs_write_unlock_nested(s);
- ll_rw_block(READA, 1, bh + j);
+ ll_rw_block(REQ_OP_READ, READA, 1, bh + j);
}
brelse(bh[j]);
}
@@ -660,7 +660,7 @@ int search_by_key(struct super_block *sb, const struct
cpu_key *key,
if (!buffer_uptodate(bh) && depth == -1)
depth = reiserfs_write_unlock_nested(sb);
- ll_rw_block(READ, 1, &bh);
+ ll_rw_block(REQ_OP_READ, 0, 1, &bh);
wait_on_buffer(bh);
if (depth != -1)
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index b8f2d1e..9938a51 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -1661,7 +1661,7 @@ static int read_super_block(struct super_block *s, int
offset)
/* after journal replay, reread all bitmap and super blocks */
static int reread_meta_blocks(struct super_block *s)
{
- ll_rw_block(READ, 1, &SB_BUFFER_WITH_SB(s));
+ ll_rw_block(REQ_OP_READ, 0, 1, &SB_BUFFER_WITH_SB(s));
wait_on_buffer(SB_BUFFER_WITH_SB(s));
if (!buffer_uptodate(SB_BUFFER_WITH_SB(s))) {
reiserfs_warning(s, "reiserfs-2504", "error reading the
super");
diff --git a/fs/squashfs/block.c b/fs/squashfs/block.c
index 0cea9b9..59375be 100644
--- a/fs/squashfs/block.c
+++ b/fs/squashfs/block.c
@@ -124,7 +124,7 @@ int squashfs_read_data(struct super_block *sb, u64 index,
int length,
goto block_release;
bytes += msblk->devblksize;
}
- ll_rw_block(READ, b, bh);
+ ll_rw_block(REQ_OP_READ, 0, b, bh);
} else {
/*
* Metadata block.
@@ -156,7 +156,7 @@ int squashfs_read_data(struct super_block *sb, u64 index,
int length,
goto block_release;
bytes += msblk->devblksize;
}
- ll_rw_block(READ, b - 1, bh + 1);
+ ll_rw_block(REQ_OP_READ, 0, b - 1, bh + 1);
}
for (i = 0; i < b; i++) {
diff --git a/fs/udf/dir.c b/fs/udf/dir.c
index b51b371..cfadce0 100644
--- a/fs/udf/dir.c
+++ b/fs/udf/dir.c
@@ -113,7 +113,7 @@ static int udf_readdir(struct file *file, struct dir_context
*ctx)
brelse(tmp);
}
if (num) {
- ll_rw_block(READA, num, bha);
+ ll_rw_block(REQ_OP_READ, READA, num, bha);
for (i = 0; i < num; i++)
brelse(bha[i]);
}
diff --git a/fs/udf/directory.c b/fs/udf/directory.c
index c763fda..71f3e0b 100644
--- a/fs/udf/directory.c
+++ b/fs/udf/directory.c
@@ -87,7 +87,7 @@ struct fileIdentDesc *udf_fileident_read(struct inode *dir,
loff_t *nf_pos,
brelse(tmp);
}
if (num) {
- ll_rw_block(READA, num, bha);
+ ll_rw_block(REQ_OP_READ, READA, num, bha);
for (i = 0; i < num; i++)
brelse(bha[i]);
}
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 166d3ed..757e63b 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -1200,7 +1200,7 @@ struct buffer_head *udf_bread(struct inode *inode, int
block,
if (buffer_uptodate(bh))
return bh;
- ll_rw_block(READ, 1, &bh);
+ ll_rw_block(REQ_OP_READ, 0, 1, &bh);
wait_on_buffer(bh);
if (buffer_uptodate(bh))
diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c
index dc5fae6..26a3bb1 100644
--- a/fs/ufs/balloc.c
+++ b/fs/ufs/balloc.c
@@ -292,7 +292,7 @@ static void ufs_change_blocknr(struct inode *inode, sector_t
beg,
if (!buffer_mapped(bh))
map_bh(bh, inode->i_sb, oldb + pos);
if (!buffer_uptodate(bh)) {
- ll_rw_block(READ, 1, &bh);
+ ll_rw_block(REQ_OP_READ, 0, 1, &bh);
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
ufs_error(inode->i_sb, __func__,
diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 72ad52d..9ab27bb 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -187,7 +187,7 @@ struct buffer_head *alloc_buffer_head(gfp_t gfp_flags);
void free_buffer_head(struct buffer_head * bh);
void unlock_buffer(struct buffer_head *bh);
void __lock_buffer(struct buffer_head *bh);
-void ll_rw_block(int, int, struct buffer_head * bh[]);
+void ll_rw_block(int, int, int, struct buffer_head * bh[]);
int sync_dirty_buffer(struct buffer_head *bh);
int __sync_dirty_buffer(struct buffer_head *bh, int op_flags);
void write_dirty_buffer(struct buffer_head *bh, int op_flags);
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 06/35] direct-io: set bi_op to REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch has the dio code set the bio bi_op to a REQ_OP.
It also begins to convert btrfs's dio_submit_t related code,
because of the submit_io callout use. In the btrfs_submit_direct
change, I OR'd the op and flag back together. It is only temporary.
The next patch will completely convert all the btrfs code paths.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
fs/btrfs/inode.c | 9 +++++----
fs/direct-io.c | 35 +++++++++++++++++++++--------------
include/linux/fs.h | 2 +-
3 files changed, 27 insertions(+), 19 deletions(-)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 25dcff7..3a7fe66 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -8380,14 +8380,14 @@ out_err:
return 0;
}
-static void btrfs_submit_direct(int rw, struct bio *dio_bio,
- struct inode *inode, loff_t file_offset)
+static void btrfs_submit_direct(struct bio *dio_bio, struct inode *inode,
+ loff_t file_offset)
{
struct btrfs_dio_private *dip = NULL;
struct bio *io_bio = NULL;
struct btrfs_io_bio *btrfs_bio;
int skip_sum;
- int write = rw & REQ_WRITE;
+ bool write = (dio_bio->bi_op == REQ_OP_WRITE);
int ret = 0;
skip_sum = BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM;
@@ -8438,7 +8438,8 @@ static void btrfs_submit_direct(int rw, struct bio
*dio_bio,
dio_data->unsubmitted_oe_range_end;
}
- ret = btrfs_submit_direct_hook(rw, dip, skip_sum);
+ ret = btrfs_submit_direct_hook(dio_bio->bi_op | dio_bio->bi_rw, dip,
+ skip_sum);
if (!ret)
return;
diff --git a/fs/direct-io.c b/fs/direct-io.c
index 1bce5c3..7cabf74 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -108,7 +108,8 @@ struct dio_submit {
/* dio_state communicated between submission path and end_io */
struct dio {
int flags; /* doesn't change */
- int rw;
+ int op;
+ int op_flags;
blk_qc_t bio_cookie;
struct block_device *bio_bdev;
struct inode *inode;
@@ -163,7 +164,7 @@ static inline int dio_refill_pages(struct dio *dio, struct
dio_submit *sdio)
ret = iov_iter_get_pages(sdio->iter, dio->pages, LONG_MAX, DIO_PAGES,
&sdio->from);
- if (ret < 0 && sdio->blocks_available && (dio->rw
& WRITE)) {
+ if (ret < 0 && sdio->blocks_available && (dio->op ==
REQ_OP_WRITE)) {
struct page *page = ZERO_PAGE(0);
/*
* A memory fault, but the filesystem has some outstanding
@@ -242,7 +243,8 @@ static ssize_t dio_complete(struct dio *dio, loff_t offset,
ssize_t ret,
transferred = dio->result;
/* Check for short read case */
- if ((dio->rw == READ) && ((offset + transferred) >
dio->i_size))
+ if ((dio->op == REQ_OP_READ) &&
+ ((offset + transferred) > dio->i_size))
transferred = dio->i_size - offset;
}
@@ -265,7 +267,7 @@ static ssize_t dio_complete(struct dio *dio, loff_t offset,
ssize_t ret,
inode_dio_end(dio->inode);
if (is_async) {
- if (dio->rw & WRITE) {
+ if (dio->op == REQ_OP_WRITE) {
int err;
err = generic_write_sync(dio->iocb->ki_filp, offset,
@@ -374,7 +376,8 @@ dio_bio_alloc(struct dio *dio, struct dio_submit *sdio,
bio->bi_bdev = bdev;
bio->bi_iter.bi_sector = first_sector;
- bio->bi_rw = dio->rw;
+ bio->bi_op = dio->op;
+ bio->bi_rw = dio->op_flags;
if (dio->is_async)
bio->bi_end_io = dio_bio_end_aio;
else
@@ -402,14 +405,13 @@ static inline void dio_bio_submit(struct dio *dio, struct
dio_submit *sdio)
dio->refcount++;
spin_unlock_irqrestore(&dio->bio_lock, flags);
- if (dio->is_async && dio->rw == READ &&
dio->should_dirty)
+ if (dio->is_async && dio->op == REQ_OP_READ &&
dio->should_dirty)
bio_set_pages_dirty(bio);
dio->bio_bdev = bio->bi_bdev;
if (sdio->submit_io) {
- sdio->submit_io(dio->rw, bio, dio->inode,
- sdio->logical_offset_in_bio);
+ sdio->submit_io(bio, dio->inode, sdio->logical_offset_in_bio);
dio->bio_cookie = BLK_QC_T_NONE;
} else
dio->bio_cookie = submit_bio(bio);
@@ -477,14 +479,14 @@ static int dio_bio_complete(struct dio *dio, struct bio
*bio)
if (bio->bi_error)
dio->io_error = -EIO;
- if (dio->is_async && dio->rw == READ &&
dio->should_dirty) {
+ if (dio->is_async && dio->op == REQ_OP_READ &&
dio->should_dirty) {
err = bio->bi_error;
bio_check_pages_dirty(bio); /* transfers ownership */
} else {
bio_for_each_segment_all(bvec, bio, i) {
struct page *page = bvec->bv_page;
- if (dio->rw == READ && !PageCompound(page) &&
+ if (dio->op == REQ_OP_READ && !PageCompound(page) &&
dio->should_dirty)
set_page_dirty_lock(page);
page_cache_release(page);
@@ -637,7 +639,7 @@ static int get_more_blocks(struct dio *dio, struct
dio_submit *sdio,
* which may decide to handle it or also return an unmapped
* buffer head.
*/
- create = dio->rw & WRITE;
+ create = dio->op == REQ_OP_WRITE;
if (dio->flags & DIO_SKIP_HOLES) {
if (sdio->block_in_file < (i_size_read(dio->inode) >>
sdio->blkbits))
@@ -787,7 +789,7 @@ submit_page_section(struct dio *dio, struct dio_submit
*sdio, struct page *page,
{
int ret = 0;
- if (dio->rw & WRITE) {
+ if (dio->op == REQ_OP_WRITE) {
/*
* Read accounting is performed in submit_bio()
*/
@@ -987,7 +989,7 @@ do_holes:
loff_t i_size_aligned;
/* AKPM: eargh, -ENOTBLK is a hack */
- if (dio->rw & WRITE) {
+ if (dio->op == REQ_OP_WRITE) {
page_cache_release(page);
return -ENOTBLK;
}
@@ -1200,7 +1202,12 @@ do_blockdev_direct_IO(struct kiocb *iocb, struct inode
*inode,
dio->is_async = true;
dio->inode = inode;
- dio->rw = iov_iter_rw(iter) == WRITE ? WRITE_ODIRECT : READ;
+ if (iov_iter_rw(iter) == WRITE) {
+ dio->op = REQ_OP_WRITE;
+ dio->op_flags = WRITE_ODIRECT;
+ } else {
+ dio->op = REQ_OP_READ;
+ }
/*
* For AIO O_(D)SYNC writes we need to defer completions to a workqueue
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 399b22b..beabae8 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2774,7 +2774,7 @@ extern int generic_file_open(struct inode * inode, struct
file * filp);
extern int nonseekable_open(struct inode * inode, struct file * filp);
#ifdef CONFIG_BLOCK
-typedef void (dio_submit_t)(int rw, struct bio *bio, struct inode *inode,
+typedef void (dio_submit_t)(struct bio *bio, struct inode *inode,
loff_t file_offset);
enum {
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 07/35] btrfs: have submit_one_bio users setup bio bi_op
From: Mike Christie <mchristi at redhat.com>
This patch has btrfs's submit_one_bio callers set
the bio->bi_op to a REQ_OP and the bi_rw to rq_flag_bits.
The next patches will continue to convert btrfs,
so submit_bio_hook and merge_bio_hook
related code will be modified to take only the bio. I did
not do it in this patch to try and keep it smaller.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
fs/btrfs/extent_io.c | 88 +++++++++++++++++++++++++++-------------------------
1 file changed, 45 insertions(+), 43 deletions(-)
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 454100e..4472d69 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2377,7 +2377,7 @@ static int bio_readpage_error(struct bio *failed_bio, u64
phy_offset,
int read_mode;
int ret;
- BUG_ON(failed_bio->bi_rw & REQ_WRITE);
+ BUG_ON(failed_bio->bi_op == REQ_OP_WRITE);
ret = btrfs_get_io_failure_record(inode, start, end, &failrec);
if (ret)
@@ -2403,6 +2403,8 @@ static int bio_readpage_error(struct bio *failed_bio, u64
phy_offset,
free_io_failure(inode, failrec);
return -EIO;
}
+ bio->bi_op = REQ_OP_READ;
+ bio->bi_rw = read_mode;
pr_debug("Repair Read Error: submitting new read[%#x] to this_mirror=%d,
in_validation=%d\n",
read_mode, failrec->this_mirror, failrec->in_validation);
@@ -2714,8 +2716,8 @@ struct bio *btrfs_io_bio_alloc(gfp_t gfp_mask, unsigned
int nr_iovecs)
}
-static int __must_check submit_one_bio(int rw, struct bio *bio,
- int mirror_num, unsigned long bio_flags)
+static int __must_check submit_one_bio(struct bio *bio, int mirror_num,
+ unsigned long bio_flags)
{
int ret = 0;
struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1;
@@ -2726,12 +2728,12 @@ static int __must_check submit_one_bio(int rw, struct
bio *bio,
start = page_offset(page) + bvec->bv_offset;
bio->bi_private = NULL;
- bio->bi_rw = rw;
bio_get(bio);
if (tree->ops && tree->ops->submit_bio_hook)
- ret = tree->ops->submit_bio_hook(page->mapping->host, rw, bio,
- mirror_num, bio_flags, start);
+ ret = tree->ops->submit_bio_hook(page->mapping->host,
+ bio->bi_rw, bio, mirror_num,
+ bio_flags, start);
else
btrfsic_submit_bio(bio);
@@ -2739,20 +2741,20 @@ static int __must_check submit_one_bio(int rw, struct
bio *bio,
return ret;
}
-static int merge_bio(int rw, struct extent_io_tree *tree, struct page *page,
+static int merge_bio(struct extent_io_tree *tree, struct page *page,
unsigned long offset, size_t size, struct bio *bio,
unsigned long bio_flags)
{
int ret = 0;
if (tree->ops && tree->ops->merge_bio_hook)
- ret = tree->ops->merge_bio_hook(rw, page, offset, size, bio,
- bio_flags);
+ ret = tree->ops->merge_bio_hook(bio->bi_op, page, offset, size,
+ bio, bio_flags);
BUG_ON(ret < 0);
return ret;
}
-static int submit_extent_page(int rw, struct extent_io_tree *tree,
+static int submit_extent_page(int op, int op_flags, struct extent_io_tree
*tree,
struct writeback_control *wbc,
struct page *page, sector_t sector,
size_t size, unsigned long offset,
@@ -2780,10 +2782,9 @@ static int submit_extent_page(int rw, struct
extent_io_tree *tree,
if (prev_bio_flags != bio_flags || !contig ||
force_bio_submit ||
- merge_bio(rw, tree, page, offset, page_size, bio, bio_flags) ||
+ merge_bio(tree, page, offset, page_size, bio, bio_flags) ||
bio_add_page(bio, page, page_size, offset) < page_size) {
- ret = submit_one_bio(rw, bio, mirror_num,
- prev_bio_flags);
+ ret = submit_one_bio(bio, mirror_num, prev_bio_flags);
if (ret < 0) {
*bio_ret = NULL;
return ret;
@@ -2804,6 +2805,8 @@ static int submit_extent_page(int rw, struct
extent_io_tree *tree,
bio_add_page(bio, page, page_size, offset);
bio->bi_end_io = end_io_func;
bio->bi_private = tree;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
if (wbc) {
wbc_init_bio(wbc, bio);
wbc_account_io(wbc, page, page_size);
@@ -2812,7 +2815,7 @@ static int submit_extent_page(int rw, struct
extent_io_tree *tree,
if (bio_ret)
*bio_ret = bio;
else
- ret = submit_one_bio(rw, bio, mirror_num, bio_flags);
+ ret = submit_one_bio(bio, mirror_num, bio_flags);
return ret;
}
@@ -2876,7 +2879,7 @@ static int __do_readpage(struct extent_io_tree *tree,
get_extent_t *get_extent,
struct extent_map **em_cached,
struct bio **bio, int mirror_num,
- unsigned long *bio_flags, int rw,
+ unsigned long *bio_flags, int read_flags,
u64 *prev_em_start)
{
struct inode *inode = page->mapping->host;
@@ -3059,8 +3062,8 @@ static int __do_readpage(struct extent_io_tree *tree,
}
pnr -= page->index;
- ret = submit_extent_page(rw, tree, NULL, page,
- sector, disk_io_size, pg_offset,
+ ret = submit_extent_page(REQ_OP_READ, read_flags, tree, NULL,
+ page, sector, disk_io_size, pg_offset,
bdev, bio, pnr,
end_bio_extent_readpage, mirror_num,
*bio_flags,
@@ -3091,7 +3094,7 @@ static inline void __do_contiguous_readpages(struct
extent_io_tree *tree,
get_extent_t *get_extent,
struct extent_map **em_cached,
struct bio **bio, int mirror_num,
- unsigned long *bio_flags, int rw,
+ unsigned long *bio_flags,
u64 *prev_em_start)
{
struct inode *inode;
@@ -3112,7 +3115,7 @@ static inline void __do_contiguous_readpages(struct
extent_io_tree *tree,
for (index = 0; index < nr_pages; index++) {
__do_readpage(tree, pages[index], get_extent, em_cached, bio,
- mirror_num, bio_flags, rw, prev_em_start);
+ mirror_num, bio_flags, 0, prev_em_start);
page_cache_release(pages[index]);
}
}
@@ -3122,7 +3125,7 @@ static void __extent_readpages(struct extent_io_tree
*tree,
int nr_pages, get_extent_t *get_extent,
struct extent_map **em_cached,
struct bio **bio, int mirror_num,
- unsigned long *bio_flags, int rw,
+ unsigned long *bio_flags,
u64 *prev_em_start)
{
u64 start = 0;
@@ -3144,7 +3147,7 @@ static void __extent_readpages(struct extent_io_tree
*tree,
index - first_index, start,
end, get_extent, em_cached,
bio, mirror_num, bio_flags,
- rw, prev_em_start);
+ prev_em_start);
start = page_start;
end = start + PAGE_CACHE_SIZE - 1;
first_index = index;
@@ -3155,7 +3158,7 @@ static void __extent_readpages(struct extent_io_tree
*tree,
__do_contiguous_readpages(tree, &pages[first_index],
index - first_index, start,
end, get_extent, em_cached, bio,
- mirror_num, bio_flags, rw,
+ mirror_num, bio_flags,
prev_em_start);
}
@@ -3163,7 +3166,7 @@ static int __extent_read_full_page(struct extent_io_tree
*tree,
struct page *page,
get_extent_t *get_extent,
struct bio **bio, int mirror_num,
- unsigned long *bio_flags, int rw)
+ unsigned long *bio_flags, int read_flags)
{
struct inode *inode = page->mapping->host;
struct btrfs_ordered_extent *ordered;
@@ -3183,7 +3186,7 @@ static int __extent_read_full_page(struct extent_io_tree
*tree,
}
ret = __do_readpage(tree, page, get_extent, NULL, bio, mirror_num,
- bio_flags, rw, NULL);
+ bio_flags, read_flags, NULL);
return ret;
}
@@ -3195,9 +3198,9 @@ int extent_read_full_page(struct extent_io_tree *tree,
struct page *page,
int ret;
ret = __extent_read_full_page(tree, page, get_extent, &bio, mirror_num,
- &bio_flags, READ);
+ &bio_flags, 0);
if (bio)
- ret = submit_one_bio(READ, bio, mirror_num, bio_flags);
+ ret = submit_one_bio(bio, mirror_num, bio_flags);
return ret;
}
@@ -3444,7 +3447,8 @@ static noinline_for_stack int __extent_writepage_io(struct
inode *inode,
page->index, cur, end);
}
- ret = submit_extent_page(write_flags, tree, wbc, page,
+ ret = submit_extent_page(REQ_OP_WRITE, write_flags,
+ tree, wbc, page,
sector, iosize, pg_offset,
bdev, &epd->bio, max_nr,
end_bio_extent_writepage,
@@ -3484,13 +3488,11 @@ static int __extent_writepage(struct page *page, struct
writeback_control *wbc,
size_t pg_offset = 0;
loff_t i_size = i_size_read(inode);
unsigned long end_index = i_size >> PAGE_CACHE_SHIFT;
- int write_flags;
+ int write_flags = 0;
unsigned long nr_written = 0;
if (wbc->sync_mode == WB_SYNC_ALL)
write_flags = WRITE_SYNC;
- else
- write_flags = WRITE;
trace___extent_writepage(page, inode, wbc);
@@ -3734,7 +3736,7 @@ static noinline_for_stack int write_one_eb(struct
extent_buffer *eb,
u64 offset = eb->start;
unsigned long i, num_pages;
unsigned long bio_flags = 0;
- int rw = (epd->sync_io ? WRITE_SYNC : WRITE) | REQ_META;
+ int write_flags = (epd->sync_io ? WRITE_SYNC : 0) | REQ_META;
int ret = 0;
clear_bit(EXTENT_BUFFER_WRITE_ERR, &eb->bflags);
@@ -3748,9 +3750,10 @@ static noinline_for_stack int write_one_eb(struct
extent_buffer *eb,
clear_page_dirty_for_io(p);
set_page_writeback(p);
- ret = submit_extent_page(rw, tree, wbc, p, offset >> 9,
- PAGE_CACHE_SIZE, 0, bdev, &epd->bio,
- -1, end_bio_extent_buffer_writepage,
+ ret = submit_extent_page(REQ_OP_WRITE, write_flags, tree, wbc,
+ p, offset >> 9, PAGE_CACHE_SIZE, 0,
+ bdev, &epd->bio, -1,
+ end_bio_extent_buffer_writepage,
0, epd->bio_flags, bio_flags, false);
epd->bio_flags = bio_flags;
if (ret) {
@@ -4039,13 +4042,13 @@ retry:
static void flush_epd_write_bio(struct extent_page_data *epd)
{
if (epd->bio) {
- int rw = WRITE;
int ret;
+ epd->bio->bi_op = REQ_OP_WRITE;
if (epd->sync_io)
- rw = WRITE_SYNC;
+ epd->bio->bi_rw = WRITE_SYNC;
- ret = submit_one_bio(rw, epd->bio, 0, epd->bio_flags);
+ ret = submit_one_bio(epd->bio, 0, epd->bio_flags);
BUG_ON(ret < 0); /* -ENOMEM */
epd->bio = NULL;
}
@@ -4172,19 +4175,19 @@ int extent_readpages(struct extent_io_tree *tree,
if (nr < ARRAY_SIZE(pagepool))
continue;
__extent_readpages(tree, pagepool, nr, get_extent, &em_cached,
- &bio, 0, &bio_flags, READ, &prev_em_start);
+ &bio, 0, &bio_flags, &prev_em_start);
nr = 0;
}
if (nr)
__extent_readpages(tree, pagepool, nr, get_extent, &em_cached,
- &bio, 0, &bio_flags, READ, &prev_em_start);
+ &bio, 0, &bio_flags, &prev_em_start);
if (em_cached)
free_extent_map(em_cached);
BUG_ON(!list_empty(pages));
if (bio)
- return submit_one_bio(READ, bio, 0, bio_flags);
+ return submit_one_bio(bio, 0, bio_flags);
return 0;
}
@@ -5206,7 +5209,7 @@ int read_extent_buffer_pages(struct extent_io_tree *tree,
err = __extent_read_full_page(tree, page,
get_extent, &bio,
mirror_num, &bio_flags,
- READ | REQ_META);
+ REQ_META);
if (err)
ret = err;
} else {
@@ -5215,8 +5218,7 @@ int read_extent_buffer_pages(struct extent_io_tree *tree,
}
if (bio) {
- err = submit_one_bio(READ | REQ_META, bio, mirror_num,
- bio_flags);
+ err = submit_one_bio(bio, mirror_num, bio_flags);
if (err)
return err;
}
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 08/35] btrfs: set bi_op tp REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch has btrfs set the bio bi_op to a REQ_OP, and rq_flag_bits
to bi_rw.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
fs/btrfs/check-integrity.c | 19 +++++++++----------
fs/btrfs/compression.c | 4 ++++
fs/btrfs/disk-io.c | 7 ++++---
fs/btrfs/inode.c | 20 +++++++++++++-------
fs/btrfs/raid56.c | 10 +++++-----
fs/btrfs/scrub.c | 9 +++++----
fs/btrfs/volumes.c | 20 ++++++++++----------
7 files changed, 50 insertions(+), 39 deletions(-)
diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c
index 1c3c40a..d95c323 100644
--- a/fs/btrfs/check-integrity.c
+++ b/fs/btrfs/check-integrity.c
@@ -1671,7 +1671,7 @@ static int btrfsic_read_block(struct btrfsic_state *state,
}
bio->bi_bdev = block_ctx->dev->bdev;
bio->bi_iter.bi_sector = dev_bytenr >> 9;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
for (j = i; j < num_pages; j++) {
ret = bio_add_page(bio, block_ctx->pagev[j],
@@ -2920,7 +2920,6 @@ int btrfsic_submit_bh(int op, int op_flags, struct
buffer_head *bh)
static void __btrfsic_submit_bio(struct bio *bio)
{
struct btrfsic_dev_state *dev_state;
- int rw = bio->bi_rw;
if (!btrfsic_is_initialized)
return;
@@ -2930,7 +2929,7 @@ static void __btrfsic_submit_bio(struct bio *bio)
* btrfsic_mount(), this might return NULL */
dev_state = btrfsic_dev_state_lookup(bio->bi_bdev);
if (NULL != dev_state &&
- (rw & WRITE) && NULL != bio->bi_io_vec) {
+ (bio->bi_op == REQ_OP_WRITE) && NULL != bio->bi_io_vec) {
unsigned int i;
u64 dev_bytenr;
u64 cur_bytenr;
@@ -2942,9 +2941,9 @@ static void __btrfsic_submit_bio(struct bio *bio)
if (dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
printk(KERN_INFO
- "submit_bio(rw=0x%x, bi_vcnt=%u,"
+ "submit_bio(rw=%d,0x%lx, bi_vcnt=%u,"
" bi_sector=%llu (bytenr %llu), bi_bdev=%p)\n",
- rw, bio->bi_vcnt,
+ bio->bi_op, bio->bi_rw, bio->bi_vcnt,
(unsigned long long)bio->bi_iter.bi_sector,
dev_bytenr, bio->bi_bdev);
@@ -2975,18 +2974,18 @@ static void __btrfsic_submit_bio(struct bio *bio)
btrfsic_process_written_block(dev_state, dev_bytenr,
mapped_datav, bio->bi_vcnt,
bio, &bio_is_patched,
- NULL, rw);
+ NULL, bio->bi_rw);
while (i > 0) {
i--;
kunmap(bio->bi_io_vec[i].bv_page);
}
kfree(mapped_datav);
- } else if (NULL != dev_state && (rw & REQ_FLUSH)) {
+ } else if (NULL != dev_state && (bio->bi_rw & REQ_FLUSH)) {
if (dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
printk(KERN_INFO
- "submit_bio(rw=0x%x FLUSH, bdev=%p)\n",
- rw, bio->bi_bdev);
+ "submit_bio(rw=%d,0x%lx FLUSH, bdev=%p)\n",
+ bio->bi_op, bio->bi_rw, bio->bi_bdev);
if (!dev_state->dummy_block_for_bio_bh_flush.is_iodone) {
if ((dev_state->state->print_mask &
(BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH |
@@ -3004,7 +3003,7 @@ static void __btrfsic_submit_bio(struct bio *bio)
block->never_written = 0;
block->iodone_w_error = 0;
block->flush_gen = dev_state->last_flush_gen + 1;
- block->submit_bio_bh_rw = rw;
+ block->submit_bio_bh_rw = bio->bi_rw;
block->orig_bio_bh_private = bio->bi_private;
block->orig_bio_bh_end_io.bio = bio->bi_end_io;
block->next_in_same_bio = NULL;
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 3346cd8..7e64f3e 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -363,6 +363,7 @@ int btrfs_submit_compressed_write(struct inode *inode, u64
start,
kfree(cb);
return -ENOMEM;
}
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_private = cb;
bio->bi_end_io = end_compressed_bio_write;
atomic_inc(&cb->pending_bios);
@@ -408,6 +409,7 @@ int btrfs_submit_compressed_write(struct inode *inode, u64
start,
bio = compressed_bio_alloc(bdev, first_byte, GFP_NOFS);
BUG_ON(!bio);
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_private = cb;
bio->bi_end_io = end_compressed_bio_write;
bio_add_page(bio, page, PAGE_CACHE_SIZE, 0);
@@ -646,6 +648,7 @@ int btrfs_submit_compressed_read(struct inode *inode, struct
bio *bio,
comp_bio = compressed_bio_alloc(bdev, cur_disk_byte, GFP_NOFS);
if (!comp_bio)
goto fail2;
+ comp_bio->bi_op = REQ_OP_READ;
comp_bio->bi_private = cb;
comp_bio->bi_end_io = end_compressed_bio_read;
atomic_inc(&cb->pending_bios);
@@ -699,6 +702,7 @@ int btrfs_submit_compressed_read(struct inode *inode, struct
bio *bio,
comp_bio = compressed_bio_alloc(bdev, cur_disk_byte,
GFP_NOFS);
BUG_ON(!comp_bio);
+ comp_bio->bi_op = REQ_OP_READ;
comp_bio->bi_private = cb;
comp_bio->bi_end_io = end_compressed_bio_read;
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index bb23db7..49d2f29 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -719,7 +719,7 @@ static void end_workqueue_bio(struct bio *bio)
fs_info = end_io_wq->info;
end_io_wq->error = bio->bi_error;
- if (bio->bi_rw & REQ_WRITE) {
+ if (bio->bi_op == REQ_OP_WRITE) {
if (end_io_wq->metadata == BTRFS_WQ_ENDIO_METADATA) {
wq = fs_info->endio_meta_write_workers;
func = btrfs_endio_meta_write_helper;
@@ -865,7 +865,7 @@ int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info,
struct inode *inode,
atomic_inc(&fs_info->nr_async_submits);
- if (rw & REQ_SYNC)
+ if (bio->bi_rw & REQ_SYNC)
btrfs_set_work_high_priority(&async->work);
btrfs_queue_work(fs_info->workers, &async->work);
@@ -943,7 +943,7 @@ static int btree_submit_bio_hook(struct inode *inode, int
rw, struct bio *bio,
int async = check_async_write(inode, bio_flags);
int ret;
- if (!(rw & REQ_WRITE)) {
+ if (bio->bi_op != REQ_OP_WRITE) {
/*
* called for a read, do the setup so that checksum validation
* can happen in the async kernel threads
@@ -3470,6 +3470,7 @@ static int write_dev_flush(struct btrfs_device *device,
int wait)
bio->bi_end_io = btrfs_end_empty_barrier;
bio->bi_bdev = device->bdev;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_rw = WRITE_FLUSH;
init_completion(&device->flush_wait);
bio->bi_private = &device->flush_wait;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 3a7fe66..19f38f5 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1894,7 +1894,7 @@ static int btrfs_submit_bio_hook(struct inode *inode, int
rw, struct bio *bio,
if (btrfs_is_free_space_inode(inode))
metadata = BTRFS_WQ_ENDIO_FREE_SPACE;
- if (!(rw & REQ_WRITE)) {
+ if (bio->bi_op != REQ_OP_WRITE) {
ret = btrfs_bio_wq_end_io(root->fs_info, bio, metadata);
if (ret)
goto out;
@@ -7730,7 +7730,7 @@ static inline int submit_dio_repair_bio(struct inode
*inode, struct bio *bio,
struct btrfs_root *root = BTRFS_I(inode)->root;
int ret;
- BUG_ON(rw & REQ_WRITE);
+ BUG_ON(bio->bi_op == REQ_OP_WRITE);
bio_get(bio);
@@ -7790,7 +7790,7 @@ static int dio_read_error(struct inode *inode, struct bio
*failed_bio,
int read_mode;
int ret;
- BUG_ON(failed_bio->bi_rw & REQ_WRITE);
+ BUG_ON(failed_bio->bi_op == REQ_OP_WRITE);
ret = btrfs_get_io_failure_record(inode, start, end, &failrec);
if (ret)
@@ -7818,6 +7818,8 @@ static int dio_read_error(struct inode *inode, struct bio
*failed_bio,
free_io_failure(inode, failrec);
return -EIO;
}
+ bio->bi_op = REQ_OP_READ;
+ bio->bi_rw = read_mode;
btrfs_debug(BTRFS_I(inode)->root->fs_info,
"Repair DIO Read Error: submitting new dio read[%#x] to
this_mirror=%d, in_validation=%d\n",
@@ -8132,8 +8134,8 @@ static void btrfs_end_dio_bio(struct bio *bio)
if (err)
btrfs_warn(BTRFS_I(dip->inode)->root->fs_info,
- "direct IO failed ino %llu rw %lu sector %#Lx len %u err no
%d",
- btrfs_ino(dip->inode), bio->bi_rw,
+ "direct IO failed ino %llu rw %d,%lu sector %#Lx len %u err no
%d",
+ btrfs_ino(dip->inode), bio->bi_op, bio->bi_rw,
(unsigned long long)bio->bi_iter.bi_sector,
bio->bi_iter.bi_size, err);
@@ -8211,7 +8213,7 @@ static inline int __btrfs_submit_dio_bio(struct bio *bio,
struct inode *inode,
int async_submit)
{
struct btrfs_dio_private *dip = bio->bi_private;
- int write = rw & REQ_WRITE;
+ bool write = bio->bi_op == REQ_OP_WRITE;
struct btrfs_root *root = BTRFS_I(inode)->root;
int ret;
@@ -8298,6 +8300,8 @@ static int btrfs_submit_direct_hook(int rw, struct
btrfs_dio_private *dip,
if (!bio)
return -ENOMEM;
+ bio->bi_op = orig_bio->bi_op;
+ bio->bi_rw = orig_bio->bi_rw;
bio->bi_private = dip;
bio->bi_end_io = btrfs_end_dio_bio;
btrfs_io_bio(bio)->logical = file_offset;
@@ -8335,12 +8339,14 @@ next_block:
start_sector, GFP_NOFS);
if (!bio)
goto out_err;
+ bio->bi_op = orig_bio->bi_op;
+ bio->bi_rw = orig_bio->bi_rw;
bio->bi_private = dip;
bio->bi_end_io = btrfs_end_dio_bio;
btrfs_io_bio(bio)->logical = file_offset;
map_length = orig_bio->bi_iter.bi_size;
- ret = btrfs_map_block(root->fs_info, rw,
+ ret = btrfs_map_block(root->fs_info, orig_bio->bi_op,
start_sector << 9,
&map_length, NULL, 0);
if (ret) {
diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c
index a8e66e4..8aa3ec9 100644
--- a/fs/btrfs/raid56.c
+++ b/fs/btrfs/raid56.c
@@ -1320,7 +1320,7 @@ write_data:
bio->bi_private = rbio;
bio->bi_end_io = raid_write_end_io;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
submit_bio(bio);
}
@@ -1575,7 +1575,7 @@ static int raid56_rmw_stripe(struct btrfs_raid_bio *rbio)
bio->bi_private = rbio;
bio->bi_end_io = raid_rmw_end_io;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
btrfs_bio_wq_end_io(rbio->fs_info, bio,
BTRFS_WQ_ENDIO_RAID56);
@@ -2100,7 +2100,7 @@ static int __raid56_parity_recover(struct btrfs_raid_bio
*rbio)
bio->bi_private = rbio;
bio->bi_end_io = raid_recover_end_io;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
btrfs_bio_wq_end_io(rbio->fs_info, bio,
BTRFS_WQ_ENDIO_RAID56);
@@ -2437,7 +2437,7 @@ submit_write:
bio->bi_private = rbio;
bio->bi_end_io = raid_write_end_io;
- bio->bi_rw = WRITE;
+ bio->bi_rw = REQ_OP_WRITE;
submit_bio(bio);
}
@@ -2616,7 +2616,7 @@ static void raid56_parity_scrub_stripe(struct
btrfs_raid_bio *rbio)
bio->bi_private = rbio;
bio->bi_end_io = raid56_parity_scrub_end_io;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
btrfs_bio_wq_end_io(rbio->fs_info, bio,
BTRFS_WQ_ENDIO_RAID56);
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 8315947..7273efe 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -1504,7 +1504,7 @@ static void scrub_recheck_block(struct btrfs_fs_info
*fs_info,
sblock->no_io_error_seen = 0;
} else {
bio->bi_iter.bi_sector = page->physical >> 9;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
if (btrfsic_submit_bio_wait(bio))
sblock->no_io_error_seen = 0;
@@ -1584,7 +1584,7 @@ static int scrub_repair_page_from_good_copy(struct
scrub_block *sblock_bad,
return -EIO;
bio->bi_bdev = page_bad->dev->bdev;
bio->bi_iter.bi_sector = page_bad->physical >> 9;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
ret = bio_add_page(bio, page_good->page, PAGE_SIZE, 0);
if (PAGE_SIZE != ret) {
@@ -1686,7 +1686,7 @@ again:
bio->bi_end_io = scrub_wr_bio_end_io;
bio->bi_bdev = sbio->dev->bdev;
bio->bi_iter.bi_sector = sbio->physical >> 9;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
sbio->err = 0;
} else if (sbio->physical + sbio->page_count * PAGE_SIZE !
spage->physical_for_dev_replace ||
@@ -2091,7 +2091,7 @@ again:
bio->bi_end_io = scrub_bio_end_io;
bio->bi_bdev = sbio->dev->bdev;
bio->bi_iter.bi_sector = sbio->physical >> 9;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
sbio->err = 0;
} else if (sbio->physical + sbio->page_count * PAGE_SIZE !
spage->physical ||
@@ -4394,6 +4394,7 @@ static int write_page_nocow(struct scrub_ctx *sctx,
bio->bi_iter.bi_size = 0;
bio->bi_iter.bi_sector = physical_for_dev_replace >> 9;
bio->bi_bdev = dev->bdev;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_rw = WRITE_SYNC;
ret = bio_add_page(bio, page, PAGE_CACHE_SIZE, 0);
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index f87678f..2be39f6 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -5879,7 +5879,7 @@ static void btrfs_end_bio(struct bio *bio)
BUG_ON(stripe_index >= bbio->num_stripes);
dev = bbio->stripes[stripe_index].dev;
if (dev->bdev) {
- if (bio->bi_rw & WRITE)
+ if (bio->bi_op == REQ_OP_WRITE)
btrfs_dev_stat_inc(dev,
BTRFS_DEV_STAT_WRITE_ERRS);
else
@@ -5944,7 +5944,7 @@ static noinline void btrfs_schedule_bio(struct btrfs_root
*root,
}
/* don't bother with additional async steps for reads, right now */
- if (!(bio->bi_rw & REQ_WRITE)) {
+ if (bio->bi_op == REQ_OP_READ) {
bio_get(bio);
btrfsic_submit_bio(bio);
bio_put(bio);
@@ -5993,15 +5993,14 @@ static void submit_stripe_bio(struct btrfs_root *root,
struct btrfs_bio *bbio,
btrfs_io_bio(bio)->stripe_index = dev_nr;
bio->bi_end_io = btrfs_end_bio;
bio->bi_iter.bi_sector = physical >> 9;
- bio->bi_rw |= rw;
#ifdef DEBUG
{
struct rcu_string *name;
rcu_read_lock();
name = rcu_dereference(dev->name);
- pr_debug("btrfs_map_bio: rw %d, sector=%llu, dev=%lu "
- "(%s id %llu), size=%u\n", rw,
+ pr_debug("btrfs_map_bio: rw %d 0x%x, sector=%llu, dev=%lu "
+ "(%s id %llu), size=%u\n", bio->bi_op, bio->bi_rw,
(u64)bio->bi_iter.bi_sector, (u_long)dev->bdev->bd_dev,
name->str, dev->devid, bio->bi_iter.bi_size);
rcu_read_unlock();
@@ -6048,8 +6047,8 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct
bio *bio,
map_length = length;
btrfs_bio_counter_inc_blocked(root->fs_info);
- ret = __btrfs_map_block(root->fs_info, rw, logical, &map_length,
&bbio,
- mirror_num, 1);
+ ret = __btrfs_map_block(root->fs_info, bio->bi_op, logical,
+ &map_length, &bbio, mirror_num, 1);
if (ret) {
btrfs_bio_counter_dec(root->fs_info);
return ret;
@@ -6063,10 +6062,10 @@ int btrfs_map_bio(struct btrfs_root *root, int rw,
struct bio *bio,
atomic_set(&bbio->stripes_pending, bbio->num_stripes);
if ((bbio->map_type & BTRFS_BLOCK_GROUP_RAID56_MASK) &&
- ((rw & WRITE) || (mirror_num > 1))) {
+ ((bio->bi_op == REQ_OP_WRITE) || (mirror_num > 1))) {
/* In this case, map_length has been set to the length of
a single stripe; not the whole write */
- if (rw & WRITE) {
+ if (bio->bi_op == REQ_OP_WRITE) {
ret = raid56_parity_write(root, bio, bbio, map_length);
} else {
ret = raid56_parity_recover(root, bio, bbio, map_length,
@@ -6085,7 +6084,8 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct
bio *bio,
for (dev_nr = 0; dev_nr < total_devs; dev_nr++) {
dev = bbio->stripes[dev_nr].dev;
- if (!dev || !dev->bdev || (rw & WRITE && !dev->writeable))
{
+ if (!dev || !dev->bdev ||
+ (bio->bi_op == REQ_OP_WRITE && !dev->writeable)) {
bbio_error(bbio, first_bio, logical);
continue;
}
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 09/35] btrfs: update __btrfs_map_block for bi_op transition
From: Mike Christie <mchristi at redhat.com>
We no longer pass in a bitmap of rq_flag_bits bits
to __btrfs_map_block. It will always be a REQ_OP,
or the btrfs specific REQ_GET_READ_MIRRORS,
so this drops the bit tests.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
fs/btrfs/extent-tree.c | 2 +-
fs/btrfs/inode.c | 2 +-
fs/btrfs/volumes.c | 55 +++++++++++++++++++++++++++-----------------------
fs/btrfs/volumes.h | 4 ++--
4 files changed, 34 insertions(+), 29 deletions(-)
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 083783b..1db6bd0 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2043,7 +2043,7 @@ int btrfs_discard_extent(struct btrfs_root *root, u64
bytenr,
/* Tell the block device(s) that the sectors can be discarded */
- ret = btrfs_map_block(root->fs_info, REQ_DISCARD,
+ ret = btrfs_map_block(root->fs_info, REQ_OP_DISCARD,
bytenr, &num_bytes, &bbio, 0);
/* Error condition is -ENOMEM */
if (!ret) {
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 19f38f5..49842d2 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -8279,7 +8279,7 @@ static int btrfs_submit_direct_hook(int rw, struct
btrfs_dio_private *dip,
int i;
map_length = orig_bio->bi_iter.bi_size;
- ret = btrfs_map_block(root->fs_info, rw, start_sector << 9,
+ ret = btrfs_map_block(root->fs_info, orig_bio->bi_op, start_sector
<< 9,
&map_length, NULL, 0);
if (ret)
return -EIO;
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 2be39f6..62fcbd2 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -5207,7 +5207,7 @@ void btrfs_put_bbio(struct btrfs_bio *bbio)
kfree(bbio);
}
-static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int rw,
+static int __btrfs_map_block(struct btrfs_fs_info *fs_info, int op,
u64 logical, u64 *length,
struct btrfs_bio **bbio_ret,
int mirror_num, int need_raid_map)
@@ -5285,7 +5285,7 @@ static int __btrfs_map_block(struct btrfs_fs_info
*fs_info, int rw,
raid56_full_stripe_start *= full_stripe_len;
}
- if (rw & REQ_DISCARD) {
+ if (op == REQ_OP_DISCARD) {
/* we don't discard raid56 yet */
if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) {
ret = -EOPNOTSUPP;
@@ -5298,7 +5298,7 @@ static int __btrfs_map_block(struct btrfs_fs_info
*fs_info, int rw,
For other RAID types and for RAID[56] reads, just allow a single
stripe (on a single disk). */
if ((map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) &&
- (rw & REQ_WRITE)) {
+ (op == REQ_OP_WRITE)) {
max_len = stripe_len * nr_data_stripes(map) -
(offset - raid56_full_stripe_start);
} else {
@@ -5323,8 +5323,8 @@ static int __btrfs_map_block(struct btrfs_fs_info
*fs_info, int rw,
btrfs_dev_replace_set_lock_blocking(dev_replace);
if (dev_replace_is_ongoing && mirror_num == map->num_stripes + 1
&&
- !(rw & (REQ_WRITE | REQ_DISCARD | REQ_GET_READ_MIRRORS)) &&
- dev_replace->tgtdev != NULL) {
+ op != REQ_OP_WRITE && op != REQ_OP_DISCARD &&
+ op != REQ_GET_READ_MIRRORS && dev_replace->tgtdev != NULL) {
/*
* in dev-replace case, for repair case (that's the only
* case where the mirror is selected explicitly when
@@ -5411,15 +5411,17 @@ static int __btrfs_map_block(struct btrfs_fs_info
*fs_info, int rw,
(offset + *length);
if (map->type & BTRFS_BLOCK_GROUP_RAID0) {
- if (rw & REQ_DISCARD)
+ if (op == REQ_OP_DISCARD)
num_stripes = min_t(u64, map->num_stripes,
stripe_nr_end - stripe_nr_orig);
stripe_nr = div_u64_rem(stripe_nr, map->num_stripes,
&stripe_index);
- if (!(rw & (REQ_WRITE | REQ_DISCARD | REQ_GET_READ_MIRRORS)))
+ if (op != REQ_OP_WRITE && op != REQ_OP_DISCARD &&
+ op != REQ_GET_READ_MIRRORS)
mirror_num = 1;
} else if (map->type & BTRFS_BLOCK_GROUP_RAID1) {
- if (rw & (REQ_WRITE | REQ_DISCARD | REQ_GET_READ_MIRRORS))
+ if (op == REQ_OP_WRITE || op == REQ_OP_DISCARD ||
+ op == REQ_GET_READ_MIRRORS)
num_stripes = map->num_stripes;
else if (mirror_num)
stripe_index = mirror_num - 1;
@@ -5432,7 +5434,8 @@ static int __btrfs_map_block(struct btrfs_fs_info
*fs_info, int rw,
}
} else if (map->type & BTRFS_BLOCK_GROUP_DUP) {
- if (rw & (REQ_WRITE | REQ_DISCARD | REQ_GET_READ_MIRRORS)) {
+ if (op == REQ_OP_WRITE || REQ_OP_DISCARD ||
+ op == REQ_GET_READ_MIRRORS) {
num_stripes = map->num_stripes;
} else if (mirror_num) {
stripe_index = mirror_num - 1;
@@ -5446,9 +5449,9 @@ static int __btrfs_map_block(struct btrfs_fs_info
*fs_info, int rw,
stripe_nr = div_u64_rem(stripe_nr, factor, &stripe_index);
stripe_index *= map->sub_stripes;
- if (rw & (REQ_WRITE | REQ_GET_READ_MIRRORS))
+ if (op == REQ_OP_WRITE || op == REQ_GET_READ_MIRRORS)
num_stripes = map->sub_stripes;
- else if (rw & REQ_DISCARD)
+ else if (op == REQ_OP_DISCARD)
num_stripes = min_t(u64, map->sub_stripes *
(stripe_nr_end - stripe_nr_orig),
map->num_stripes);
@@ -5466,7 +5469,7 @@ static int __btrfs_map_block(struct btrfs_fs_info
*fs_info, int rw,
} else if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) {
if (need_raid_map &&
- ((rw & (REQ_WRITE | REQ_GET_READ_MIRRORS)) ||
+ (op == REQ_OP_WRITE || op == REQ_GET_READ_MIRRORS ||
mirror_num > 1)) {
/* push stripe_nr back to the start of the full stripe */
stripe_nr = div_u64(raid56_full_stripe_start,
@@ -5494,8 +5497,8 @@ static int __btrfs_map_block(struct btrfs_fs_info
*fs_info, int rw,
/* We distribute the parity blocks across stripes */
div_u64_rem(stripe_nr + stripe_index, map->num_stripes,
&stripe_index);
- if (!(rw & (REQ_WRITE | REQ_DISCARD |
- REQ_GET_READ_MIRRORS)) && mirror_num <= 1)
+ if ((op != REQ_OP_WRITE && op != REQ_OP_DISCARD &&
+ op != REQ_GET_READ_MIRRORS) && mirror_num <= 1)
mirror_num = 1;
}
} else {
@@ -5512,9 +5515,9 @@ static int __btrfs_map_block(struct btrfs_fs_info
*fs_info, int rw,
num_alloc_stripes = num_stripes;
if (dev_replace_is_ongoing) {
- if (rw & (REQ_WRITE | REQ_DISCARD))
+ if (op == REQ_OP_WRITE || op == REQ_OP_DISCARD)
num_alloc_stripes <<= 1;
- if (rw & REQ_GET_READ_MIRRORS)
+ if (op == REQ_GET_READ_MIRRORS)
num_alloc_stripes++;
tgtdev_indexes = num_stripes;
}
@@ -5529,7 +5532,8 @@ static int __btrfs_map_block(struct btrfs_fs_info
*fs_info, int rw,
/* build raid_map */
if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK &&
- need_raid_map && ((rw & (REQ_WRITE | REQ_GET_READ_MIRRORS)) ||
+ need_raid_map &&
+ ((op == REQ_OP_WRITE || op == REQ_GET_READ_MIRRORS) ||
mirror_num > 1)) {
u64 tmp;
unsigned rot;
@@ -5554,7 +5558,7 @@ static int __btrfs_map_block(struct btrfs_fs_info
*fs_info, int rw,
RAID6_Q_STRIPE;
}
- if (rw & REQ_DISCARD) {
+ if (op == REQ_OP_DISCARD) {
u32 factor = 0;
u32 sub_stripes = 0;
u64 stripes_per_dev = 0;
@@ -5634,14 +5638,15 @@ static int __btrfs_map_block(struct btrfs_fs_info
*fs_info, int rw,
}
}
- if (rw & (REQ_WRITE | REQ_GET_READ_MIRRORS))
+ if (op == REQ_OP_WRITE || op == REQ_GET_READ_MIRRORS)
max_errors = btrfs_chunk_max_errors(map);
if (bbio->raid_map)
sort_parity_stripes(bbio, num_stripes);
tgtdev_indexes = 0;
- if (dev_replace_is_ongoing && (rw & (REQ_WRITE | REQ_DISCARD))
&&
+ if (dev_replace_is_ongoing &&
+ (op == REQ_OP_WRITE || op == REQ_OP_DISCARD) &&
dev_replace->tgtdev != NULL) {
int index_where_to_add;
u64 srcdev_devid = dev_replace->srcdev->devid;
@@ -5676,7 +5681,7 @@ static int __btrfs_map_block(struct btrfs_fs_info
*fs_info, int rw,
}
}
num_stripes = index_where_to_add;
- } else if (dev_replace_is_ongoing && (rw & REQ_GET_READ_MIRRORS)
&&
+ } else if (dev_replace_is_ongoing && (op == REQ_GET_READ_MIRRORS)
&&
dev_replace->tgtdev != NULL) {
u64 srcdev_devid = dev_replace->srcdev->devid;
int index_srcdev = 0;
@@ -5751,21 +5756,21 @@ out:
return ret;
}
-int btrfs_map_block(struct btrfs_fs_info *fs_info, int rw,
+int btrfs_map_block(struct btrfs_fs_info *fs_info, int op,
u64 logical, u64 *length,
struct btrfs_bio **bbio_ret, int mirror_num)
{
- return __btrfs_map_block(fs_info, rw, logical, length, bbio_ret,
+ return __btrfs_map_block(fs_info, op, logical, length, bbio_ret,
mirror_num, 0);
}
/* For Scrub/replace */
-int btrfs_map_sblock(struct btrfs_fs_info *fs_info, int rw,
+int btrfs_map_sblock(struct btrfs_fs_info *fs_info, int op,
u64 logical, u64 *length,
struct btrfs_bio **bbio_ret, int mirror_num,
int need_raid_map)
{
- return __btrfs_map_block(fs_info, rw, logical, length, bbio_ret,
+ return __btrfs_map_block(fs_info, op, logical, length, bbio_ret,
mirror_num, need_raid_map);
}
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index febdb7b..c64229e 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -421,10 +421,10 @@ int btrfs_account_dev_extents_size(struct btrfs_device
*device, u64 start,
u64 end, u64 *length);
void btrfs_get_bbio(struct btrfs_bio *bbio);
void btrfs_put_bbio(struct btrfs_bio *bbio);
-int btrfs_map_block(struct btrfs_fs_info *fs_info, int rw,
+int btrfs_map_block(struct btrfs_fs_info *fs_info, int op,
u64 logical, u64 *length,
struct btrfs_bio **bbio_ret, int mirror_num);
-int btrfs_map_sblock(struct btrfs_fs_info *fs_info, int rw,
+int btrfs_map_sblock(struct btrfs_fs_info *fs_info, int op,
u64 logical, u64 *length,
struct btrfs_bio **bbio_ret, int mirror_num,
int need_raid_map);
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 10/35] btrfs: don't pass rq_flag_bits if there is a bio
From: Mike Christie <mchristi at redhat.com>
The bio bi_op and bi_rw is now setup, so there is no need
to pass around the rq_flag_bits bits too.
v2:
1. Fix merge_bio issue where instead of removing rw/op argument
I passed it in again to the merge_bio related functions.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
fs/btrfs/compression.c | 13 ++++++-------
fs/btrfs/ctree.h | 2 +-
fs/btrfs/disk-io.c | 30 ++++++++++++------------------
fs/btrfs/disk-io.h | 2 +-
fs/btrfs/extent_io.c | 12 +++++-------
fs/btrfs/extent_io.h | 8 ++++----
fs/btrfs/inode.c | 44 ++++++++++++++++++++------------------------
fs/btrfs/volumes.c | 6 +++---
fs/btrfs/volumes.h | 2 +-
9 files changed, 53 insertions(+), 66 deletions(-)
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 7e64f3e..90028305 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -374,7 +374,7 @@ int btrfs_submit_compressed_write(struct inode *inode, u64
start,
page = compressed_pages[pg_index];
page->mapping = inode->i_mapping;
if (bio->bi_iter.bi_size)
- ret = io_tree->ops->merge_bio_hook(WRITE, page, 0,
+ ret = io_tree->ops->merge_bio_hook(page, 0,
PAGE_CACHE_SIZE,
bio, 0);
else
@@ -402,7 +402,7 @@ int btrfs_submit_compressed_write(struct inode *inode, u64
start,
BUG_ON(ret); /* -ENOMEM */
}
- ret = btrfs_map_bio(root, WRITE, bio, 0, 1);
+ ret = btrfs_map_bio(root, bio, 0, 1);
BUG_ON(ret); /* -ENOMEM */
bio_put(bio);
@@ -433,7 +433,7 @@ int btrfs_submit_compressed_write(struct inode *inode, u64
start,
BUG_ON(ret); /* -ENOMEM */
}
- ret = btrfs_map_bio(root, WRITE, bio, 0, 1);
+ ret = btrfs_map_bio(root, bio, 0, 1);
BUG_ON(ret); /* -ENOMEM */
bio_put(bio);
@@ -659,7 +659,7 @@ int btrfs_submit_compressed_read(struct inode *inode, struct
bio *bio,
page->index = em_start >> PAGE_CACHE_SHIFT;
if (comp_bio->bi_iter.bi_size)
- ret = tree->ops->merge_bio_hook(READ, page, 0,
+ ret = tree->ops->merge_bio_hook(page, 0,
PAGE_CACHE_SIZE,
comp_bio, 0);
else
@@ -690,8 +690,7 @@ int btrfs_submit_compressed_read(struct inode *inode, struct
bio *bio,
sums += DIV_ROUND_UP(comp_bio->bi_iter.bi_size,
root->sectorsize);
- ret = btrfs_map_bio(root, READ, comp_bio,
- mirror_num, 0);
+ ret = btrfs_map_bio(root, comp_bio, mirror_num, 0);
if (ret) {
bio->bi_error = ret;
bio_endio(comp_bio);
@@ -721,7 +720,7 @@ int btrfs_submit_compressed_read(struct inode *inode, struct
bio *bio,
BUG_ON(ret); /* -ENOMEM */
}
- ret = btrfs_map_bio(root, READ, comp_bio, mirror_num, 0);
+ ret = btrfs_map_bio(root, comp_bio, mirror_num, 0);
if (ret) {
bio->bi_error = ret;
bio_endio(comp_bio);
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index b69ad13..1c6bae3 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -4084,7 +4084,7 @@ int btrfs_create_subvol_root(struct btrfs_trans_handle
*trans,
struct btrfs_root *new_root,
struct btrfs_root *parent_root,
u64 new_dirid);
-int btrfs_merge_bio_hook(int rw, struct page *page, unsigned long offset,
+int btrfs_merge_bio_hook(struct page *page, unsigned long offset,
size_t size, struct bio *bio,
unsigned long bio_flags);
int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf);
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 49d2f29..9aa2b53 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -124,7 +124,6 @@ struct async_submit_bio {
struct list_head list;
extent_submit_bio_hook_t *submit_bio_start;
extent_submit_bio_hook_t *submit_bio_done;
- int rw;
int mirror_num;
unsigned long bio_flags;
/*
@@ -789,7 +788,7 @@ static void run_one_async_start(struct btrfs_work *work)
int ret;
async = container_of(work, struct async_submit_bio, work);
- ret = async->submit_bio_start(async->inode, async->rw, async->bio,
+ ret = async->submit_bio_start(async->inode, async->bio,
async->mirror_num, async->bio_flags,
async->bio_offset);
if (ret)
@@ -822,9 +821,8 @@ static void run_one_async_done(struct btrfs_work *work)
return;
}
- async->submit_bio_done(async->inode, async->rw, async->bio,
- async->mirror_num, async->bio_flags,
- async->bio_offset);
+ async->submit_bio_done(async->inode, async->bio,
async->mirror_num,
+ async->bio_flags, async->bio_offset);
}
static void run_one_async_free(struct btrfs_work *work)
@@ -836,7 +834,7 @@ static void run_one_async_free(struct btrfs_work *work)
}
int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode,
- int rw, struct bio *bio, int mirror_num,
+ struct bio *bio, int mirror_num,
unsigned long bio_flags,
u64 bio_offset,
extent_submit_bio_hook_t *submit_bio_start,
@@ -849,7 +847,6 @@ int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info,
struct inode *inode,
return -ENOMEM;
async->inode = inode;
- async->rw = rw;
async->bio = bio;
async->mirror_num = mirror_num;
async->submit_bio_start = submit_bio_start;
@@ -895,9 +892,8 @@ static int btree_csum_one_bio(struct bio *bio)
return ret;
}
-static int __btree_submit_bio_start(struct inode *inode, int rw,
- struct bio *bio, int mirror_num,
- unsigned long bio_flags,
+static int __btree_submit_bio_start(struct inode *inode, struct bio *bio,
+ int mirror_num, unsigned long bio_flags,
u64 bio_offset)
{
/*
@@ -907,7 +903,7 @@ static int __btree_submit_bio_start(struct inode *inode, int
rw,
return btree_csum_one_bio(bio);
}
-static int __btree_submit_bio_done(struct inode *inode, int rw, struct bio
*bio,
+static int __btree_submit_bio_done(struct inode *inode, struct bio *bio,
int mirror_num, unsigned long bio_flags,
u64 bio_offset)
{
@@ -917,7 +913,7 @@ static int __btree_submit_bio_done(struct inode *inode, int
rw, struct bio *bio,
* when we're called for a write, we're already in the async
* submission context. Just jump into btrfs_map_bio
*/
- ret = btrfs_map_bio(BTRFS_I(inode)->root, rw, bio, mirror_num, 1);
+ ret = btrfs_map_bio(BTRFS_I(inode)->root, bio, mirror_num, 1);
if (ret) {
bio->bi_error = ret;
bio_endio(bio);
@@ -936,7 +932,7 @@ static int check_async_write(struct inode *inode, unsigned
long bio_flags)
return 1;
}
-static int btree_submit_bio_hook(struct inode *inode, int rw, struct bio *bio,
+static int btree_submit_bio_hook(struct inode *inode, struct bio *bio,
int mirror_num, unsigned long bio_flags,
u64 bio_offset)
{
@@ -952,21 +948,19 @@ static int btree_submit_bio_hook(struct inode *inode, int
rw, struct bio *bio,
bio, BTRFS_WQ_ENDIO_METADATA);
if (ret)
goto out_w_error;
- ret = btrfs_map_bio(BTRFS_I(inode)->root, rw, bio,
- mirror_num, 0);
+ ret = btrfs_map_bio(BTRFS_I(inode)->root, bio, mirror_num, 0);
} else if (!async) {
ret = btree_csum_one_bio(bio);
if (ret)
goto out_w_error;
- ret = btrfs_map_bio(BTRFS_I(inode)->root, rw, bio,
- mirror_num, 0);
+ ret = btrfs_map_bio(BTRFS_I(inode)->root, bio, mirror_num, 0);
} else {
/*
* kthread helpers are used to submit writes so that
* checksumming can happen in parallel across all CPUs
*/
ret = btrfs_wq_submit_bio(BTRFS_I(inode)->root->fs_info,
- inode, rw, bio, mirror_num, 0,
+ inode, bio, mirror_num, 0,
bio_offset,
__btree_submit_bio_start,
__btree_submit_bio_done);
diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index 8e79d00..73c21a2 100644
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -122,7 +122,7 @@ void btrfs_csum_final(u32 crc, char *result);
int btrfs_bio_wq_end_io(struct btrfs_fs_info *info, struct bio *bio,
enum btrfs_wq_endio_type metadata);
int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode,
- int rw, struct bio *bio, int mirror_num,
+ struct bio *bio, int mirror_num,
unsigned long bio_flags, u64 bio_offset,
extent_submit_bio_hook_t *submit_bio_start,
extent_submit_bio_hook_t *submit_bio_done);
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 4472d69..db9e79d 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2409,8 +2409,7 @@ static int bio_readpage_error(struct bio *failed_bio, u64
phy_offset,
pr_debug("Repair Read Error: submitting new read[%#x] to this_mirror=%d,
in_validation=%d\n",
read_mode, failrec->this_mirror, failrec->in_validation);
- ret = tree->ops->submit_bio_hook(inode, read_mode, bio,
- failrec->this_mirror,
+ ret = tree->ops->submit_bio_hook(inode, bio, failrec->this_mirror,
failrec->bio_flags, 0);
if (ret) {
free_io_failure(inode, failrec);
@@ -2731,9 +2730,8 @@ static int __must_check submit_one_bio(struct bio *bio,
int mirror_num,
bio_get(bio);
if (tree->ops && tree->ops->submit_bio_hook)
- ret = tree->ops->submit_bio_hook(page->mapping->host,
- bio->bi_rw, bio, mirror_num,
- bio_flags, start);
+ ret = tree->ops->submit_bio_hook(page->mapping->host, bio,
+ mirror_num, bio_flags, start);
else
btrfsic_submit_bio(bio);
@@ -2747,8 +2745,8 @@ static int merge_bio(struct extent_io_tree *tree, struct
page *page,
{
int ret = 0;
if (tree->ops && tree->ops->merge_bio_hook)
- ret = tree->ops->merge_bio_hook(bio->bi_op, page, offset, size,
- bio, bio_flags);
+ ret = tree->ops->merge_bio_hook(page, offset, size, bio,
+ bio_flags);
BUG_ON(ret < 0);
return ret;
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 5dbf92e..f1040fe 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -63,9 +63,9 @@ struct btrfs_root;
struct btrfs_io_bio;
struct io_failure_record;
-typedef int (extent_submit_bio_hook_t)(struct inode *inode, int rw,
- struct bio *bio, int mirror_num,
- unsigned long bio_flags, u64 bio_offset);
+typedef int (extent_submit_bio_hook_t)(struct inode *inode, struct bio *bio,
+ int mirror_num, unsigned long bio_flags,
+ u64 bio_offset);
struct extent_io_ops {
int (*fill_delalloc)(struct inode *inode, struct page *locked_page,
u64 start, u64 end, int *page_started,
@@ -73,7 +73,7 @@ struct extent_io_ops {
int (*writepage_start_hook)(struct page *page, u64 start, u64 end);
int (*writepage_io_hook)(struct page *page, u64 start, u64 end);
extent_submit_bio_hook_t *submit_bio_hook;
- int (*merge_bio_hook)(int rw, struct page *page, unsigned long offset,
+ int (*merge_bio_hook)(struct page *page, unsigned long offset,
size_t size, struct bio *bio,
unsigned long bio_flags);
int (*readpage_io_failed_hook)(struct page *page, int failed_mirror);
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 49842d2..a3132d6 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1807,7 +1807,7 @@ static void btrfs_clear_bit_hook(struct inode *inode,
* extent_io.c merge_bio_hook, this must check the chunk tree to make sure
* we don't create bios that span stripes or chunks
*/
-int btrfs_merge_bio_hook(int rw, struct page *page, unsigned long offset,
+int btrfs_merge_bio_hook(struct page *page, unsigned long offset,
size_t size, struct bio *bio,
unsigned long bio_flags)
{
@@ -1822,7 +1822,7 @@ int btrfs_merge_bio_hook(int rw, struct page *page,
unsigned long offset,
length = bio->bi_iter.bi_size;
map_length = length;
- ret = btrfs_map_block(root->fs_info, rw, logical,
+ ret = btrfs_map_block(root->fs_info, bio->bi_op, logical,
&map_length, NULL, 0);
/* Will always return 0 with map_multi == NULL */
BUG_ON(ret < 0);
@@ -1839,9 +1839,8 @@ int btrfs_merge_bio_hook(int rw, struct page *page,
unsigned long offset,
* At IO completion time the cums attached on the ordered extent record
* are inserted into the btree
*/
-static int __btrfs_submit_bio_start(struct inode *inode, int rw,
- struct bio *bio, int mirror_num,
- unsigned long bio_flags,
+static int __btrfs_submit_bio_start(struct inode *inode, struct bio *bio,
+ int mirror_num, unsigned long bio_flags,
u64 bio_offset)
{
struct btrfs_root *root = BTRFS_I(inode)->root;
@@ -1860,14 +1859,14 @@ static int __btrfs_submit_bio_start(struct inode *inode,
int rw,
* At IO completion time the cums attached on the ordered extent record
* are inserted into the btree
*/
-static int __btrfs_submit_bio_done(struct inode *inode, int rw, struct bio
*bio,
+static int __btrfs_submit_bio_done(struct inode *inode, struct bio *bio,
int mirror_num, unsigned long bio_flags,
u64 bio_offset)
{
struct btrfs_root *root = BTRFS_I(inode)->root;
int ret;
- ret = btrfs_map_bio(root, rw, bio, mirror_num, 1);
+ ret = btrfs_map_bio(root, bio, mirror_num, 1);
if (ret) {
bio->bi_error = ret;
bio_endio(bio);
@@ -1879,7 +1878,7 @@ static int __btrfs_submit_bio_done(struct inode *inode,
int rw, struct bio *bio,
* extent_io.c submission hook. This does the right thing for csum calculation
* on write, or reading the csums from the tree before a read
*/
-static int btrfs_submit_bio_hook(struct inode *inode, int rw, struct bio *bio,
+static int btrfs_submit_bio_hook(struct inode *inode, struct bio *bio,
int mirror_num, unsigned long bio_flags,
u64 bio_offset)
{
@@ -1916,7 +1915,7 @@ static int btrfs_submit_bio_hook(struct inode *inode, int
rw, struct bio *bio,
goto mapit;
/* we're doing a write, do the async checksumming */
ret = btrfs_wq_submit_bio(BTRFS_I(inode)->root->fs_info,
- inode, rw, bio, mirror_num,
+ inode, bio, mirror_num,
bio_flags, bio_offset,
__btrfs_submit_bio_start,
__btrfs_submit_bio_done);
@@ -1928,7 +1927,7 @@ static int btrfs_submit_bio_hook(struct inode *inode, int
rw, struct bio *bio,
}
mapit:
- ret = btrfs_map_bio(root, rw, bio, mirror_num, 0);
+ ret = btrfs_map_bio(root, bio, mirror_num, 0);
out:
if (ret < 0) {
@@ -7725,7 +7724,7 @@ err:
}
static inline int submit_dio_repair_bio(struct inode *inode, struct bio *bio,
- int rw, int mirror_num)
+ int mirror_num)
{
struct btrfs_root *root = BTRFS_I(inode)->root;
int ret;
@@ -7739,7 +7738,7 @@ static inline int submit_dio_repair_bio(struct inode
*inode, struct bio *bio,
if (ret)
goto err;
- ret = btrfs_map_bio(root, rw, bio, mirror_num, 0);
+ ret = btrfs_map_bio(root, bio, mirror_num, 0);
err:
bio_put(bio);
return ret;
@@ -7825,8 +7824,7 @@ static int dio_read_error(struct inode *inode, struct bio
*failed_bio,
"Repair DIO Read Error: submitting new dio read[%#x] to
this_mirror=%d, in_validation=%d\n",
read_mode, failrec->this_mirror, failrec->in_validation);
- ret = submit_dio_repair_bio(inode, bio, read_mode,
- failrec->this_mirror);
+ ret = submit_dio_repair_bio(inode, bio, failrec->this_mirror);
if (ret) {
free_io_failure(inode, failrec);
bio_put(bio);
@@ -8116,7 +8114,7 @@ static void btrfs_endio_direct_write(struct bio *bio)
bio_put(bio);
}
-static int __btrfs_submit_bio_start_direct_io(struct inode *inode, int rw,
+static int __btrfs_submit_bio_start_direct_io(struct inode *inode,
struct bio *bio, int mirror_num,
unsigned long bio_flags, u64 offset)
{
@@ -8209,7 +8207,7 @@ static inline int btrfs_lookup_and_bind_dio_csum(struct
btrfs_root *root,
}
static inline int __btrfs_submit_dio_bio(struct bio *bio, struct inode *inode,
- int rw, u64 file_offset, int skip_sum,
+ u64 file_offset, int skip_sum,
int async_submit)
{
struct btrfs_dio_private *dip = bio->bi_private;
@@ -8234,8 +8232,7 @@ static inline int __btrfs_submit_dio_bio(struct bio *bio,
struct inode *inode,
if (write && async_submit) {
ret = btrfs_wq_submit_bio(root->fs_info,
- inode, rw, bio, 0, 0,
- file_offset,
+ inode, bio, 0, 0, file_offset,
__btrfs_submit_bio_start_direct_io,
__btrfs_submit_bio_done);
goto err;
@@ -8254,13 +8251,13 @@ static inline int __btrfs_submit_dio_bio(struct bio
*bio, struct inode *inode,
goto err;
}
map:
- ret = btrfs_map_bio(root, rw, bio, 0, async_submit);
+ ret = btrfs_map_bio(root, bio, 0, async_submit);
err:
bio_put(bio);
return ret;
}
-static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip,
+static int btrfs_submit_direct_hook(struct btrfs_dio_private *dip,
int skip_sum)
{
struct inode *inode = dip->inode;
@@ -8321,7 +8318,7 @@ next_block:
* before we're done setting it up
*/
atomic_inc(&dip->pending_bios);
- ret = __btrfs_submit_dio_bio(bio, inode, rw,
+ ret = __btrfs_submit_dio_bio(bio, inode,
file_offset, skip_sum,
async_submit);
if (ret) {
@@ -8366,7 +8363,7 @@ next_block:
}
submit:
- ret = __btrfs_submit_dio_bio(bio, inode, rw, file_offset, skip_sum,
+ ret = __btrfs_submit_dio_bio(bio, inode, file_offset, skip_sum,
async_submit);
if (!ret)
return 0;
@@ -8444,8 +8441,7 @@ static void btrfs_submit_direct(struct bio *dio_bio,
struct inode *inode,
dio_data->unsubmitted_oe_range_end;
}
- ret = btrfs_submit_direct_hook(dio_bio->bi_op | dio_bio->bi_rw, dip,
- skip_sum);
+ ret = btrfs_submit_direct_hook(dip, skip_sum);
if (!ret)
return;
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 62fcbd2..1fa90ab 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -5990,7 +5990,7 @@ static noinline void btrfs_schedule_bio(struct btrfs_root
*root,
static void submit_stripe_bio(struct btrfs_root *root, struct btrfs_bio *bbio,
struct bio *bio, u64 physical, int dev_nr,
- int rw, int async)
+ int async)
{
struct btrfs_device *dev = bbio->stripes[dev_nr].dev;
@@ -6035,7 +6035,7 @@ static void bbio_error(struct btrfs_bio *bbio, struct bio
*bio, u64 logical)
}
}
-int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio,
+int btrfs_map_bio(struct btrfs_root *root, struct bio *bio,
int mirror_num, int async_submit)
{
struct btrfs_device *dev;
@@ -6102,7 +6102,7 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct
bio *bio,
bio = first_bio;
submit_stripe_bio(root, bbio, bio,
- bbio->stripes[dev_nr].physical, dev_nr, rw,
+ bbio->stripes[dev_nr].physical, dev_nr,
async_submit);
}
btrfs_bio_counter_dec(root->fs_info);
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index c64229e..372974d0 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -437,7 +437,7 @@ int btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
struct btrfs_root *extent_root, u64 type);
void btrfs_mapping_init(struct btrfs_mapping_tree *tree);
void btrfs_mapping_tree_free(struct btrfs_mapping_tree *tree);
-int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio,
+int btrfs_map_bio(struct btrfs_root *root, struct bio *bio,
int mirror_num, int async_submit);
int btrfs_open_devices(struct btrfs_fs_devices *fs_devices,
fmode_t flags, void *holder);
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 11/35] f2fs: set bi_op to REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch has f2fs set the bio bi_op to a REQ_OP, and
rq_flag_bits to bi_rw.
This patch is compile tested only.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
fs/f2fs/checkpoint.c | 10 ++++++----
fs/f2fs/data.c | 33 ++++++++++++++++++++-------------
fs/f2fs/f2fs.h | 5 +++--
fs/f2fs/gc.c | 9 ++++++---
fs/f2fs/inline.c | 3 ++-
fs/f2fs/node.c | 8 +++++---
fs/f2fs/segment.c | 10 +++++++---
fs/f2fs/trace.c | 7 ++++---
include/trace/events/f2fs.h | 34 +++++++++++++++++++++-------------
9 files changed, 74 insertions(+), 45 deletions(-)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index f55355d..12ca43e 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -55,14 +55,15 @@ static struct page *__get_meta_page(struct f2fs_sb_info
*sbi, pgoff_t index,
struct f2fs_io_info fio = {
.sbi = sbi,
.type = META,
- .rw = READ_SYNC | REQ_META | REQ_PRIO,
+ .op = REQ_OP_READ,
+ .op_flags = READ_SYNC | REQ_META | REQ_PRIO,
.old_blkaddr = index,
.new_blkaddr = index,
.encrypted_page = NULL,
};
if (unlikely(!is_meta))
- fio.rw &= ~REQ_META;
+ fio.op_flags &= ~REQ_META;
repeat:
page = grab_cache_page(mapping, index);
if (!page) {
@@ -149,13 +150,14 @@ int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start,
int nrpages,
struct f2fs_io_info fio = {
.sbi = sbi,
.type = META,
- .rw = sync ? (READ_SYNC | REQ_META | REQ_PRIO) : READA,
+ .op = REQ_OP_READ,
+ .op_flags = sync ? (READ_SYNC | REQ_META | REQ_PRIO) : READA,
.encrypted_page = NULL,
};
struct blk_plug plug;
if (unlikely(type == META_POR))
- fio.rw &= ~REQ_META;
+ fio.op_flags &= ~REQ_META;
blk_start_plug(&plug);
for (; nrpages-- > 0; blkno++) {
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index ff623b2..586658c 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -105,11 +105,12 @@ static void __submit_merged_bio(struct f2fs_bio_info *io)
if (!io->bio)
return;
- if (is_read_io(fio->rw))
+ if (is_read_io(fio->op))
trace_f2fs_submit_read_bio(io->sbi->sb, fio, io->bio);
else
trace_f2fs_submit_write_bio(io->sbi->sb, fio, io->bio);
- io->bio->bi_rw = fio->rw;
+ io->bio->bi_op = fio->op;
+ io->bio->bi_rw = fio->op_flags;
submit_bio(io->bio);
io->bio = NULL;
@@ -177,10 +178,12 @@ static void __f2fs_submit_merged_bio(struct f2fs_sb_info
*sbi,
/* change META to META_FLUSH in the checkpoint procedure */
if (type >= META_FLUSH) {
io->fio.type = META_FLUSH;
+ io->fio.op = REQ_OP_WRITE;
if (test_opt(sbi, NOBARRIER))
- io->fio.rw = WRITE_FLUSH | REQ_META | REQ_PRIO;
+ io->fio.op_flags = WRITE_FLUSH | REQ_META | REQ_PRIO;
else
- io->fio.rw = WRITE_FLUSH_FUA | REQ_META | REQ_PRIO;
+ io->fio.op_flags = WRITE_FLUSH_FUA | REQ_META |
+ REQ_PRIO;
}
__submit_merged_bio(io);
out:
@@ -215,13 +218,14 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio)
f2fs_trace_ios(fio, 0);
/* Allocate a new bio */
- bio = __bio_alloc(fio->sbi, fio->new_blkaddr, 1,
is_read_io(fio->rw));
+ bio = __bio_alloc(fio->sbi, fio->new_blkaddr, 1,
is_read_io(fio->op));
if (bio_add_page(bio, page, PAGE_CACHE_SIZE, 0) < PAGE_CACHE_SIZE) {
bio_put(bio);
return -EFAULT;
}
- bio->bi_rw = fio->rw;
+ bio->bi_op = fio->op;
+ bio->bi_rw = fio->op_flags;
submit_bio(bio);
return 0;
@@ -232,7 +236,7 @@ void f2fs_submit_page_mbio(struct f2fs_io_info *fio)
struct f2fs_sb_info *sbi = fio->sbi;
enum page_type btype = PAGE_TYPE_OF_BIO(fio->type);
struct f2fs_bio_info *io;
- bool is_read = is_read_io(fio->rw);
+ bool is_read = is_read_io(fio->op);
struct page *bio_page;
io = is_read ? &sbi->read_io : &sbi->write_io[btype];
@@ -247,7 +251,7 @@ void f2fs_submit_page_mbio(struct f2fs_io_info *fio)
inc_page_count(sbi, F2FS_WRITEBACK);
if (io->bio && (io->last_block_in_bio != fio->new_blkaddr - 1
||
- io->fio.rw != fio->rw))
+ (io->fio.op != fio->op || io->fio.op_flags != fio->op_flags)))
__submit_merged_bio(io);
alloc_new:
if (io->bio == NULL) {
@@ -345,7 +349,7 @@ int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index)
}
struct page *get_read_data_page(struct inode *inode, pgoff_t index,
- int rw, bool for_write)
+ int op_flags, bool for_write)
{
struct address_space *mapping = inode->i_mapping;
struct dnode_of_data dn;
@@ -355,7 +359,8 @@ struct page *get_read_data_page(struct inode *inode, pgoff_t
index,
struct f2fs_io_info fio = {
.sbi = F2FS_I_SB(inode),
.type = DATA,
- .rw = rw,
+ .op = REQ_OP_READ,
+ .op_flags = op_flags,
.encrypted_page = NULL,
};
@@ -1000,7 +1005,7 @@ submit_and_realloc:
bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(block_nr);
bio->bi_end_io = f2fs_read_end_io;
bio->bi_private = ctx;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
}
if (bio_add_page(bio, page, blocksize, 0) < blocksize)
@@ -1134,7 +1139,8 @@ static int f2fs_write_data_page(struct page *page,
struct f2fs_io_info fio = {
.sbi = sbi,
.type = DATA,
- .rw = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : WRITE,
+ .op = REQ_OP_WRITE,
+ .op_flags = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : 0,
.page = page,
.encrypted_page = NULL,
};
@@ -1572,7 +1578,8 @@ repeat:
struct f2fs_io_info fio = {
.sbi = sbi,
.type = DATA,
- .rw = READ_SYNC,
+ .op = REQ_OP_READ,
+ .op_flags = READ_SYNC,
.old_blkaddr = blkaddr,
.new_blkaddr = blkaddr,
.page = page,
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index b57dee6..a7b4097 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -658,14 +658,15 @@ enum page_type {
struct f2fs_io_info {
struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */
enum page_type type; /* contains DATA/NODE/META/META_FLUSH */
- int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */
+ int op; /* contains REQ_OP_ */
+ int op_flags; /* rq_flag_bits */
block_t new_blkaddr; /* new block address to be written */
block_t old_blkaddr; /* old block address before Cow */
struct page *page; /* page to be written */
struct page *encrypted_page; /* encrypted page */
};
-#define is_read_io(rw) (((rw) & 1) == READ)
+#define is_read_io(rw) (rw == READ)
struct f2fs_bio_info {
struct f2fs_sb_info *sbi; /* f2fs superblock */
struct bio *bio; /* bios to merge */
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 4bd0c91..9f726a9 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -546,7 +546,8 @@ static void move_encrypted_block(struct inode *inode,
block_t bidx)
struct f2fs_io_info fio = {
.sbi = F2FS_I_SB(inode),
.type = DATA,
- .rw = READ_SYNC,
+ .op = REQ_OP_READ,
+ .op_flags = READ_SYNC,
.encrypted_page = NULL,
};
struct dnode_of_data dn;
@@ -613,7 +614,8 @@ static void move_encrypted_block(struct inode *inode,
block_t bidx)
f2fs_wait_on_page_writeback(dn.node_page, NODE, true);
allocate_data_block(fio.sbi, NULL, fio.old_blkaddr, &fio.new_blkaddr,
&sum, CURSEG_COLD_DATA);
- fio.rw = WRITE_SYNC;
+ fio.op = REQ_OP_WRITE;
+ fio.op_flags = WRITE_SYNC;
f2fs_submit_page_mbio(&fio);
dn.data_blkaddr = fio.new_blkaddr;
@@ -647,7 +649,8 @@ static void move_data_page(struct inode *inode, block_t
bidx, int gc_type)
struct f2fs_io_info fio = {
.sbi = F2FS_I_SB(inode),
.type = DATA,
- .rw = WRITE_SYNC,
+ .op = REQ_OP_WRITE,
+ .op_flags = WRITE_SYNC,
.page = page,
.encrypted_page = NULL,
};
diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c
index a89ca37..eddbe75 100644
--- a/fs/f2fs/inline.c
+++ b/fs/f2fs/inline.c
@@ -108,7 +108,8 @@ int f2fs_convert_inline_page(struct dnode_of_data *dn,
struct page *page)
struct f2fs_io_info fio = {
.sbi = F2FS_I_SB(dn->inode),
.type = DATA,
- .rw = WRITE_SYNC | REQ_PRIO,
+ .op = REQ_OP_WRITE,
+ .op_flags = WRITE_SYNC | REQ_PRIO,
.page = page,
.encrypted_page = NULL,
};
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 68506f4..bda0b30 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1046,14 +1046,15 @@ fail:
* 0: f2fs_put_page(page, 0)
* LOCKED_PAGE or error: f2fs_put_page(page, 1)
*/
-static int read_node_page(struct page *page, int rw)
+static int read_node_page(struct page *page, int op_flags)
{
struct f2fs_sb_info *sbi = F2FS_P_SB(page);
struct node_info ni;
struct f2fs_io_info fio = {
.sbi = sbi,
.type = NODE,
- .rw = rw,
+ .op = REQ_OP_READ,
+ .op_flags = op_flags,
.page = page,
.encrypted_page = NULL,
};
@@ -1403,7 +1404,8 @@ static int f2fs_write_node_page(struct page *page,
struct f2fs_io_info fio = {
.sbi = sbi,
.type = NODE,
- .rw = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : WRITE,
+ .op = REQ_OP_WRITE,
+ .op_flags = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : 0,
.page = page,
.encrypted_page = NULL,
};
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 34e99fe..e7c7947 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -253,7 +253,8 @@ static int __commit_inmem_pages(struct inode *inode,
struct f2fs_io_info fio = {
.sbi = sbi,
.type = DATA,
- .rw = WRITE_SYNC | REQ_PRIO,
+ .op = REQ_OP_WRITE,
+ .op_flags = WRITE_SYNC | REQ_PRIO,
.encrypted_page = NULL,
};
bool submit_bio = false;
@@ -402,6 +403,7 @@ repeat:
fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list);
bio->bi_bdev = sbi->sb->s_bdev;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_rw = WRITE_FLUSH;
ret = submit_bio_wait(bio);
@@ -435,6 +437,7 @@ int f2fs_issue_flush(struct f2fs_sb_info *sbi)
int ret;
bio->bi_bdev = sbi->sb->s_bdev;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_rw = WRITE_FLUSH;
ret = submit_bio_wait(bio);
bio_put(bio);
@@ -1399,7 +1402,8 @@ void write_meta_page(struct f2fs_sb_info *sbi, struct page
*page)
struct f2fs_io_info fio = {
.sbi = sbi,
.type = META,
- .rw = WRITE_SYNC | REQ_META | REQ_PRIO,
+ .op = REQ_OP_WRITE,
+ .op_flags = WRITE_SYNC | REQ_META | REQ_PRIO,
.old_blkaddr = page->index,
.new_blkaddr = page->index,
.page = page,
@@ -1407,7 +1411,7 @@ void write_meta_page(struct f2fs_sb_info *sbi, struct page
*page)
};
if (unlikely(page->index >= MAIN_BLKADDR(sbi)))
- fio.rw &= ~REQ_META;
+ fio.op_flags &= ~REQ_META;
set_page_writeback(page);
f2fs_submit_page_mbio(&fio);
diff --git a/fs/f2fs/trace.c b/fs/f2fs/trace.c
index 562ce08..73b4e1d 100644
--- a/fs/f2fs/trace.c
+++ b/fs/f2fs/trace.c
@@ -25,11 +25,11 @@ static inline void __print_last_io(void)
if (!last_io.len)
return;
- trace_printk("%3x:%3x %4x %-16s %2x %5x %12x %4x\n",
+ trace_printk("%3x:%3x %4x %-16s %2x %5x %5x %12x %4x\n",
last_io.major, last_io.minor,
last_io.pid, "----------------",
last_io.type,
- last_io.fio.rw,
+ last_io.fio.op, last_io.fio.op_flags,
last_io.fio.new_blkaddr,
last_io.len);
memset(&last_io, 0, sizeof(last_io));
@@ -101,7 +101,8 @@ void f2fs_trace_ios(struct f2fs_io_info *fio, int flush)
if (last_io.major == major && last_io.minor == minor &&
last_io.pid == pid &&
last_io.type == __file_type(inode, pid) &&
- last_io.fio.rw == fio->rw &&
+ last_io.fio.op == fio->op &&
+ last_io.fio.op_flags == fio->op_flags &&
last_io.fio.new_blkaddr + last_io.len = fio->new_blkaddr) {
last_io.len++;
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 0f56584..db75d69 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -56,17 +56,21 @@ TRACE_DEFINE_ENUM(CP_DISCARD);
{ IPU, "IN-PLACE" }, \
{ OPU, "OUT-OF-PLACE" })
-#define F2FS_BIO_MASK(t) (t & (READA | WRITE_FLUSH_FUA))
+#define F2FS_BIO_FLAG_MASK(t) (t & (READA | WRITE_FLUSH_FUA))
#define F2FS_BIO_EXTRA_MASK(t) (t & (REQ_META | REQ_PRIO))
-#define show_bio_type(type) show_bio_base(type), show_bio_extra(type)
+#define show_bio_type(op, op_flags) show_bio_op(op), \
+ show_bio_op_flags(op_flags), show_bio_extra(op_flags)
-#define show_bio_base(type) \
- __print_symbolic(F2FS_BIO_MASK(type), \
+#define show_bio_op(op) \
+ __print_symbolic(op, \
{ READ, "READ" }, \
+ { WRITE, "WRITE" })
+
+#define show_bio_op_flags(flags) \
+ __print_symbolic(F2FS_BIO_FLAG_MASK(flags), \
{ READA, "READAHEAD" }, \
{ READ_SYNC, "READ_SYNC" }, \
- { WRITE, "WRITE" }, \
{ WRITE_SYNC, "WRITE_SYNC" }, \
{ WRITE_FLUSH, "WRITE_FLUSH" }, \
{ WRITE_FUA, "WRITE_FUA" }, \
@@ -730,7 +734,8 @@ DECLARE_EVENT_CLASS(f2fs__submit_page_bio,
__field(pgoff_t, index)
__field(block_t, old_blkaddr)
__field(block_t, new_blkaddr)
- __field(int, rw)
+ __field(int, op)
+ __field(int, op_flags)
__field(int, type)
),
@@ -740,17 +745,18 @@ DECLARE_EVENT_CLASS(f2fs__submit_page_bio,
__entry->index = page->index;
__entry->old_blkaddr = fio->old_blkaddr;
__entry->new_blkaddr = fio->new_blkaddr;
- __entry->rw = fio->rw;
+ __entry->op = fio->op;
+ __entry->op_flags = fio->op_flags;
__entry->type = fio->type;
),
TP_printk("dev = (%d,%d), ino = %lu, page_index = 0x%lx, "
- "oldaddr = 0x%llx, newaddr = 0x%llx rw = %s%s, type = %s",
+ "oldaddr = 0x%llx, newaddr = 0x%llx rw = %s%si%s, type = %s",
show_dev_ino(__entry),
(unsigned long)__entry->index,
(unsigned long long)__entry->old_blkaddr,
(unsigned long long)__entry->new_blkaddr,
- show_bio_type(__entry->rw),
+ show_bio_type(__entry->op, __entry->op_flags),
show_block_type(__entry->type))
);
@@ -781,7 +787,8 @@ DECLARE_EVENT_CLASS(f2fs__submit_bio,
TP_STRUCT__entry(
__field(dev_t, dev)
- __field(int, rw)
+ __field(int, op)
+ __field(int, op_flags)
__field(int, type)
__field(sector_t, sector)
__field(unsigned int, size)
@@ -789,15 +796,16 @@ DECLARE_EVENT_CLASS(f2fs__submit_bio,
TP_fast_assign(
__entry->dev = sb->s_dev;
- __entry->rw = fio->rw;
+ __entry->op = fio->op;
+ __entry->op_flags = fio->op_flags;
__entry->type = fio->type;
__entry->sector = bio->bi_iter.bi_sector;
__entry->size = bio->bi_iter.bi_size;
),
- TP_printk("dev = (%d,%d), %s%s, %s, sector = %lld, size = %u",
+ TP_printk("dev = (%d,%d), %s%s%s, %s, sector = %lld, size = %u",
show_dev(__entry),
- show_bio_type(__entry->rw),
+ show_bio_type(__entry->op, __entry->op_flags),
show_block_type(__entry->type),
(unsigned long long)__entry->sector,
__entry->size)
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 12/35] gfs2: set bi_op to REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch has gfs2 set the bio bi_op to a REQ_OP, and
rq_flag_bits to bi_rw.
This patch is compile tested only.
v2:
Bob, I did not add your signed off, because there was
the gfs2_submit_bhs changes since last time you reviewed
it.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
fs/gfs2/log.c | 8 ++++----
fs/gfs2/lops.c | 12 +++++++-----
fs/gfs2/lops.h | 2 +-
fs/gfs2/meta_io.c | 8 +++++---
fs/gfs2/ops_fstype.c | 1 +
5 files changed, 18 insertions(+), 13 deletions(-)
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index 0ff028c..e58ccef0 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -657,7 +657,7 @@ static void log_write_header(struct gfs2_sbd *sdp, u32
flags)
struct gfs2_log_header *lh;
unsigned int tail;
u32 hash;
- int rw = WRITE_FLUSH_FUA | REQ_META;
+ int op_flags = WRITE_FLUSH_FUA | REQ_META;
struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO);
enum gfs2_freeze_state state = atomic_read(&sdp->sd_freeze_state);
lh = page_address(page);
@@ -682,12 +682,12 @@ static void log_write_header(struct gfs2_sbd *sdp, u32
flags)
if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags)) {
gfs2_ordered_wait(sdp);
log_flush_wait(sdp);
- rw = WRITE_SYNC | REQ_META | REQ_PRIO;
+ op_flags = WRITE_SYNC | REQ_META | REQ_PRIO;
}
sdp->sd_log_idle = (tail == sdp->sd_log_flush_head);
gfs2_log_write_page(sdp, page);
- gfs2_log_flush_bio(sdp, rw);
+ gfs2_log_flush_bio(sdp, REQ_OP_WRITE, op_flags);
log_flush_wait(sdp);
if (sdp->sd_log_tail != tail)
@@ -738,7 +738,7 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock
*gl,
gfs2_ordered_write(sdp);
lops_before_commit(sdp, tr);
- gfs2_log_flush_bio(sdp, WRITE);
+ gfs2_log_flush_bio(sdp, REQ_OP_WRITE, 0);
if (sdp->sd_log_head != sdp->sd_log_flush_head) {
log_flush_wait(sdp);
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index ce28242..c1099b4 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -230,17 +230,19 @@ static void gfs2_end_log_write(struct bio *bio)
/**
* gfs2_log_flush_bio - Submit any pending log bio
* @sdp: The superblock
- * @rw: The rw flags
+ * @op: REQ_OP
+ * @op_flags: rq_flag_bits
*
* Submit any pending part-built or full bio to the block device. If
* there is no pending bio, then this is a no-op.
*/
-void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int rw)
+void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int op, int op_flags)
{
if (sdp->sd_log_bio) {
atomic_inc(&sdp->sd_log_in_flight);
- sdp->sd_log_bio->bi_rw = rw;
+ sdp->sd_log_bio->bi_op = op;
+ sdp->sd_log_bio->bi_rw = op_flags;
submit_bio(sdp->sd_log_bio);
sdp->sd_log_bio = NULL;
}
@@ -300,7 +302,7 @@ static struct bio *gfs2_log_get_bio(struct gfs2_sbd *sdp,
u64 blkno)
nblk >>= sdp->sd_fsb2bb_shift;
if (blkno == nblk)
return bio;
- gfs2_log_flush_bio(sdp, WRITE);
+ gfs2_log_flush_bio(sdp, REQ_OP_WRITE, 0);
}
return gfs2_log_alloc_bio(sdp, blkno);
@@ -329,7 +331,7 @@ static void gfs2_log_write(struct gfs2_sbd *sdp, struct page
*page,
bio = gfs2_log_get_bio(sdp, blkno);
ret = bio_add_page(bio, page, size, offset);
if (ret == 0) {
- gfs2_log_flush_bio(sdp, WRITE);
+ gfs2_log_flush_bio(sdp, REQ_OP_WRITE, 0);
bio = gfs2_log_alloc_bio(sdp, blkno);
ret = bio_add_page(bio, page, size, offset);
WARN_ON(ret == 0);
diff --git a/fs/gfs2/lops.h b/fs/gfs2/lops.h
index a65a7ba..e529f53 100644
--- a/fs/gfs2/lops.h
+++ b/fs/gfs2/lops.h
@@ -27,7 +27,7 @@ extern const struct gfs2_log_operations gfs2_databuf_lops;
extern const struct gfs2_log_operations *gfs2_log_ops[];
extern void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page);
-extern void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int rw);
+extern void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int op, int op_flags);
extern void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh);
static inline unsigned int buf_limit(struct gfs2_sbd *sdp)
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index 96c8140..f790f38 100644
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -213,7 +213,8 @@ static void gfs2_meta_read_endio(struct bio *bio)
* Submit several consecutive buffer head I/O requests as a single bio I/O
* request. (See submit_bh_wbc.)
*/
-static void gfs2_submit_bhs(int rw, struct buffer_head *bhs[], int num)
+static void gfs2_submit_bhs(int op, int op_flags, struct buffer_head *bhs[],
+ int num)
{
struct buffer_head *bh = bhs[0];
struct bio *bio;
@@ -230,7 +231,8 @@ static void gfs2_submit_bhs(int rw, struct buffer_head
*bhs[], int num)
bio_add_page(bio, bh->b_page, bh->b_size, bh_offset(bh));
}
bio->bi_end_io = gfs2_meta_read_endio;
- bio->bi_rw = rw;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
submit_bio(bio);
}
@@ -281,7 +283,7 @@ int gfs2_meta_read(struct gfs2_glock *gl, u64 blkno, int
flags,
}
}
- gfs2_submit_bhs(READ_SYNC | REQ_META | REQ_PRIO, bhs, num);
+ gfs2_submit_bhs(REQ_OP_READ, READ_SYNC | REQ_META | REQ_PRIO, bhs, num);
if (!(flags & DIO_WAIT))
return 0;
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 4872a61..f3e1e0e 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -246,6 +246,7 @@ static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t
sector, int silent)
bio->bi_end_io = end_bio_io_page;
bio->bi_private = page;
+ bio->bi_op = REQ_OP_READ;
bio->bi_rw = READ_SYNC | REQ_META;
submit_bio(bio);
wait_on_page_locked(page);
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 13/35] xfs: set bi_op to REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch has xfs set the bio bi_op to a REQ_OP, and
rq_flag_bits to bi_rw.
Signed-off-by: Mike Christie <mchristi at redhat.com>
Acked-by: Dave Chinner <dchinner at redhat.com>
---
fs/xfs/xfs_aops.c | 3 ++-
fs/xfs/xfs_buf.c | 27 +++++++++++++++------------
2 files changed, 17 insertions(+), 13 deletions(-)
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 9cd38d1..21867fc 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -393,7 +393,8 @@ xfs_submit_ioend_bio(
atomic_inc(&ioend->io_remaining);
bio->bi_private = ioend;
bio->bi_end_io = xfs_end_bio;
- bio->bi_rw = (wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : WRITE);
+ bio->bi_op = REQ_OP_WRITE;
+ bio->bi_rw = WB_SYNC_ALL ? WRITE_SYNC : 0;
submit_bio(bio);
}
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index 079bb77..917774e 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -1131,7 +1131,8 @@ xfs_buf_ioapply_map(
int map,
int *buf_offset,
int *count,
- int rw)
+ int op,
+ int op_flags)
{
int page_index;
int total_nr_pages = bp->b_page_count;
@@ -1170,7 +1171,8 @@ next_chunk:
bio->bi_iter.bi_sector = sector;
bio->bi_end_io = xfs_buf_bio_end_io;
bio->bi_private = bp;
- bio->bi_rw = rw;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
for (; size && nr_pages; nr_pages--, page_index++) {
int rbytes, nbytes = PAGE_SIZE - offset;
@@ -1214,7 +1216,8 @@ _xfs_buf_ioapply(
struct xfs_buf *bp)
{
struct blk_plug plug;
- int rw;
+ int op;
+ int op_flags = 0;
int offset;
int size;
int i;
@@ -1233,14 +1236,13 @@ _xfs_buf_ioapply(
bp->b_ioend_wq = bp->b_target->bt_mount->m_buf_workqueue;
if (bp->b_flags & XBF_WRITE) {
+ op = REQ_OP_WRITE;
if (bp->b_flags & XBF_SYNCIO)
- rw = WRITE_SYNC;
- else
- rw = WRITE;
+ op_flags = WRITE_SYNC;
if (bp->b_flags & XBF_FUA)
- rw |= REQ_FUA;
+ op_flags |= REQ_FUA;
if (bp->b_flags & XBF_FLUSH)
- rw |= REQ_FLUSH;
+ op_flags |= REQ_FLUSH;
/*
* Run the write verifier callback function if it exists. If
@@ -1270,13 +1272,14 @@ _xfs_buf_ioapply(
}
}
} else if (bp->b_flags & XBF_READ_AHEAD) {
- rw = READA;
+ op = REQ_OP_READ;
+ op_flags = REQ_RAHEAD;
} else {
- rw = READ;
+ op = REQ_OP_READ;
}
/* we only use the buffer cache for meta-data */
- rw |= REQ_META;
+ op_flags |= REQ_META;
/*
* Walk all the vectors issuing IO on them. Set up the initial offset
@@ -1288,7 +1291,7 @@ _xfs_buf_ioapply(
size = BBTOB(bp->b_io_length);
blk_start_plug(&plug);
for (i = 0; i < bp->b_map_count; i++) {
- xfs_buf_ioapply_map(bp, i, &offset, &size, rw);
+ xfs_buf_ioapply_map(bp, i, &offset, &size, op, op_flags);
if (bp->b_error)
break;
if (size <= 0)
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 14/35] hfsplus: set bi_op to REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch has hfsplus set the bio bi_op to a REQ_OP, and
rq_flag_bits to bi_rw.
This patch is compile tested only.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
fs/hfsplus/hfsplus_fs.h | 2 +-
fs/hfsplus/part_tbl.c | 5 +++--
fs/hfsplus/super.c | 6 ++++--
fs/hfsplus/wrapper.c | 15 +++++++++------
4 files changed, 17 insertions(+), 11 deletions(-)
diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h
index f91a1fa..80154aa 100644
--- a/fs/hfsplus/hfsplus_fs.h
+++ b/fs/hfsplus/hfsplus_fs.h
@@ -525,7 +525,7 @@ int hfsplus_compare_dentry(const struct dentry *parent,
/* wrapper.c */
int hfsplus_submit_bio(struct super_block *sb, sector_t sector, void *buf,
- void **data, int rw);
+ void **data, int op, int op_flags);
int hfsplus_read_wrapper(struct super_block *sb);
/* time macros */
diff --git a/fs/hfsplus/part_tbl.c b/fs/hfsplus/part_tbl.c
index eb355d8..63164eb 100644
--- a/fs/hfsplus/part_tbl.c
+++ b/fs/hfsplus/part_tbl.c
@@ -112,7 +112,8 @@ static int hfs_parse_new_pmap(struct super_block *sb, void
*buf,
if ((u8 *)pm - (u8 *)buf >= buf_size) {
res = hfsplus_submit_bio(sb,
*part_start + HFS_PMAP_BLK + i,
- buf, (void **)&pm, READ);
+ buf, (void **)&pm, REQ_OP_READ,
+ 0);
if (res)
return res;
}
@@ -136,7 +137,7 @@ int hfs_part_find(struct super_block *sb,
return -ENOMEM;
res = hfsplus_submit_bio(sb, *part_start + HFS_PMAP_BLK,
- buf, &data, READ);
+ buf, &data, REQ_OP_READ, 0);
if (res)
goto out;
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index 5d54490..01cf313 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -219,7 +219,8 @@ static int hfsplus_sync_fs(struct super_block *sb, int wait)
error2 = hfsplus_submit_bio(sb,
sbi->part_start + HFSPLUS_VOLHEAD_SECTOR,
- sbi->s_vhdr_buf, NULL, WRITE_SYNC);
+ sbi->s_vhdr_buf, NULL, REQ_OP_WRITE,
+ WRITE_SYNC);
if (!error)
error = error2;
if (!write_backup)
@@ -227,7 +228,8 @@ static int hfsplus_sync_fs(struct super_block *sb, int wait)
error2 = hfsplus_submit_bio(sb,
sbi->part_start + sbi->sect_count - 2,
- sbi->s_backup_vhdr_buf, NULL, WRITE_SYNC);
+ sbi->s_backup_vhdr_buf, NULL, REQ_OP_WRITE,
+ WRITE_SYNC);
if (!error)
error2 = error;
out:
diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c
index d026bb3..c5c916d 100644
--- a/fs/hfsplus/wrapper.c
+++ b/fs/hfsplus/wrapper.c
@@ -30,7 +30,8 @@ struct hfsplus_wd {
* @sector: block to read or write, for blocks of HFSPLUS_SECTOR_SIZE bytes
* @buf: buffer for I/O
* @data: output pointer for location of requested data
- * @rw: direction of I/O
+ * @op: direction of I/O
+ * @op_flags: request op flags
*
* The unit of I/O is hfsplus_min_io_size(sb), which may be bigger than
* HFSPLUS_SECTOR_SIZE, and @buf must be sized accordingly. On reads
@@ -44,7 +45,7 @@ struct hfsplus_wd {
* will work correctly.
*/
int hfsplus_submit_bio(struct super_block *sb, sector_t sector,
- void *buf, void **data, int rw)
+ void *buf, void **data, int op, int op_flags)
{
struct bio *bio;
int ret = 0;
@@ -65,9 +66,10 @@ int hfsplus_submit_bio(struct super_block *sb, sector_t
sector,
bio = bio_alloc(GFP_NOIO, 1);
bio->bi_iter.bi_sector = sector;
bio->bi_bdev = sb->s_bdev;
- bio->bi_rw = rw;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
- if (!(rw & WRITE) && data)
+ if (op != WRITE && data)
*data = (u8 *)buf + offset;
while (io_size > 0) {
@@ -182,7 +184,7 @@ int hfsplus_read_wrapper(struct super_block *sb)
reread:
error = hfsplus_submit_bio(sb, part_start + HFSPLUS_VOLHEAD_SECTOR,
sbi->s_vhdr_buf, (void **)&sbi->s_vhdr,
- READ);
+ REQ_OP_READ, 0);
if (error)
goto out_free_backup_vhdr;
@@ -214,7 +216,8 @@ reread:
error = hfsplus_submit_bio(sb, part_start + part_size - 2,
sbi->s_backup_vhdr_buf,
- (void **)&sbi->s_backup_vhdr, READ);
+ (void **)&sbi->s_backup_vhdr, REQ_OP_READ,
+ 0);
if (error)
goto out_free_backup_vhdr;
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 15/35] mpage: set bi_op to REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch has the mpage.c code set the bio bi_op to a REQ_OP, and
rq_flag_bits to bi_rw.
I have run xfstest with xfs, but I am not sure
if I have stressed these code paths well.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
fs/mpage.c | 41 +++++++++++++++++++++--------------------
1 file changed, 21 insertions(+), 20 deletions(-)
diff --git a/fs/mpage.c b/fs/mpage.c
index 9479e73..f92df71 100644
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -56,11 +56,12 @@ static void mpage_end_io(struct bio *bio)
bio_put(bio);
}
-static struct bio *mpage_bio_submit(int rw, struct bio *bio)
+static struct bio *mpage_bio_submit(int op, int op_flags, struct bio *bio)
{
bio->bi_end_io = mpage_end_io;
- bio->bi_rw = rw;
- guard_bio_eod(rw, bio);
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
+ guard_bio_eod(op, bio);
submit_bio(bio);
return NULL;
}
@@ -270,7 +271,7 @@ do_mpage_readpage(struct bio *bio, struct page *page,
unsigned nr_pages,
* This page will go to BIO. Do we need to send this BIO off first?
*/
if (bio && (*last_block_in_bio != blocks[0] - 1))
- bio = mpage_bio_submit(READ, bio);
+ bio = mpage_bio_submit(REQ_OP_READ, 0, bio);
alloc_new:
if (bio == NULL) {
@@ -287,7 +288,7 @@ alloc_new:
length = first_hole << blkbits;
if (bio_add_page(bio, page, length, 0) < length) {
- bio = mpage_bio_submit(READ, bio);
+ bio = mpage_bio_submit(REQ_OP_READ, 0, bio);
goto alloc_new;
}
@@ -295,7 +296,7 @@ alloc_new:
nblocks = map_bh->b_size >> blkbits;
if ((buffer_boundary(map_bh) && relative_block == nblocks) ||
(first_hole != blocks_per_page))
- bio = mpage_bio_submit(READ, bio);
+ bio = mpage_bio_submit(REQ_OP_READ, 0, bio);
else
*last_block_in_bio = blocks[blocks_per_page - 1];
out:
@@ -303,7 +304,7 @@ out:
confused:
if (bio)
- bio = mpage_bio_submit(READ, bio);
+ bio = mpage_bio_submit(REQ_OP_READ, 0, bio);
if (!PageUptodate(page))
block_read_full_page(page, get_block);
else
@@ -385,7 +386,7 @@ mpage_readpages(struct address_space *mapping, struct
list_head *pages,
}
BUG_ON(!list_empty(pages));
if (bio)
- mpage_bio_submit(READ, bio);
+ mpage_bio_submit(REQ_OP_READ, 0, bio);
return 0;
}
EXPORT_SYMBOL(mpage_readpages);
@@ -406,7 +407,7 @@ int mpage_readpage(struct page *page, get_block_t get_block)
bio = do_mpage_readpage(bio, page, 1, &last_block_in_bio,
&map_bh, &first_logical_block, get_block, gfp);
if (bio)
- mpage_bio_submit(READ, bio);
+ mpage_bio_submit(REQ_OP_READ, 0, bio);
return 0;
}
EXPORT_SYMBOL(mpage_readpage);
@@ -487,7 +488,7 @@ static int __mpage_writepage(struct page *page, struct
writeback_control *wbc,
struct buffer_head map_bh;
loff_t i_size = i_size_read(inode);
int ret = 0;
- int wr = (wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : WRITE);
+ int op_flags = (wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : 0);
if (page_has_buffers(page)) {
struct buffer_head *head = page_buffers(page);
@@ -596,7 +597,7 @@ page_is_mapped:
* This page will go to BIO. Do we need to send this BIO off first?
*/
if (bio && mpd->last_block_in_bio != blocks[0] - 1)
- bio = mpage_bio_submit(wr, bio);
+ bio = mpage_bio_submit(REQ_OP_WRITE, op_flags, bio);
alloc_new:
if (bio == NULL) {
@@ -623,7 +624,7 @@ alloc_new:
wbc_account_io(wbc, page, PAGE_SIZE);
length = first_unmapped << blkbits;
if (bio_add_page(bio, page, length, 0) < length) {
- bio = mpage_bio_submit(wr, bio);
+ bio = mpage_bio_submit(REQ_OP_WRITE, op_flags, bio);
goto alloc_new;
}
@@ -633,7 +634,7 @@ alloc_new:
set_page_writeback(page);
unlock_page(page);
if (boundary || (first_unmapped != blocks_per_page)) {
- bio = mpage_bio_submit(wr, bio);
+ bio = mpage_bio_submit(REQ_OP_WRITE, op_flags, bio);
if (boundary_block) {
write_boundary_block(boundary_bdev,
boundary_block, 1 << blkbits);
@@ -645,7 +646,7 @@ alloc_new:
confused:
if (bio)
- bio = mpage_bio_submit(wr, bio);
+ bio = mpage_bio_submit(REQ_OP_WRITE, op_flags, bio);
if (mpd->use_writepage) {
ret = mapping->a_ops->writepage(page, wbc);
@@ -702,9 +703,9 @@ mpage_writepages(struct address_space *mapping,
ret = write_cache_pages(mapping, wbc, __mpage_writepage, &mpd);
if (mpd.bio) {
- int wr = (wbc->sync_mode == WB_SYNC_ALL ?
- WRITE_SYNC : WRITE);
- mpage_bio_submit(wr, mpd.bio);
+ int op_flags = (wbc->sync_mode == WB_SYNC_ALL ?
+ WRITE_SYNC : 0);
+ mpage_bio_submit(REQ_OP_WRITE, op_flags, mpd.bio);
}
}
blk_finish_plug(&plug);
@@ -723,9 +724,9 @@ int mpage_writepage(struct page *page, get_block_t
get_block,
};
int ret = __mpage_writepage(page, wbc, &mpd);
if (mpd.bio) {
- int wr = (wbc->sync_mode == WB_SYNC_ALL ?
- WRITE_SYNC : WRITE);
- mpage_bio_submit(wr, mpd.bio);
+ int op_flags = (wbc->sync_mode == WB_SYNC_ALL ?
+ WRITE_SYNC : 0);
+ mpage_bio_submit(REQ_OP_WRITE, op_flags, mpd.bio);
}
return ret;
}
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 16/35] nilfs: set bi_op to REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch has nilfs set the bio bi_op to a REQ_OP, and
rq_flag_bits to bi_rw.
This patch is compile tested only.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
fs/nilfs2/segbuf.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c
index 7666f1d..7b13e14 100644
--- a/fs/nilfs2/segbuf.c
+++ b/fs/nilfs2/segbuf.c
@@ -350,7 +350,8 @@ static void nilfs_end_bio_write(struct bio *bio)
}
static int nilfs_segbuf_submit_bio(struct nilfs_segment_buffer *segbuf,
- struct nilfs_write_info *wi, int mode)
+ struct nilfs_write_info *wi, int mode,
+ int mode_flags)
{
struct bio *bio = wi->bio;
int err;
@@ -368,7 +369,8 @@ static int nilfs_segbuf_submit_bio(struct
nilfs_segment_buffer *segbuf,
bio->bi_end_io = nilfs_end_bio_write;
bio->bi_private = segbuf;
- bio->bi_rw = mode;
+ bio->bi_op = mode;
+ bio->bi_rw = mode_flags;
submit_bio(bio);
segbuf->sb_nbio++;
@@ -442,7 +444,7 @@ static int nilfs_segbuf_submit_bh(struct
nilfs_segment_buffer *segbuf,
return 0;
}
/* bio is FULL */
- err = nilfs_segbuf_submit_bio(segbuf, wi, mode);
+ err = nilfs_segbuf_submit_bio(segbuf, wi, mode, 0);
/* never submit current bh */
if (likely(!err))
goto repeat;
@@ -466,19 +468,19 @@ static int nilfs_segbuf_write(struct nilfs_segment_buffer
*segbuf,
{
struct nilfs_write_info wi;
struct buffer_head *bh;
- int res = 0, rw = WRITE;
+ int res = 0;
wi.nilfs = nilfs;
nilfs_segbuf_prepare_write(segbuf, &wi);
list_for_each_entry(bh, &segbuf->sb_segsum_buffers, b_assoc_buffers) {
- res = nilfs_segbuf_submit_bh(segbuf, &wi, bh, rw);
+ res = nilfs_segbuf_submit_bh(segbuf, &wi, bh, REQ_OP_WRITE);
if (unlikely(res))
goto failed_bio;
}
list_for_each_entry(bh, &segbuf->sb_payload_buffers, b_assoc_buffers) {
- res = nilfs_segbuf_submit_bh(segbuf, &wi, bh, rw);
+ res = nilfs_segbuf_submit_bh(segbuf, &wi, bh, REQ_OP_WRITE);
if (unlikely(res))
goto failed_bio;
}
@@ -488,8 +490,8 @@ static int nilfs_segbuf_write(struct nilfs_segment_buffer
*segbuf,
* Last BIO is always sent through the following
* submission.
*/
- rw |= REQ_SYNC;
- res = nilfs_segbuf_submit_bio(segbuf, &wi, rw);
+ res = nilfs_segbuf_submit_bio(segbuf, &wi, REQ_OP_WRITE,
+ REQ_SYNC);
}
failed_bio:
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 17/35] ocfs2: set bi_op to REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch has ocfs2 set the bio bi_op to a REQ_OP, and
rq_flag_bits to bi_rw.
This patch is compile tested only.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
fs/ocfs2/cluster/heartbeat.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index bbc6203..4635f89 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -531,7 +531,8 @@ static void o2hb_bio_end_io(struct bio *bio)
static struct bio *o2hb_setup_one_bio(struct o2hb_region *reg,
struct o2hb_bio_wait_ctxt *wc,
unsigned int *current_slot,
- unsigned int max_slots, int rw)
+ unsigned int max_slots, int op,
+ int op_flags)
{
int len, current_page;
unsigned int vec_len, vec_start;
@@ -557,7 +558,8 @@ static struct bio *o2hb_setup_one_bio(struct o2hb_region
*reg,
bio->bi_bdev = reg->hr_bdev;
bio->bi_private = wc;
bio->bi_end_io = o2hb_bio_end_io;
- bio->bi_rw = rw;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
vec_start = (cs << bits) % PAGE_CACHE_SIZE;
while(cs < max_slots) {
@@ -594,7 +596,7 @@ static int o2hb_read_slots(struct o2hb_region *reg,
while(current_slot < max_slots) {
bio = o2hb_setup_one_bio(reg, &wc, ¤t_slot, max_slots,
- READ);
+ REQ_OP_READ, 0);
if (IS_ERR(bio)) {
status = PTR_ERR(bio);
mlog_errno(status);
@@ -626,7 +628,8 @@ static int o2hb_issue_node_write(struct o2hb_region *reg,
slot = o2nm_this_node();
- bio = o2hb_setup_one_bio(reg, write_wc, &slot, slot+1, WRITE_SYNC);
+ bio = o2hb_setup_one_bio(reg, write_wc, &slot, slot+1, REQ_OP_WRITE,
+ WRITE_SYNC);
if (IS_ERR(bio)) {
status = PTR_ERR(bio);
mlog_errno(status);
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 18/35] pm: set bi_op to REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch has the pm swap code set the bio bi_op to a REQ_OP, and
rq_flag_bits to bi_rw.
This patch is compile tested only.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
kernel/power/swap.c | 31 +++++++++++++++++++------------
1 file changed, 19 insertions(+), 12 deletions(-)
diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index 4d050eb..adbcb1b 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -250,7 +250,7 @@ static void hib_end_io(struct bio *bio)
bio_put(bio);
}
-static int hib_submit_io(int rw, pgoff_t page_off, void *addr,
+static int hib_submit_io(int op, int op_flags, pgoff_t page_off, void *addr,
struct hib_bio_batch *hb)
{
struct page *page = virt_to_page(addr);
@@ -260,7 +260,8 @@ static int hib_submit_io(int rw, pgoff_t page_off, void
*addr,
bio = bio_alloc(__GFP_RECLAIM | __GFP_HIGH, 1);
bio->bi_iter.bi_sector = page_off * (PAGE_SIZE >> 9);
bio->bi_bdev = hib_resume_bdev;
- bio->bi_rw = rw;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
if (bio_add_page(bio, page, PAGE_SIZE, 0) < PAGE_SIZE) {
printk(KERN_ERR "PM: Adding page to bio failed at %llu\n",
@@ -296,7 +297,8 @@ static int mark_swapfiles(struct swap_map_handle *handle,
unsigned int flags)
{
int error;
- hib_submit_io(READ_SYNC, swsusp_resume_block, swsusp_header, NULL);
+ hib_submit_io(REQ_OP_READ, READ_SYNC, swsusp_resume_block,
+ swsusp_header, NULL);
if (!memcmp("SWAP-SPACE",swsusp_header->sig, 10) ||
!memcmp("SWAPSPACE2",swsusp_header->sig, 10)) {
memcpy(swsusp_header->orig_sig,swsusp_header->sig, 10);
@@ -305,8 +307,8 @@ static int mark_swapfiles(struct swap_map_handle *handle,
unsigned int flags)
swsusp_header->flags = flags;
if (flags & SF_CRC32_MODE)
swsusp_header->crc32 = handle->crc32;
- error = hib_submit_io(WRITE_SYNC, swsusp_resume_block,
- swsusp_header, NULL);
+ error = hib_submit_io(REQ_OP_WRITE, WRITE_SYNC,
+ swsusp_resume_block, swsusp_header, NULL);
} else {
printk(KERN_ERR "PM: Swap header not found!\n");
error = -ENODEV;
@@ -379,7 +381,7 @@ static int write_page(void *buf, sector_t offset, struct
hib_bio_batch *hb)
} else {
src = buf;
}
- return hib_submit_io(WRITE_SYNC, offset, src, hb);
+ return hib_submit_io(REQ_OP_WRITE, WRITE_SYNC, offset, src, hb);
}
static void release_swap_writer(struct swap_map_handle *handle)
@@ -982,7 +984,8 @@ static int get_swap_reader(struct swap_map_handle *handle,
return -ENOMEM;
}
- error = hib_submit_io(READ_SYNC, offset, tmp->map, NULL);
+ error = hib_submit_io(REQ_OP_READ, READ_SYNC, offset,
+ tmp->map, NULL);
if (error) {
release_swap_reader(handle);
return error;
@@ -1006,7 +1009,7 @@ static int swap_read_page(struct swap_map_handle *handle,
void *buf,
offset = handle->cur->entries[handle->k];
if (!offset)
return -EFAULT;
- error = hib_submit_io(READ_SYNC, offset, buf, hb);
+ error = hib_submit_io(REQ_OP_READ, READ_SYNC, offset, buf, hb);
if (error)
return error;
if (++handle->k >= MAP_PAGE_ENTRIES) {
@@ -1508,7 +1511,8 @@ int swsusp_check(void)
if (!IS_ERR(hib_resume_bdev)) {
set_blocksize(hib_resume_bdev, PAGE_SIZE);
clear_page(swsusp_header);
- error = hib_submit_io(READ_SYNC, swsusp_resume_block,
+ error = hib_submit_io(REQ_OP_READ, READ_SYNC,
+ swsusp_resume_block,
swsusp_header, NULL);
if (error)
goto put;
@@ -1516,7 +1520,8 @@ int swsusp_check(void)
if (!memcmp(HIBERNATE_SIG, swsusp_header->sig, 10)) {
memcpy(swsusp_header->sig, swsusp_header->orig_sig, 10);
/* Reset swap signature now */
- error = hib_submit_io(WRITE_SYNC, swsusp_resume_block,
+ error = hib_submit_io(REQ_OP_WRITE, WRITE_SYNC,
+ swsusp_resume_block,
swsusp_header, NULL);
} else {
error = -EINVAL;
@@ -1560,10 +1565,12 @@ int swsusp_unmark(void)
{
int error;
- hib_submit_io(READ_SYNC, swsusp_resume_block, swsusp_header, NULL);
+ hib_submit_io(REQ_OP_READ, READ_SYNC, swsusp_resume_block,
+ swsusp_header, NULL);
if (!memcmp(HIBERNATE_SIG,swsusp_header->sig, 10)) {
memcpy(swsusp_header->sig,swsusp_header->orig_sig, 10);
- error = hib_submit_io(WRITE_SYNC, swsusp_resume_block,
+ error = hib_submit_io(REQ_OP_WRITE, WRITE_SYNC,
+ swsusp_resume_block,
swsusp_header, NULL);
} else {
printk(KERN_ERR "PM: Cannot find swsusp signature!\n");
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 19/35] dm: set bi_op to REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch has dm set the bio bi_op to a REQ_OP, and rq_flag_bits
to bi_rw.
I did some basic dm tests, but I think this patch should
be considered compile tested only. I have not tested all the
dm targets and I did not stress every code path I have touched.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
drivers/md/dm-bufio.c | 8 +++---
drivers/md/dm-crypt.c | 1 +
drivers/md/dm-io.c | 57 ++++++++++++++++++++++-------------------
drivers/md/dm-kcopyd.c | 25 +++++++++---------
drivers/md/dm-log-writes.c | 6 ++---
drivers/md/dm-log.c | 5 ++--
drivers/md/dm-raid1.c | 11 +++++---
drivers/md/dm-snap-persistent.c | 24 +++++++++--------
drivers/md/dm-thin.c | 7 ++---
drivers/md/dm.c | 1 +
include/linux/dm-io.h | 3 ++-
11 files changed, 82 insertions(+), 66 deletions(-)
diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c
index 9d3ee7f..b6055f2 100644
--- a/drivers/md/dm-bufio.c
+++ b/drivers/md/dm-bufio.c
@@ -574,7 +574,8 @@ static void use_dmio(struct dm_buffer *b, int rw, sector_t
block,
{
int r;
struct dm_io_request io_req = {
- .bi_rw = rw,
+ .bi_op = rw,
+ .bi_op_flags = 0,
.notify.fn = dmio_complete,
.notify.context = b,
.client = b->c->dm_io,
@@ -634,7 +635,7 @@ static void use_inline_bio(struct dm_buffer *b, int rw,
sector_t block,
* the dm_buffer's inline bio is local to bufio.
*/
b->bio.bi_private = end_io;
- b->bio.bi_rw = rw;
+ b->bio.bi_op = rw;
/*
* We assume that if len >= PAGE_SIZE ptr is page-aligned.
@@ -1327,7 +1328,8 @@ EXPORT_SYMBOL_GPL(dm_bufio_write_dirty_buffers);
int dm_bufio_issue_flush(struct dm_bufio_client *c)
{
struct dm_io_request io_req = {
- .bi_rw = WRITE_FLUSH,
+ .bi_op = REQ_OP_WRITE,
+ .bi_op_flags = WRITE_FLUSH,
.mem.type = DM_IO_KMEM,
.mem.ptr.addr = NULL,
.client = c->dm_io,
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 4f3cb35..70fbf11 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1136,6 +1136,7 @@ static void clone_init(struct dm_crypt_io *io, struct bio
*clone)
clone->bi_private = io;
clone->bi_end_io = crypt_endio;
clone->bi_bdev = cc->dev->bdev;
+ clone->bi_op = io->base_bio->bi_op;
clone->bi_rw = io->base_bio->bi_rw;
}
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
index 50f17e3..0f723ca 100644
--- a/drivers/md/dm-io.c
+++ b/drivers/md/dm-io.c
@@ -278,8 +278,9 @@ static void km_dp_init(struct dpages *dp, void *data)
/*-----------------------------------------------------------------
* IO routines that accept a list of pages.
*---------------------------------------------------------------*/
-static void do_region(int rw, unsigned region, struct dm_io_region *where,
- struct dpages *dp, struct io *io)
+static void do_region(int op, int op_flags, unsigned region,
+ struct dm_io_region *where, struct dpages *dp,
+ struct io *io)
{
struct bio *bio;
struct page *page;
@@ -295,24 +296,25 @@ static void do_region(int rw, unsigned region, struct
dm_io_region *where,
/*
* Reject unsupported discard and write same requests.
*/
- if (rw & REQ_DISCARD)
+ if (op == REQ_OP_DISCARD)
special_cmd_max_sectors = q->limits.max_discard_sectors;
- else if (rw & REQ_WRITE_SAME)
+ else if (op == REQ_OP_WRITE_SAME)
special_cmd_max_sectors = q->limits.max_write_same_sectors;
- if ((rw & (REQ_DISCARD | REQ_WRITE_SAME)) &&
special_cmd_max_sectors == 0) {
+ if ((op == REQ_OP_DISCARD || op == REQ_OP_WRITE_SAME) &&
+ special_cmd_max_sectors == 0) {
dec_count(io, region, -EOPNOTSUPP);
return;
}
/*
- * where->count may be zero if rw holds a flush and we need to
+ * where->count may be zero if op holds a flush and we need to
* send a zero-sized flush.
*/
do {
/*
* Allocate a suitably sized-bio.
*/
- if ((rw & REQ_DISCARD) || (rw & REQ_WRITE_SAME))
+ if ((op == REQ_OP_DISCARD) || (op == REQ_OP_WRITE_SAME))
num_bvecs = 1;
else
num_bvecs = min_t(int, BIO_MAX_PAGES,
@@ -322,14 +324,15 @@ static void do_region(int rw, unsigned region, struct
dm_io_region *where,
bio->bi_iter.bi_sector = where->sector + (where->count - remaining);
bio->bi_bdev = where->bdev;
bio->bi_end_io = endio;
- bio->bi_rw = rw;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
store_io_and_region_in_bio(bio, io, region);
- if (rw & REQ_DISCARD) {
+ if (op == REQ_OP_DISCARD) {
num_sectors = min_t(sector_t, special_cmd_max_sectors, remaining);
bio->bi_iter.bi_size = num_sectors << SECTOR_SHIFT;
remaining -= num_sectors;
- } else if (rw & REQ_WRITE_SAME) {
+ } else if (op == REQ_OP_WRITE_SAME) {
/*
* WRITE SAME only uses a single page.
*/
@@ -360,7 +363,7 @@ static void do_region(int rw, unsigned region, struct
dm_io_region *where,
} while (remaining);
}
-static void dispatch_io(int rw, unsigned int num_regions,
+static void dispatch_io(int op, int op_flags, unsigned int num_regions,
struct dm_io_region *where, struct dpages *dp,
struct io *io, int sync)
{
@@ -370,7 +373,7 @@ static void dispatch_io(int rw, unsigned int num_regions,
BUG_ON(num_regions > DM_IO_MAX_REGIONS);
if (sync)
- rw |= REQ_SYNC;
+ op_flags |= REQ_SYNC;
/*
* For multiple regions we need to be careful to rewind
@@ -378,8 +381,8 @@ static void dispatch_io(int rw, unsigned int num_regions,
*/
for (i = 0; i < num_regions; i++) {
*dp = old_pages;
- if (where[i].count || (rw & REQ_FLUSH))
- do_region(rw, i, where + i, dp, io);
+ if (where[i].count || (op_flags & REQ_FLUSH))
+ do_region(op, op_flags, i, where + i, dp, io);
}
/*
@@ -403,13 +406,13 @@ static void sync_io_complete(unsigned long error, void
*context)
}
static int sync_io(struct dm_io_client *client, unsigned int num_regions,
- struct dm_io_region *where, int rw, struct dpages *dp,
- unsigned long *error_bits)
+ struct dm_io_region *where, int op, int op_flags,
+ struct dpages *dp, unsigned long *error_bits)
{
struct io *io;
struct sync_io sio;
- if (num_regions > 1 && (rw & RW_MASK) != WRITE) {
+ if (num_regions > 1 && !op_is_write(op)) {
WARN_ON(1);
return -EIO;
}
@@ -426,7 +429,7 @@ static int sync_io(struct dm_io_client *client, unsigned int
num_regions,
io->vma_invalidate_address = dp->vma_invalidate_address;
io->vma_invalidate_size = dp->vma_invalidate_size;
- dispatch_io(rw, num_regions, where, dp, io, 1);
+ dispatch_io(op, op_flags, num_regions, where, dp, io, 1);
wait_for_completion_io(&sio.wait);
@@ -437,12 +440,12 @@ static int sync_io(struct dm_io_client *client, unsigned
int num_regions,
}
static int async_io(struct dm_io_client *client, unsigned int num_regions,
- struct dm_io_region *where, int rw, struct dpages *dp,
- io_notify_fn fn, void *context)
+ struct dm_io_region *where, int op, int op_flags,
+ struct dpages *dp, io_notify_fn fn, void *context)
{
struct io *io;
- if (num_regions > 1 && (rw & RW_MASK) != WRITE) {
+ if (num_regions > 1 && !op_is_write(op)) {
WARN_ON(1);
fn(1, context);
return -EIO;
@@ -458,7 +461,7 @@ static int async_io(struct dm_io_client *client, unsigned
int num_regions,
io->vma_invalidate_address = dp->vma_invalidate_address;
io->vma_invalidate_size = dp->vma_invalidate_size;
- dispatch_io(rw, num_regions, where, dp, io, 0);
+ dispatch_io(op, op_flags, num_regions, where, dp, io, 0);
return 0;
}
@@ -481,7 +484,7 @@ static int dp_init(struct dm_io_request *io_req, struct
dpages *dp,
case DM_IO_VMA:
flush_kernel_vmap_range(io_req->mem.ptr.vma, size);
- if ((io_req->bi_rw & RW_MASK) == READ) {
+ if (io_req->bi_op == REQ_OP_READ) {
dp->vma_invalidate_address = io_req->mem.ptr.vma;
dp->vma_invalidate_size = size;
}
@@ -519,10 +522,12 @@ int dm_io(struct dm_io_request *io_req, unsigned
num_regions,
if (!io_req->notify.fn)
return sync_io(io_req->client, num_regions, where,
- io_req->bi_rw, &dp, sync_error_bits);
+ io_req->bi_op, io_req->bi_op_flags, &dp,
+ sync_error_bits);
- return async_io(io_req->client, num_regions, where, io_req->bi_rw,
- &dp, io_req->notify.fn, io_req->notify.context);
+ return async_io(io_req->client, num_regions, where, io_req->bi_op,
+ io_req->bi_op_flags, &dp, io_req->notify.fn,
+ io_req->notify.context);
}
EXPORT_SYMBOL(dm_io);
diff --git a/drivers/md/dm-kcopyd.c b/drivers/md/dm-kcopyd.c
index 1452ed9..4182bc7d 100644
--- a/drivers/md/dm-kcopyd.c
+++ b/drivers/md/dm-kcopyd.c
@@ -465,10 +465,10 @@ static void complete_io(unsigned long error, void
*context)
io_job_finish(kc->throttle);
if (error) {
- if (job->rw & WRITE)
- job->write_err |= error;
- else
+ if (job->rw == READ)
job->read_err = 1;
+ else
+ job->write_err |= error;
if (!test_bit(DM_KCOPYD_IGNORE_ERROR, &job->flags)) {
push(&kc->complete_jobs, job);
@@ -477,13 +477,11 @@ static void complete_io(unsigned long error, void
*context)
}
}
- if (job->rw & WRITE)
- push(&kc->complete_jobs, job);
-
- else {
+ if (job->rw == READ) {
job->rw = WRITE;
push(&kc->io_jobs, job);
- }
+ } else
+ push(&kc->complete_jobs, job);
wake(kc);
}
@@ -496,7 +494,8 @@ static int run_io_job(struct kcopyd_job *job)
{
int r;
struct dm_io_request io_req = {
- .bi_rw = job->rw,
+ .bi_op = job->rw,
+ .bi_op_flags = 0,
.mem.type = DM_IO_PAGE_LIST,
.mem.ptr.pl = job->pages,
.mem.offset = 0,
@@ -550,10 +549,10 @@ static int process_jobs(struct list_head *jobs, struct
dm_kcopyd_client *kc,
if (r < 0) {
/* error this rogue job */
- if (job->rw & WRITE)
- job->write_err = (unsigned long) -1L;
- else
+ if (job->rw == READ)
job->read_err = 1;
+ else
+ job->write_err = (unsigned long) -1L;
push(&kc->complete_jobs, job);
break;
}
@@ -734,7 +733,7 @@ int dm_kcopyd_copy(struct dm_kcopyd_client *kc, struct
dm_io_region *from,
/*
* Use WRITE SAME to optimize zeroing if all dests support it.
*/
- job->rw = WRITE | REQ_WRITE_SAME;
+ job->rw = REQ_OP_WRITE_SAME;
for (i = 0; i < job->num_dests; i++)
if (!bdev_write_same(job->dests[i].bdev)) {
job->rw = WRITE;
diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c
index addcc4b..27630c5 100644
--- a/drivers/md/dm-log-writes.c
+++ b/drivers/md/dm-log-writes.c
@@ -205,7 +205,7 @@ static int write_metadata(struct log_writes_c *lc, void
*entry,
bio->bi_bdev = lc->logdev->bdev;
bio->bi_end_io = log_end_io;
bio->bi_private = lc;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
page = alloc_page(GFP_KERNEL);
if (!page) {
@@ -270,7 +270,7 @@ static int log_one_block(struct log_writes_c *lc,
bio->bi_bdev = lc->logdev->bdev;
bio->bi_end_io = log_end_io;
bio->bi_private = lc;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
for (i = 0; i < block->vec_cnt; i++) {
/*
@@ -292,7 +292,7 @@ static int log_one_block(struct log_writes_c *lc,
bio->bi_bdev = lc->logdev->bdev;
bio->bi_end_io = log_end_io;
bio->bi_private = lc;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
ret = bio_add_page(bio, block->vecs[i].bv_page,
block->vecs[i].bv_len, 0);
diff --git a/drivers/md/dm-log.c b/drivers/md/dm-log.c
index 627d191..4ca2d1d 100644
--- a/drivers/md/dm-log.c
+++ b/drivers/md/dm-log.c
@@ -293,7 +293,7 @@ static void header_from_disk(struct log_header_core *core,
struct log_header_dis
static int rw_header(struct log_c *lc, int rw)
{
- lc->io_req.bi_rw = rw;
+ lc->io_req.bi_op = rw;
return dm_io(&lc->io_req, 1, &lc->header_location, NULL);
}
@@ -306,7 +306,8 @@ static int flush_header(struct log_c *lc)
.count = 0,
};
- lc->io_req.bi_rw = WRITE_FLUSH;
+ lc->io_req.bi_op = REQ_OP_WRITE;
+ lc->io_req.bi_op_flags = WRITE_FLUSH;
return dm_io(&lc->io_req, 1, &null_location, NULL);
}
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index b3ccf1e..8a86bc3 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -260,7 +260,8 @@ static int mirror_flush(struct dm_target *ti)
struct dm_io_region io[ms->nr_mirrors];
struct mirror *m;
struct dm_io_request io_req = {
- .bi_rw = WRITE_FLUSH,
+ .bi_op = REQ_OP_WRITE,
+ .bi_op_flags = WRITE_FLUSH,
.mem.type = DM_IO_KMEM,
.mem.ptr.addr = NULL,
.client = ms->io_client,
@@ -541,7 +542,8 @@ static void read_async_bio(struct mirror *m, struct bio
*bio)
{
struct dm_io_region io;
struct dm_io_request io_req = {
- .bi_rw = READ,
+ .bi_op = REQ_OP_READ,
+ .bi_op_flags = 0,
.mem.type = DM_IO_BIO,
.mem.ptr.bio = bio,
.notify.fn = read_callback,
@@ -654,7 +656,8 @@ static void do_write(struct mirror_set *ms, struct bio *bio)
struct dm_io_region io[ms->nr_mirrors], *dest = io;
struct mirror *m;
struct dm_io_request io_req = {
- .bi_rw = WRITE | (bio->bi_rw & WRITE_FLUSH_FUA),
+ .bi_op = REQ_OP_WRITE,
+ .bi_op_flags = bio->bi_rw & WRITE_FLUSH_FUA,
.mem.type = DM_IO_BIO,
.mem.ptr.bio = bio,
.notify.fn = write_callback,
@@ -663,7 +666,7 @@ static void do_write(struct mirror_set *ms, struct bio *bio)
};
if (bio->bi_rw & REQ_DISCARD) {
- io_req.bi_rw |= REQ_DISCARD;
+ io_req.bi_op = REQ_OP_DISCARD;
io_req.mem.type = DM_IO_KMEM;
io_req.mem.ptr.addr = NULL;
}
diff --git a/drivers/md/dm-snap-persistent.c b/drivers/md/dm-snap-persistent.c
index 4d39093..b8cf956 100644
--- a/drivers/md/dm-snap-persistent.c
+++ b/drivers/md/dm-snap-persistent.c
@@ -226,8 +226,8 @@ static void do_metadata(struct work_struct *work)
/*
* Read or write a chunk aligned and sized block of data from a device.
*/
-static int chunk_io(struct pstore *ps, void *area, chunk_t chunk, int rw,
- int metadata)
+static int chunk_io(struct pstore *ps, void *area, chunk_t chunk, int op,
+ int op_flags, int metadata)
{
struct dm_io_region where = {
.bdev = dm_snap_cow(ps->store->snap)->bdev,
@@ -235,7 +235,8 @@ static int chunk_io(struct pstore *ps, void *area, chunk_t
chunk, int rw,
.count = ps->store->chunk_size,
};
struct dm_io_request io_req = {
- .bi_rw = rw,
+ .bi_op = op,
+ .bi_op_flags = op_flags,
.mem.type = DM_IO_VMA,
.mem.ptr.vma = area,
.client = ps->io_client,
@@ -281,14 +282,14 @@ static void skip_metadata(struct pstore *ps)
* Read or write a metadata area. Remembering to skip the first
* chunk which holds the header.
*/
-static int area_io(struct pstore *ps, int rw)
+static int area_io(struct pstore *ps, int op, int op_flags)
{
int r;
chunk_t chunk;
chunk = area_location(ps, ps->current_area);
- r = chunk_io(ps, ps->area, chunk, rw, 0);
+ r = chunk_io(ps, ps->area, chunk, op, op_flags, 0);
if (r)
return r;
@@ -302,7 +303,8 @@ static void zero_memory_area(struct pstore *ps)
static int zero_disk_area(struct pstore *ps, chunk_t area)
{
- return chunk_io(ps, ps->zero_area, area_location(ps, area), WRITE, 0);
+ return chunk_io(ps, ps->zero_area, area_location(ps, area),
+ REQ_OP_WRITE, 0, 0);
}
static int read_header(struct pstore *ps, int *new_snapshot)
@@ -334,7 +336,7 @@ static int read_header(struct pstore *ps, int *new_snapshot)
if (r)
return r;
- r = chunk_io(ps, ps->header_area, 0, READ, 1);
+ r = chunk_io(ps, ps->header_area, 0, REQ_OP_READ, 0, 1);
if (r)
goto bad;
@@ -395,7 +397,7 @@ static int write_header(struct pstore *ps)
dh->version = cpu_to_le32(ps->version);
dh->chunk_size = cpu_to_le32(ps->store->chunk_size);
- return chunk_io(ps, ps->header_area, 0, WRITE, 1);
+ return chunk_io(ps, ps->header_area, 0, REQ_OP_WRITE, 0, 1);
}
/*
@@ -739,7 +741,7 @@ static void persistent_commit_exception(struct
dm_exception_store *store,
/*
* Commit exceptions to disk.
*/
- if (ps->valid && area_io(ps, WRITE_FLUSH_FUA))
+ if (ps->valid && area_io(ps, REQ_OP_WRITE, WRITE_FLUSH_FUA))
ps->valid = 0;
/*
@@ -779,7 +781,7 @@ static int persistent_prepare_merge(struct
dm_exception_store *store,
return 0;
ps->current_area--;
- r = area_io(ps, READ);
+ r = area_io(ps, REQ_OP_READ, 0);
if (r < 0)
return r;
ps->current_committed = ps->exceptions_per_area;
@@ -816,7 +818,7 @@ static int persistent_commit_merge(struct dm_exception_store
*store,
for (i = 0; i < nr_merged; i++)
clear_exception(ps, ps->current_committed - 1 - i);
- r = area_io(ps, WRITE_FLUSH_FUA);
+ r = area_io(ps, REQ_OP_WRITE, WRITE_FLUSH_FUA);
if (r < 0)
return r;
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index e39ad11..6e204e0 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -338,7 +338,7 @@ static int __blkdev_issue_discard_async(struct block_device
*bdev, sector_t sect
struct bio *parent_bio)
{
struct request_queue *q = bdev_get_queue(bdev);
- int type = REQ_WRITE | REQ_DISCARD;
+ int op_flags = 0;
struct bio *bio;
if (!q || !nr_sects)
@@ -350,7 +350,7 @@ static int __blkdev_issue_discard_async(struct block_device
*bdev, sector_t sect
if (flags & BLKDEV_DISCARD_SECURE) {
if (!blk_queue_secdiscard(q))
return -EOPNOTSUPP;
- type |= REQ_SECURE;
+ op_flags |= REQ_SECURE;
}
/*
@@ -365,7 +365,8 @@ static int __blkdev_issue_discard_async(struct block_device
*bdev, sector_t sect
bio->bi_iter.bi_sector = sector;
bio->bi_bdev = bdev;
bio->bi_iter.bi_size = nr_sects << 9;
- bio->bi_rw = type;
+ bio->bi_op = REQ_OP_DISCARD;
+ bio->bi_rw = op_flags;
submit_bio(bio);
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 503988f..fe03b26 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -2399,6 +2399,7 @@ static struct mapped_device *alloc_dev(int minor)
bio_init(&md->flush_bio);
md->flush_bio.bi_bdev = md->bdev;
+ md->flush_bio.bi_op = REQ_OP_WRITE;
md->flush_bio.bi_rw = WRITE_FLUSH;
dm_stats_init(&md->stats);
diff --git a/include/linux/dm-io.h b/include/linux/dm-io.h
index a68cbe5..b91b023 100644
--- a/include/linux/dm-io.h
+++ b/include/linux/dm-io.h
@@ -57,7 +57,8 @@ struct dm_io_notify {
*/
struct dm_io_client;
struct dm_io_request {
- int bi_rw; /* READ|WRITE - not READA */
+ int bi_op; /* REQ_OP */
+ int bi_op_flags; /* rq_flag_bits */
struct dm_io_memory mem; /* Memory to use for io */
struct dm_io_notify notify; /* Synchronous if notify.fn is NULL */
struct dm_io_client *client; /* Client memory handler */
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 20/35] dm: pass dm stats data dir instead of bi_rw
From: Mike Christie <mchristi at redhat.com>
It looks like dm stats cares about the data direction
(READ vs WRITE) and does not need the bio/request flags.
Commands like REQ_FLUSH, REQ_DISCARD and REQ_WRITE_SAME
are currently always set with REQ_WRITE, so the extra check for
REQ_DISCARD in dm_stats_account_io is not needed.
This patch has it use the bio and request data_dir helpers
instead of accessing the bi_rw/cmd_flags directly. This makes
the next patches that remove the operation from the cmd_flags
and bi_rw easier, because we will no longer have the REQ_WRITE
bit set for operations like discards.
This patch is compile tested only.
v2:
1. Merged Mike Snitzer's fixes to pass in int instead of
unsigned long.
2. Fix 80 char col issues.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
drivers/md/dm-stats.c | 9 ++++-----
drivers/md/dm.c | 21 ++++++++++++---------
2 files changed, 16 insertions(+), 14 deletions(-)
diff --git a/drivers/md/dm-stats.c b/drivers/md/dm-stats.c
index 8289804..4fba26c 100644
--- a/drivers/md/dm-stats.c
+++ b/drivers/md/dm-stats.c
@@ -514,11 +514,10 @@ static void dm_stat_round(struct dm_stat *s, struct
dm_stat_shared *shared,
}
static void dm_stat_for_entry(struct dm_stat *s, size_t entry,
- unsigned long bi_rw, sector_t len,
+ int idx, sector_t len,
struct dm_stats_aux *stats_aux, bool end,
unsigned long duration_jiffies)
{
- unsigned long idx = bi_rw & REQ_WRITE;
struct dm_stat_shared *shared = &s->stat_shared[entry];
struct dm_stat_percpu *p;
@@ -584,7 +583,7 @@ static void dm_stat_for_entry(struct dm_stat *s, size_t
entry,
#endif
}
-static void __dm_stat_bio(struct dm_stat *s, unsigned long bi_rw,
+static void __dm_stat_bio(struct dm_stat *s, int bi_rw,
sector_t bi_sector, sector_t end_sector,
bool end, unsigned long duration_jiffies,
struct dm_stats_aux *stats_aux)
@@ -645,8 +644,8 @@ void dm_stats_account_io(struct dm_stats *stats, unsigned
long bi_rw,
last = raw_cpu_ptr(stats->last);
stats_aux->merged (bi_sector == (ACCESS_ONCE(last->last_sector)
&&
- ((bi_rw & (REQ_WRITE | REQ_DISCARD)) =-
(ACCESS_ONCE(last->last_rw) & (REQ_WRITE | REQ_DISCARD)))
+ ((bi_rw == WRITE) =+ (ACCESS_ONCE(last->last_rw) == WRITE))
));
ACCESS_ONCE(last->last_sector) = end_sector;
ACCESS_ONCE(last->last_rw) = bi_rw;
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index fe03b26..38c7d93 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -723,8 +723,9 @@ static void start_io_acct(struct dm_io *io)
atomic_inc_return(&md->pending[rw]));
if (unlikely(dm_stats_used(&md->stats)))
- dm_stats_account_io(&md->stats, bio->bi_rw,
bio->bi_iter.bi_sector,
- bio_sectors(bio), false, 0, &io->stats_aux);
+ dm_stats_account_io(&md->stats, bio_data_dir(bio),
+ bio->bi_iter.bi_sector, bio_sectors(bio),
+ false, 0, &io->stats_aux);
}
static void end_io_acct(struct dm_io *io)
@@ -738,8 +739,9 @@ static void end_io_acct(struct dm_io *io)
generic_end_io_acct(rw, &dm_disk(md)->part0, io->start_time);
if (unlikely(dm_stats_used(&md->stats)))
- dm_stats_account_io(&md->stats, bio->bi_rw,
bio->bi_iter.bi_sector,
- bio_sectors(bio), true, duration, &io->stats_aux);
+ dm_stats_account_io(&md->stats, bio_data_dir(bio),
+ bio->bi_iter.bi_sector, bio_sectors(bio),
+ true, duration, &io->stats_aux);
/*
* After this is decremented the bio must not be touched if it is
@@ -1121,9 +1123,9 @@ static void rq_end_stats(struct mapped_device *md, struct
request *orig)
if (unlikely(dm_stats_used(&md->stats))) {
struct dm_rq_target_io *tio = tio_from_request(orig);
tio->duration_jiffies = jiffies - tio->duration_jiffies;
- dm_stats_account_io(&md->stats, orig->cmd_flags, blk_rq_pos(orig),
- tio->n_sectors, true, tio->duration_jiffies,
- &tio->stats_aux);
+ dm_stats_account_io(&md->stats, rq_data_dir(orig),
+ blk_rq_pos(orig), tio->n_sectors, true,
+ tio->duration_jiffies, &tio->stats_aux);
}
}
@@ -2069,8 +2071,9 @@ static void dm_start_request(struct mapped_device *md,
struct request *orig)
struct dm_rq_target_io *tio = tio_from_request(orig);
tio->duration_jiffies = jiffies;
tio->n_sectors = blk_rq_sectors(orig);
- dm_stats_account_io(&md->stats, orig->cmd_flags, blk_rq_pos(orig),
- tio->n_sectors, false, 0, &tio->stats_aux);
+ dm_stats_account_io(&md->stats, rq_data_dir(orig),
+ blk_rq_pos(orig), tio->n_sectors, false, 0,
+ &tio->stats_aux);
}
/*
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 21/35] bcache: set bi_op to REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch has bcache set the bio bi_op to a REQ_OP, and rq_flag_bits
to bi_rw.
This patch is compile tested only
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
drivers/md/bcache/btree.c | 2 ++
drivers/md/bcache/debug.c | 2 ++
drivers/md/bcache/io.c | 2 +-
drivers/md/bcache/journal.c | 7 ++++---
drivers/md/bcache/movinggc.c | 2 +-
drivers/md/bcache/request.c | 9 +++++----
drivers/md/bcache/super.c | 26 +++++++++++++++-----------
drivers/md/bcache/writeback.c | 4 ++--
8 files changed, 32 insertions(+), 22 deletions(-)
diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index 22b9e34..752a44f 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -295,6 +295,7 @@ static void bch_btree_node_read(struct btree *b)
closure_init_stack(&cl);
bio = bch_bbio_alloc(b->c);
+ bio->bi_op = REQ_OP_READ;
bio->bi_rw = REQ_META|READ_SYNC;
bio->bi_iter.bi_size = KEY_SIZE(&b->key) << 9;
bio->bi_end_io = btree_node_read_endio;
@@ -397,6 +398,7 @@ static void do_btree_node_write(struct btree *b)
b->bio->bi_end_io = btree_node_write_endio;
b->bio->bi_private = cl;
+ b->bio->bi_op = REQ_OP_WRITE;
b->bio->bi_rw = REQ_META|WRITE_SYNC|REQ_FUA;
b->bio->bi_iter.bi_size = roundup(set_bytes(i), block_bytes(b->c));
bch_bio_map(b->bio, i);
diff --git a/drivers/md/bcache/debug.c b/drivers/md/bcache/debug.c
index 52b6bcf..8df9e66 100644
--- a/drivers/md/bcache/debug.c
+++ b/drivers/md/bcache/debug.c
@@ -52,6 +52,7 @@ void bch_btree_verify(struct btree *b)
bio->bi_bdev = PTR_CACHE(b->c, &b->key, 0)->bdev;
bio->bi_iter.bi_sector = PTR_OFFSET(&b->key, 0);
bio->bi_iter.bi_size = KEY_SIZE(&v->key) << 9;
+ bio->bi_op = REQ_OP_READ;
bio->bi_rw = REQ_META|READ_SYNC;
bch_bio_map(bio, sorted);
@@ -114,6 +115,7 @@ void bch_data_verify(struct cached_dev *dc, struct bio *bio)
check = bio_clone(bio, GFP_NOIO);
if (!check)
return;
+ check->bi_op = REQ_OP_READ;
check->bi_rw |= READ_SYNC;
if (bio_alloc_pages(check, GFP_NOIO))
diff --git a/drivers/md/bcache/io.c b/drivers/md/bcache/io.c
index 86a0bb8..f10a9a0 100644
--- a/drivers/md/bcache/io.c
+++ b/drivers/md/bcache/io.c
@@ -111,7 +111,7 @@ void bch_bbio_count_io_errors(struct cache_set *c, struct
bio *bio,
struct bbio *b = container_of(bio, struct bbio, bio);
struct cache *ca = PTR_CACHE(c, &b->key, 0);
- unsigned threshold = bio->bi_rw & REQ_WRITE
+ unsigned threshold = op_is_write(bio->bi_op)
? c->congested_write_threshold_us
: c->congested_read_threshold_us;
diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c
index af3f9f7..68fa0f0 100644
--- a/drivers/md/bcache/journal.c
+++ b/drivers/md/bcache/journal.c
@@ -54,7 +54,7 @@ reread: left = ca->sb.bucket_size - offset;
bio_reset(bio);
bio->bi_iter.bi_sector = bucket + offset;
bio->bi_bdev = ca->bdev;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
bio->bi_iter.bi_size = len << 9;
bio->bi_end_io = journal_read_endio;
@@ -452,7 +452,7 @@ static void do_journal_discard(struct cache *ca)
bio->bi_iter.bi_sector = bucket_to_sector(ca->set,
ca->sb.d[ja->discard_idx]);
bio->bi_bdev = ca->bdev;
- bio->bi_rw = REQ_WRITE|REQ_DISCARD;
+ bio->bi_op = REQ_OP_DISCARD;
bio->bi_max_vecs = 1;
bio->bi_io_vec = bio->bi_inline_vecs;
bio->bi_iter.bi_size = bucket_bytes(ca);
@@ -626,7 +626,8 @@ static void journal_write_unlocked(struct closure *cl)
bio_reset(bio);
bio->bi_iter.bi_sector = PTR_OFFSET(k, i);
bio->bi_bdev = ca->bdev;
- bio->bi_rw = REQ_WRITE|REQ_SYNC|REQ_META|REQ_FLUSH|REQ_FUA;
+ bio->bi_op = REQ_OP_WRITE;
+ bio->bi_rw = REQ_SYNC|REQ_META|REQ_FLUSH|REQ_FUA;
bio->bi_iter.bi_size = sectors << 9;
bio->bi_end_io = journal_write_endio;
diff --git a/drivers/md/bcache/movinggc.c b/drivers/md/bcache/movinggc.c
index b929fc9..f33860a 100644
--- a/drivers/md/bcache/movinggc.c
+++ b/drivers/md/bcache/movinggc.c
@@ -163,7 +163,7 @@ static void read_moving(struct cache_set *c)
moving_init(io);
bio = &io->bio.bio;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
bio->bi_end_io = read_moving_endio;
if (bio_alloc_pages(bio, GFP_KERNEL))
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 25fa844..cd6837c 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -253,7 +253,7 @@ static void bch_data_insert_start(struct closure *cl)
trace_bcache_cache_insert(k);
bch_keylist_push(&op->insert_keys);
- n->bi_rw |= REQ_WRITE;
+ n->bi_op = REQ_OP_WRITE;
bch_submit_bbio(n, op->c, k, 0);
} while (n != bio);
@@ -383,7 +383,7 @@ static bool check_should_bypass(struct cached_dev *dc,
struct bio *bio)
if (mode == CACHE_MODE_NONE ||
(mode == CACHE_MODE_WRITEAROUND &&
- (bio->bi_rw & REQ_WRITE)))
+ op_is_write(bio->bi_op)))
goto skip;
if (bio->bi_iter.bi_sector & (c->sb.block_size - 1) ||
@@ -404,7 +404,7 @@ static bool check_should_bypass(struct cached_dev *dc,
struct bio *bio)
if (!congested &&
mode == CACHE_MODE_WRITEBACK &&
- (bio->bi_rw & REQ_WRITE) &&
+ op_is_write(bio->bi_op) &&
(bio->bi_rw & REQ_SYNC))
goto rescale;
@@ -657,7 +657,7 @@ static inline struct search *search_alloc(struct bio *bio,
s->cache_miss = NULL;
s->d = d;
s->recoverable = 1;
- s->write = (bio->bi_rw & REQ_WRITE) != 0;
+ s->write = op_is_write(bio->bi_op);
s->read_dirty_data = 0;
s->start_time = jiffies;
@@ -925,6 +925,7 @@ static void cached_dev_write(struct cached_dev *dc, struct
search *s)
struct bio *flush = bio_alloc_bioset(GFP_NOIO, 0,
dc->disk.bio_split);
+ flush->bi_op = REQ_OP_WRITE;
flush->bi_rw = WRITE_FLUSH;
flush->bi_bdev = bio->bi_bdev;
flush->bi_end_io = request_endio;
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 9e2eac8..b11f7f4 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -212,7 +212,8 @@ static void __write_super(struct cache_sb *sb, struct bio
*bio)
unsigned i;
bio->bi_iter.bi_sector = SB_SECTOR;
- bio->bi_rw = REQ_WRITE|REQ_SYNC|REQ_META;
+ bio->bi_op = REQ_OP_WRITE;
+ bio->bi_rw = REQ_SYNC|REQ_META;
bio->bi_iter.bi_size = SB_SIZE;
bch_bio_map(bio, NULL);
@@ -333,7 +334,7 @@ static void uuid_io_unlock(struct closure *cl)
up(&c->uuid_write_mutex);
}
-static void uuid_io(struct cache_set *c, unsigned long rw,
+static void uuid_io(struct cache_set *c, int op, unsigned long op_flags,
struct bkey *k, struct closure *parent)
{
struct closure *cl = &c->uuid_write;
@@ -348,7 +349,8 @@ static void uuid_io(struct cache_set *c, unsigned long rw,
for (i = 0; i < KEY_PTRS(k); i++) {
struct bio *bio = bch_bbio_alloc(c);
- bio->bi_rw = REQ_SYNC|REQ_META|rw;
+ bio->bi_op = op;
+ bio->bi_rw = REQ_SYNC|REQ_META|op_flags;
bio->bi_iter.bi_size = KEY_SIZE(k) << 9;
bio->bi_end_io = uuid_endio;
@@ -357,12 +359,12 @@ static void uuid_io(struct cache_set *c, unsigned long rw,
bch_submit_bbio(bio, c, k, i);
- if (!(rw & WRITE))
+ if (op != REQ_OP_WRITE)
break;
}
bch_extent_to_text(buf, sizeof(buf), k);
- pr_debug("%s UUIDs at %s", rw & REQ_WRITE ? "wrote" :
"read", buf);
+ pr_debug("%s UUIDs at %s", op == REQ_OP_WRITE ? "wrote" :
"read", buf);
for (u = c->uuids; u < c->uuids + c->nr_uuids; u++)
if (!bch_is_zero(u->uuid, 16))
@@ -381,7 +383,7 @@ static char *uuid_read(struct cache_set *c, struct jset *j,
struct closure *cl)
return "bad uuid pointer";
bkey_copy(&c->uuid_bucket, k);
- uuid_io(c, READ_SYNC, k, cl);
+ uuid_io(c, REQ_OP_READ, READ_SYNC, k, cl);
if (j->version < BCACHE_JSET_VERSION_UUIDv1) {
struct uuid_entry_v0 *u0 = (void *) c->uuids;
@@ -426,7 +428,7 @@ static int __uuid_write(struct cache_set *c)
return 1;
SET_KEY_SIZE(&k.key, c->sb.bucket_size);
- uuid_io(c, REQ_WRITE, &k.key, &cl);
+ uuid_io(c, REQ_OP_WRITE, 0, &k.key, &cl);
closure_sync(&cl);
bkey_copy(&c->uuid_bucket, &k.key);
@@ -498,7 +500,8 @@ static void prio_endio(struct bio *bio)
closure_put(&ca->prio);
}
-static void prio_io(struct cache *ca, uint64_t bucket, unsigned long rw)
+static void prio_io(struct cache *ca, uint64_t bucket, int op,
+ unsigned long op_flags)
{
struct closure *cl = &ca->prio;
struct bio *bio = bch_bbio_alloc(ca->set);
@@ -507,7 +510,8 @@ static void prio_io(struct cache *ca, uint64_t bucket,
unsigned long rw)
bio->bi_iter.bi_sector = bucket * ca->sb.bucket_size;
bio->bi_bdev = ca->bdev;
- bio->bi_rw = REQ_SYNC|REQ_META|rw;
+ bio->bi_op = op;
+ bio->bi_rw = REQ_SYNC|REQ_META|op_flags;
bio->bi_iter.bi_size = bucket_bytes(ca);
bio->bi_end_io = prio_endio;
@@ -557,7 +561,7 @@ void bch_prio_write(struct cache *ca)
BUG_ON(bucket == -1);
mutex_unlock(&ca->set->bucket_lock);
- prio_io(ca, bucket, REQ_WRITE);
+ prio_io(ca, bucket, REQ_OP_WRITE, 0);
mutex_lock(&ca->set->bucket_lock);
ca->prio_buckets[i] = bucket;
@@ -599,7 +603,7 @@ static void prio_read(struct cache *ca, uint64_t bucket)
ca->prio_last_buckets[bucket_nr] = bucket;
bucket_nr++;
- prio_io(ca, bucket, READ_SYNC);
+ prio_io(ca, bucket, REQ_OP_READ, READ_SYNC);
if (p->csum != bch_crc64(&p->magic, bucket_bytes(ca) - 8))
pr_warn("bad csum reading priorities");
diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c
index b9346cd..96ddf28 100644
--- a/drivers/md/bcache/writeback.c
+++ b/drivers/md/bcache/writeback.c
@@ -183,7 +183,7 @@ static void write_dirty(struct closure *cl)
struct keybuf_key *w = io->bio.bi_private;
dirty_init(w);
- io->bio.bi_rw = WRITE;
+ io->bio.bi_op = REQ_OP_WRITE;
io->bio.bi_iter.bi_sector = KEY_START(&w->key);
io->bio.bi_bdev = io->dc->bdev;
io->bio.bi_end_io = dirty_endio;
@@ -256,7 +256,7 @@ static void read_dirty(struct cached_dev *dc)
io->bio.bi_iter.bi_sector = PTR_OFFSET(&w->key, 0);
io->bio.bi_bdev = PTR_CACHE(dc->disk.c,
&w->key, 0)->bdev;
- io->bio.bi_rw = READ;
+ io->bio.bi_op = REQ_OP_READ;
io->bio.bi_end_io = read_dirty_endio;
if (bio_alloc_pages(&io->bio, GFP_KERNEL))
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:47 UTC
[Ocfs2-devel] [PATCH 22/35] drbd: set bi_op to REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch has drbd set the bio bi_op to a REQ_OP, and rq_flag_bits
to bi_rw.
Lars and Philip, I might have split this patch up a little weird.
Thisi patch handles setting up the bio, and then patch 30
(0030-block-fs-drivers-do-not-test-bi_rw-for-REQ_OPs.patch) handles
where were check/read bio->bi_rw.
This patch is compile tested only.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
drivers/block/drbd/drbd_actlog.c | 29 ++++++++++++++++-------------
drivers/block/drbd/drbd_bitmap.c | 6 +++---
drivers/block/drbd/drbd_int.h | 4 ++--
drivers/block/drbd/drbd_main.c | 5 +++--
drivers/block/drbd/drbd_receiver.c | 37 +++++++++++++++++++++++++------------
drivers/block/drbd/drbd_worker.c | 3 ++-
6 files changed, 51 insertions(+), 33 deletions(-)
diff --git a/drivers/block/drbd/drbd_actlog.c b/drivers/block/drbd/drbd_actlog.c
index 6069e15..2fa8534 100644
--- a/drivers/block/drbd/drbd_actlog.c
+++ b/drivers/block/drbd/drbd_actlog.c
@@ -137,19 +137,19 @@ void wait_until_done_or_force_detached(struct drbd_device
*device, struct drbd_b
static int _drbd_md_sync_page_io(struct drbd_device *device,
struct drbd_backing_dev *bdev,
- sector_t sector, int rw)
+ sector_t sector, int op)
{
struct bio *bio;
/* we do all our meta data IO in aligned 4k blocks. */
const int size = 4096;
- int err;
+ int err, op_flags = 0;
device->md_io.done = 0;
device->md_io.error = -ENODEV;
- if ((rw & WRITE) && !test_bit(MD_NO_FUA, &device->flags))
- rw |= REQ_FUA | REQ_FLUSH;
- rw |= REQ_SYNC | REQ_NOIDLE;
+ if ((op == REQ_OP_WRITE) && !test_bit(MD_NO_FUA,
&device->flags))
+ op_flags |= REQ_FUA | REQ_FLUSH;
+ op_flags |= REQ_SYNC | REQ_NOIDLE;
bio = bio_alloc_drbd(GFP_NOIO);
bio->bi_bdev = bdev->md_bdev;
@@ -159,9 +159,10 @@ static int _drbd_md_sync_page_io(struct drbd_device
*device,
goto out;
bio->bi_private = device;
bio->bi_end_io = drbd_md_endio;
- bio->bi_rw = rw;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
- if (!(rw & WRITE) && device->state.disk == D_DISKLESS
&& device->ldev == NULL)
+ if (op != REQ_OP_WRITE && device->state.disk == D_DISKLESS
&& device->ldev == NULL)
/* special case, drbd_md_read() during drbd_adm_attach(): no get_ldev */
;
else if (!get_ldev_if_state(device, D_ATTACHING)) {
@@ -174,7 +175,7 @@ static int _drbd_md_sync_page_io(struct drbd_device *device,
bio_get(bio); /* one bio_put() is in the completion handler */
atomic_inc(&device->md_io.in_use); /* drbd_md_put_buffer() is in the
completion handler */
device->md_io.submit_jif = jiffies;
- if (drbd_insert_fault(device, (rw & WRITE) ? DRBD_FAULT_MD_WR :
DRBD_FAULT_MD_RD))
+ if (drbd_insert_fault(device, (op == REQ_OP_WRITE) ? DRBD_FAULT_MD_WR :
DRBD_FAULT_MD_RD))
bio_io_error(bio);
else
submit_bio(bio);
@@ -188,7 +189,7 @@ static int _drbd_md_sync_page_io(struct drbd_device *device,
}
int drbd_md_sync_page_io(struct drbd_device *device, struct drbd_backing_dev
*bdev,
- sector_t sector, int rw)
+ sector_t sector, int op)
{
int err;
D_ASSERT(device, atomic_read(&device->md_io.in_use) == 1);
@@ -197,19 +198,21 @@ int drbd_md_sync_page_io(struct drbd_device *device,
struct drbd_backing_dev *bd
dynamic_drbd_dbg(device, "meta_data io: %s [%d]:%s(,%llus,%s)
%pS\n",
current->comm, current->pid, __func__,
- (unsigned long long)sector, (rw & WRITE) ? "WRITE" :
"READ",
+ (unsigned long long)sector, (op == REQ_OP_WRITE) ? "WRITE" :
"READ",
(void*)_RET_IP_ );
if (sector < drbd_md_first_sector(bdev) ||
sector + 7 > drbd_md_last_sector(bdev))
drbd_alert(device, "%s [%d]:%s(,%llus,%s) out of range md
access!\n",
current->comm, current->pid, __func__,
- (unsigned long long)sector, (rw & WRITE) ? "WRITE" :
"READ");
+ (unsigned long long)sector,
+ (op == REQ_OP_WRITE) ? "WRITE" : "READ");
- err = _drbd_md_sync_page_io(device, bdev, sector, rw);
+ err = _drbd_md_sync_page_io(device, bdev, sector, op);
if (err) {
drbd_err(device, "drbd_md_sync_page_io(,%llus,%s) failed with error
%d\n",
- (unsigned long long)sector, (rw & WRITE) ? "WRITE" :
"READ", err);
+ (unsigned long long)sector,
+ (op == REQ_OP_WRITE) ? "WRITE" : "READ", err);
}
return err;
}
diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index e8959fe..126bf4a 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -980,7 +980,7 @@ static void bm_page_io_async(struct drbd_bm_aio_ctx *ctx,
int page_nr) __must_ho
struct drbd_bitmap *b = device->bitmap;
struct page *page;
unsigned int len;
- unsigned int rw = (ctx->flags & BM_AIO_READ) ? READ : WRITE;
+ unsigned int op = (ctx->flags & BM_AIO_READ) ? REQ_OP_READ :
REQ_OP_WRITE;
sector_t on_disk_sector device->ldev->md.md_offset +
device->ldev->md.bm_offset;
@@ -1011,9 +1011,9 @@ static void bm_page_io_async(struct drbd_bm_aio_ctx *ctx,
int page_nr) __must_ho
bio_add_page(bio, page, len, 0);
bio->bi_private = ctx;
bio->bi_end_io = drbd_bm_endio;
- bio->bi_rw = rw;
+ bio->bi_op = op;
- if (drbd_insert_fault(device, (rw & WRITE) ? DRBD_FAULT_MD_WR :
DRBD_FAULT_MD_RD)) {
+ if (drbd_insert_fault(device, (op == REQ_OP_WRITE) ? DRBD_FAULT_MD_WR :
DRBD_FAULT_MD_RD)) {
bio_io_error(bio);
} else {
submit_bio(bio);
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index c227fd4..a0ddd75 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -1507,7 +1507,7 @@ extern int drbd_resync_finished(struct drbd_device
*device);
extern void *drbd_md_get_buffer(struct drbd_device *device, const char
*intent);
extern void drbd_md_put_buffer(struct drbd_device *device);
extern int drbd_md_sync_page_io(struct drbd_device *device,
- struct drbd_backing_dev *bdev, sector_t sector, int rw);
+ struct drbd_backing_dev *bdev, sector_t sector, int op);
extern void drbd_ov_out_of_sync_found(struct drbd_device *, sector_t, int);
extern void wait_until_done_or_force_detached(struct drbd_device *device,
struct drbd_backing_dev *bdev, unsigned int *done);
@@ -1557,7 +1557,7 @@ extern bool drbd_rs_should_slow_down(struct drbd_device
*device, sector_t sector
bool throttle_if_app_is_waiting);
extern int drbd_submit_peer_request(struct drbd_device *,
struct drbd_peer_request *, const unsigned,
- const int);
+ const unsigned, const int);
extern int drbd_free_peer_reqs(struct drbd_device *, struct list_head *);
extern struct drbd_peer_request *drbd_alloc_peer_req(struct drbd_peer_device *,
u64,
sector_t, unsigned int,
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index fa20977..4ccfd17 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -3061,7 +3061,7 @@ void drbd_md_write(struct drbd_device *device, void *b)
D_ASSERT(device, drbd_md_ss(device->ldev) ==
device->ldev->md.md_offset);
sector = device->ldev->md.md_offset;
- if (drbd_md_sync_page_io(device, device->ldev, sector, WRITE)) {
+ if (drbd_md_sync_page_io(device, device->ldev, sector, REQ_OP_WRITE)) {
/* this was a try anyways ... */
drbd_err(device, "meta data update failed!\n");
drbd_chk_io_error(device, 1, DRBD_META_IO_ERROR);
@@ -3263,7 +3263,8 @@ int drbd_md_read(struct drbd_device *device, struct
drbd_backing_dev *bdev)
* Affects the paranoia out-of-range access check in drbd_md_sync_page_io().
*/
bdev->md.md_size_sect = 8;
- if (drbd_md_sync_page_io(device, bdev, bdev->md.md_offset, READ)) {
+ if (drbd_md_sync_page_io(device, bdev, bdev->md.md_offset,
+ REQ_OP_READ)) {
/* NOTE: can't do normal error processing here as this is
called BEFORE disk is attached */
drbd_err(device, "Error while reading metadata.\n");
diff --git a/drivers/block/drbd/drbd_receiver.c
b/drivers/block/drbd/drbd_receiver.c
index 050aaa1..a0b95da 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -1398,7 +1398,8 @@ void drbd_bump_write_ordering(struct drbd_resource
*resource, struct drbd_backin
/* TODO allocate from our own bio_set. */
int drbd_submit_peer_request(struct drbd_device *device,
struct drbd_peer_request *peer_req,
- const unsigned rw, const int fault_type)
+ const unsigned op, const unsigned op_flags,
+ const int fault_type)
{
struct bio *bios = NULL;
struct bio *bio;
@@ -1450,7 +1451,8 @@ next_bio:
/* > peer_req->i.sector, unless this is the first bio */
bio->bi_iter.bi_sector = sector;
bio->bi_bdev = device->ldev->backing_bdev;
- bio->bi_rw = rw;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
bio->bi_private = peer_req;
bio->bi_end_io = drbd_peer_request_endio;
@@ -1458,7 +1460,7 @@ next_bio:
bios = bio;
++n_bios;
- if (rw & REQ_DISCARD) {
+ if (op == REQ_OP_DISCARD) {
bio->bi_iter.bi_size = data_size;
goto submit;
}
@@ -1830,7 +1832,8 @@ static int recv_resync_read(struct drbd_peer_device
*peer_device, sector_t secto
spin_unlock_irq(&device->resource->req_lock);
atomic_add(pi->size >> 9, &device->rs_sect_ev);
- if (drbd_submit_peer_request(device, peer_req, WRITE, DRBD_FAULT_RS_WR) == 0)
+ if (drbd_submit_peer_request(device, peer_req, REQ_OP_WRITE, 0,
+ DRBD_FAULT_RS_WR) == 0)
return 0;
/* don't care for the reason here */
@@ -2152,12 +2155,19 @@ static int wait_for_and_update_peer_seq(struct
drbd_peer_device *peer_device, co
/* see also bio_flags_to_wire()
* DRBD_REQ_*, because we need to semantically map the flags to data packet
* flags and back. We may replicate to other kernel versions. */
-static unsigned long wire_flags_to_bio(u32 dpf)
+static unsigned long wire_flags_to_bio_flags(u32 dpf)
{
return (dpf & DP_RW_SYNC ? REQ_SYNC : 0) |
(dpf & DP_FUA ? REQ_FUA : 0) |
- (dpf & DP_FLUSH ? REQ_FLUSH : 0) |
- (dpf & DP_DISCARD ? REQ_DISCARD : 0);
+ (dpf & DP_FLUSH ? REQ_FLUSH : 0);
+}
+
+static unsigned long wire_flags_to_bio_op(u32 dpf)
+{
+ if (dpf & DP_DISCARD)
+ return REQ_OP_DISCARD;
+ else
+ return REQ_OP_WRITE;
}
static void fail_postponed_requests(struct drbd_device *device, sector_t
sector,
@@ -2303,7 +2313,7 @@ static int receive_Data(struct drbd_connection
*connection, struct packet_info *
struct drbd_peer_request *peer_req;
struct p_data *p = pi->data;
u32 peer_seq = be32_to_cpu(p->seq_num);
- int rw = WRITE;
+ int op, op_flags;
u32 dp_flags;
int err, tp;
@@ -2342,14 +2352,15 @@ static int receive_Data(struct drbd_connection
*connection, struct packet_info *
peer_req->flags |= EE_APPLICATION;
dp_flags = be32_to_cpu(p->dp_flags);
- rw |= wire_flags_to_bio(dp_flags);
+ op = wire_flags_to_bio_op(dp_flags);
+ op_flags = wire_flags_to_bio_flags(dp_flags);
if (pi->cmd == P_TRIM) {
struct request_queue *q = bdev_get_queue(device->ldev->backing_bdev);
peer_req->flags |= EE_IS_TRIM;
if (!blk_queue_discard(q))
peer_req->flags |= EE_IS_TRIM_USE_ZEROOUT;
D_ASSERT(peer_device, peer_req->i.size > 0);
- D_ASSERT(peer_device, rw & REQ_DISCARD);
+ D_ASSERT(peer_device, op == REQ_OP_DISCARD);
D_ASSERT(peer_device, peer_req->pages == NULL);
} else if (peer_req->pages == NULL) {
D_ASSERT(device, peer_req->i.size == 0);
@@ -2433,7 +2444,8 @@ static int receive_Data(struct drbd_connection
*connection, struct packet_info *
peer_req->flags |= EE_CALL_AL_COMPLETE_IO;
}
- err = drbd_submit_peer_request(device, peer_req, rw, DRBD_FAULT_DT_WR);
+ err = drbd_submit_peer_request(device, peer_req, op, op_flags,
+ DRBD_FAULT_DT_WR);
if (!err)
return 0;
@@ -2723,7 +2735,8 @@ submit_for_resync:
submit:
update_receiver_timing_details(connection, drbd_submit_peer_request);
inc_unacked(device);
- if (drbd_submit_peer_request(device, peer_req, READ, fault_type) == 0)
+ if (drbd_submit_peer_request(device, peer_req, REQ_OP_READ, 0,
+ fault_type) == 0)
return 0;
/* don't care for the reason here */
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index 4d87499..2a04b43 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -397,7 +397,8 @@ static int read_for_csum(struct drbd_peer_device
*peer_device, sector_t sector,
spin_unlock_irq(&device->resource->req_lock);
atomic_add(size >> 9, &device->rs_sect_ev);
- if (drbd_submit_peer_request(device, peer_req, READ, DRBD_FAULT_RS_RD) == 0)
+ if (drbd_submit_peer_request(device, peer_req, REQ_OP_READ, 0,
+ DRBD_FAULT_RS_RD) == 0)
return 0;
/* If it failed because of ENOMEM, retry should help. If it failed
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:48 UTC
[Ocfs2-devel] [PATCH 23/35] md/raid: set bi_op to REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch has md/raid set the bio bi_op to a REQ_OP, and
rq_flag_bits to bi_rw.
This patch is compile tested only.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
drivers/md/bitmap.c | 2 +-
drivers/md/dm-raid.c | 5 +++--
drivers/md/md.c | 11 +++++++----
drivers/md/md.h | 3 ++-
drivers/md/raid1.c | 34 ++++++++++++++++----------------
drivers/md/raid10.c | 50 ++++++++++++++++++++++++++----------------------
drivers/md/raid5-cache.c | 25 +++++++++++++++---------
drivers/md/raid5.c | 48 ++++++++++++++++++++++++++--------------------
8 files changed, 101 insertions(+), 77 deletions(-)
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index c8e4124..6c241f8 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -160,7 +160,7 @@ static int read_sb_page(struct mddev *mddev, loff_t offset,
if (sync_page_io(rdev, target,
roundup(size, bdev_logical_block_size(rdev->bdev)),
- page, READ, true)) {
+ page, REQ_OP_READ, 0, true)) {
page->index = index;
return 0;
}
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index a090121..43a749c 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -792,7 +792,7 @@ static int read_disk_sb(struct md_rdev *rdev, int size)
if (rdev->sb_loaded)
return 0;
- if (!sync_page_io(rdev, 0, size, rdev->sb_page, READ, 1)) {
+ if (!sync_page_io(rdev, 0, size, rdev->sb_page, REQ_OP_READ, 0, 1)) {
DMERR("Failed to read superblock of device at position %d",
rdev->raid_disk);
md_error(rdev->mddev, rdev);
@@ -1646,7 +1646,8 @@ static void attempt_restore_of_faulty_devices(struct
raid_set *rs)
for (i = 0; i < rs->md.raid_disks; i++) {
r = &rs->dev[i].rdev;
if (test_bit(Faulty, &r->flags) && r->sb_page &&
- sync_page_io(r, 0, r->sb_size, r->sb_page, READ, 1)) {
+ sync_page_io(r, 0, r->sb_size, r->sb_page, REQ_OP_READ, 0,
+ 1)) {
DMINFO("Faulty %s device #%d has readable super block."
" Attempting to revive it.",
rs->raid_type->name, i);
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 6f6102e..8cdd37f 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -391,6 +391,7 @@ static void submit_flushes(struct work_struct *ws)
bi->bi_end_io = md_end_flush;
bi->bi_private = rdev;
bi->bi_bdev = rdev->bdev;
+ bi->bi_op = REQ_OP_WRITE;
bi->bi_rw = WRITE_FLUSH;
atomic_inc(&mddev->flush_pending);
submit_bio(bi);
@@ -737,6 +738,7 @@ void md_super_write(struct mddev *mddev, struct md_rdev
*rdev,
bio_add_page(bio, page, size, 0);
bio->bi_private = rdev;
bio->bi_end_io = super_written;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_rw = WRITE_FLUSH_FUA;
atomic_inc(&mddev->pending_writes);
@@ -750,14 +752,15 @@ void md_super_wait(struct mddev *mddev)
}
int sync_page_io(struct md_rdev *rdev, sector_t sector, int size,
- struct page *page, int rw, bool metadata_op)
+ struct page *page, int op, int op_flags, bool metadata_op)
{
struct bio *bio = bio_alloc_mddev(GFP_NOIO, 1, rdev->mddev);
int ret;
bio->bi_bdev = (metadata_op && rdev->meta_bdev) ?
rdev->meta_bdev : rdev->bdev;
- bio->bi_rw = rw;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
if (metadata_op)
bio->bi_iter.bi_sector = sector + rdev->sb_start;
else if (rdev->mddev->reshape_position != MaxSector &&
@@ -783,7 +786,7 @@ static int read_disk_sb(struct md_rdev *rdev, int size)
if (rdev->sb_loaded)
return 0;
- if (!sync_page_io(rdev, 0, size, rdev->sb_page, READ, true))
+ if (!sync_page_io(rdev, 0, size, rdev->sb_page, REQ_OP_READ, 0, true))
goto fail;
rdev->sb_loaded = 1;
return 0;
@@ -1469,7 +1472,7 @@ static int super_1_load(struct md_rdev *rdev, struct
md_rdev *refdev, int minor_
return -EINVAL;
bb_sector = (long long)offset;
if (!sync_page_io(rdev, bb_sector, sectors << 9,
- rdev->bb_page, READ, true))
+ rdev->bb_page, REQ_OP_READ, 0, true))
return -EIO;
bbp = (u64 *)page_address(rdev->bb_page);
rdev->badblocks.shift = sb->bblog_shift;
diff --git a/drivers/md/md.h b/drivers/md/md.h
index b5c4be7..2e0918f 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -618,7 +618,8 @@ extern void md_super_write(struct mddev *mddev, struct
md_rdev *rdev,
sector_t sector, int size, struct page *page);
extern void md_super_wait(struct mddev *mddev);
extern int sync_page_io(struct md_rdev *rdev, sector_t sector, int size,
- struct page *page, int rw, bool metadata_op);
+ struct page *page, int op, int op_flags,
+ bool metadata_op);
extern void md_do_sync(struct md_thread *thread);
extern void md_new_event(struct mddev *mddev);
extern int md_allow_write(struct mddev *mddev);
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index f2d9c01..150df76 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -759,7 +759,7 @@ static void flush_pending_writes(struct r1conf *conf)
while (bio) { /* submit pending writes */
struct bio *next = bio->bi_next;
bio->bi_next = NULL;
- if (unlikely((bio->bi_rw & REQ_DISCARD) &&
+ if (unlikely((bio->bi_op == REQ_OP_DISCARD) &&
!blk_queue_discard(bdev_get_queue(bio->bi_bdev))))
/* Just ignore it */
bio_endio(bio);
@@ -1033,7 +1033,7 @@ static void raid1_unplug(struct blk_plug_cb *cb, bool
from_schedule)
while (bio) { /* submit pending writes */
struct bio *next = bio->bi_next;
bio->bi_next = NULL;
- if (unlikely((bio->bi_rw & REQ_DISCARD) &&
+ if (unlikely((bio->bi_op == REQ_OP_DISCARD) &&
!blk_queue_discard(bdev_get_queue(bio->bi_bdev))))
/* Just ignore it */
bio_endio(bio);
@@ -1053,12 +1053,11 @@ static void raid1_make_request(struct mddev *mddev,
struct bio * bio)
int i, disks;
struct bitmap *bitmap;
unsigned long flags;
+ const int op = bio->bi_op;
const int rw = bio_data_dir(bio);
const unsigned long do_sync = (bio->bi_rw & REQ_SYNC);
const unsigned long do_flush_fua = (bio->bi_rw & (REQ_FLUSH |
REQ_FUA));
- const unsigned long do_discard = (bio->bi_rw
- & (REQ_DISCARD | REQ_SECURE));
- const unsigned long do_same = (bio->bi_rw & REQ_WRITE_SAME);
+ const unsigned long do_sec = (bio->bi_rw & REQ_SECURE);
struct md_rdev *blocked_rdev;
struct blk_plug_cb *cb;
struct raid1_plug_cb *plug = NULL;
@@ -1166,7 +1165,8 @@ read_again:
mirror->rdev->data_offset;
read_bio->bi_bdev = mirror->rdev->bdev;
read_bio->bi_end_io = raid1_end_read_request;
- read_bio->bi_rw = READ | do_sync;
+ read_bio->bi_op = op;
+ read_bio->bi_rw = do_sync;
read_bio->bi_private = r1_bio;
if (max_sectors < r1_bio->sectors) {
@@ -1376,8 +1376,9 @@ read_again:
conf->mirrors[i].rdev->data_offset);
mbio->bi_bdev = conf->mirrors[i].rdev->bdev;
mbio->bi_end_io = raid1_end_write_request;
+ mbio->bi_op = op;
mbio->bi_rw - WRITE | do_flush_fua | do_sync | do_discard | do_same;
+ do_flush_fua | do_sync | do_sec;
mbio->bi_private = r1_bio;
atomic_inc(&r1_bio->remaining);
@@ -1771,7 +1772,7 @@ static void end_sync_write(struct bio *bio)
static int r1_sync_page_io(struct md_rdev *rdev, sector_t sector,
int sectors, struct page *page, int rw)
{
- if (sync_page_io(rdev, sector, sectors << 9, page, rw, false))
+ if (sync_page_io(rdev, sector, sectors << 9, page, rw, 0, false))
/* success */
return 1;
if (rw == WRITE) {
@@ -1825,7 +1826,7 @@ static int fix_sync_read_error(struct r1bio *r1_bio)
rdev = conf->mirrors[d].rdev;
if (sync_page_io(rdev, sect, s<<9,
bio->bi_io_vec[idx].bv_page,
- READ, false)) {
+ REQ_OP_READ, 0, false)) {
success = 1;
break;
}
@@ -2030,7 +2031,7 @@ static void sync_request_write(struct mddev *mddev, struct
r1bio *r1_bio)
!test_bit(MD_RECOVERY_SYNC, &mddev->recovery))))
continue;
- wbio->bi_rw = WRITE;
+ wbio->bi_op = REQ_OP_WRITE;
wbio->bi_end_io = end_sync_write;
atomic_inc(&r1_bio->remaining);
md_sync_acct(conf->mirrors[i].rdev->bdev, bio_sectors(wbio));
@@ -2090,7 +2091,7 @@ static void fix_read_error(struct r1conf *conf, int
read_disk,
is_badblock(rdev, sect, s,
&first_bad, &bad_sectors) == 0 &&
sync_page_io(rdev, sect, s<<9,
- conf->tmppage, READ, false))
+ conf->tmppage, REQ_OP_READ, 0, false))
success = 1;
else {
d++;
@@ -2201,7 +2202,7 @@ static int narrow_write_error(struct r1bio *r1_bio, int i)
wbio = bio_clone_mddev(r1_bio->master_bio, GFP_NOIO, mddev);
}
- wbio->bi_rw = WRITE;
+ wbio->bi_op = REQ_OP_WRITE;
wbio->bi_iter.bi_sector = r1_bio->sector;
wbio->bi_iter.bi_size = r1_bio->sectors << 9;
@@ -2343,7 +2344,8 @@ read_more:
bio->bi_iter.bi_sector = r1_bio->sector + rdev->data_offset;
bio->bi_bdev = rdev->bdev;
bio->bi_end_io = raid1_end_read_request;
- bio->bi_rw = READ | do_sync;
+ bio->bi_op = REQ_OP_READ;
+ bio->bi_rw = do_sync;
bio->bi_private = r1_bio;
if (max_sectors < r1_bio->sectors) {
/* Drat - have to split this up more */
@@ -2569,7 +2571,7 @@ static sector_t raid1_sync_request(struct mddev *mddev,
sector_t sector_nr,
if (i < conf->raid_disks)
still_degraded = 1;
} else if (!test_bit(In_sync, &rdev->flags)) {
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_end_io = end_sync_write;
write_targets ++;
} else {
@@ -2596,7 +2598,7 @@ static sector_t raid1_sync_request(struct mddev *mddev,
sector_t sector_nr,
if (disk < 0)
disk = i;
}
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
bio->bi_end_io = end_sync_read;
read_targets++;
} else if (!test_bit(WriteErrorSeen, &rdev->flags) &&
@@ -2608,7 +2610,7 @@ static sector_t raid1_sync_request(struct mddev *mddev,
sector_t sector_nr,
* if we are doing resync or repair. Otherwise, leave
* this device alone for this sync request.
*/
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_end_io = end_sync_write;
write_targets++;
}
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index d0d84f3..871edf6 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -865,7 +865,7 @@ static void flush_pending_writes(struct r10conf *conf)
while (bio) { /* submit pending writes */
struct bio *next = bio->bi_next;
bio->bi_next = NULL;
- if (unlikely((bio->bi_rw & REQ_DISCARD) &&
+ if (unlikely((bio->bi_op == REQ_OP_DISCARD) &&
!blk_queue_discard(bdev_get_queue(bio->bi_bdev))))
/* Just ignore it */
bio_endio(bio);
@@ -1041,7 +1041,7 @@ static void raid10_unplug(struct blk_plug_cb *cb, bool
from_schedule)
while (bio) { /* submit pending writes */
struct bio *next = bio->bi_next;
bio->bi_next = NULL;
- if (unlikely((bio->bi_rw & REQ_DISCARD) &&
+ if (unlikely((bio->bi_op == REQ_OP_DISCARD) &&
!blk_queue_discard(bdev_get_queue(bio->bi_bdev))))
/* Just ignore it */
bio_endio(bio);
@@ -1058,12 +1058,11 @@ static void __make_request(struct mddev *mddev, struct
bio *bio)
struct r10bio *r10_bio;
struct bio *read_bio;
int i;
+ const int op = bio->bi_op;
const int rw = bio_data_dir(bio);
const unsigned long do_sync = (bio->bi_rw & REQ_SYNC);
const unsigned long do_fua = (bio->bi_rw & REQ_FUA);
- const unsigned long do_discard = (bio->bi_rw
- & (REQ_DISCARD | REQ_SECURE));
- const unsigned long do_same = (bio->bi_rw & REQ_WRITE_SAME);
+ const unsigned long do_sec = (bio->bi_rw & REQ_SECURE);
unsigned long flags;
struct md_rdev *blocked_rdev;
struct blk_plug_cb *cb;
@@ -1156,7 +1155,8 @@ read_again:
choose_data_offset(r10_bio, rdev);
read_bio->bi_bdev = rdev->bdev;
read_bio->bi_end_io = raid10_end_read_request;
- read_bio->bi_rw = READ | do_sync;
+ read_bio->bi_op = op;
+ read_bio->bi_rw = do_sync;
read_bio->bi_private = r10_bio;
if (max_sectors < r10_bio->sectors) {
@@ -1363,8 +1363,9 @@ retry_write:
rdev));
mbio->bi_bdev = rdev->bdev;
mbio->bi_end_io = raid10_end_write_request;
+ mbio->bi_op = op;
mbio->bi_rw - WRITE | do_sync | do_fua | do_discard | do_same;
+ do_sync | do_fua | do_sec;
mbio->bi_private = r10_bio;
atomic_inc(&r10_bio->remaining);
@@ -1406,8 +1407,9 @@ retry_write:
r10_bio, rdev));
mbio->bi_bdev = rdev->bdev;
mbio->bi_end_io = raid10_end_write_request;
+ mbio->bi_op = op;
mbio->bi_rw - WRITE | do_sync | do_fua | do_discard | do_same;
+ do_sync | do_fua | do_sec;
mbio->bi_private = r10_bio;
atomic_inc(&r10_bio->remaining);
@@ -1992,7 +1994,7 @@ static void sync_request_write(struct mddev *mddev, struct
r10bio *r10_bio)
tbio->bi_vcnt = vcnt;
tbio->bi_iter.bi_size = fbio->bi_iter.bi_size;
- tbio->bi_rw = WRITE;
+ tbio->bi_op = REQ_OP_WRITE;
tbio->bi_private = r10_bio;
tbio->bi_iter.bi_sector = r10_bio->devs[i].addr;
tbio->bi_end_io = end_sync_write;
@@ -2078,7 +2080,7 @@ static void fix_recovery_read_error(struct r10bio
*r10_bio)
addr,
s << 9,
bio->bi_io_vec[idx].bv_page,
- READ, false);
+ REQ_OP_READ, 0, false);
if (ok) {
rdev = conf->mirrors[dw].rdev;
addr = r10_bio->devs[1].addr + sect;
@@ -2086,7 +2088,7 @@ static void fix_recovery_read_error(struct r10bio
*r10_bio)
addr,
s << 9,
bio->bi_io_vec[idx].bv_page,
- WRITE, false);
+ REQ_OP_WRITE, 0, false);
if (!ok) {
set_bit(WriteErrorSeen, &rdev->flags);
if (!test_and_set_bit(WantReplacement,
@@ -2213,7 +2215,7 @@ static int r10_sync_page_io(struct md_rdev *rdev, sector_t
sector,
if (is_badblock(rdev, sector, sectors, &first_bad, &bad_sectors)
&& (rw == READ || test_bit(WriteErrorSeen, &rdev->flags)))
return -1;
- if (sync_page_io(rdev, sector, sectors << 9, page, rw, false))
+ if (sync_page_io(rdev, sector, sectors << 9, page, rw, 0, false))
/* success */
return 1;
if (rw == WRITE) {
@@ -2299,7 +2301,8 @@ static void fix_read_error(struct r10conf *conf, struct
mddev *mddev, struct r10
r10_bio->devs[sl].addr +
sect,
s<<9,
- conf->tmppage, READ, false);
+ conf->tmppage,
+ REQ_OP_READ, 0, false);
rdev_dec_pending(rdev, mddev);
rcu_read_lock();
if (success)
@@ -2474,7 +2477,7 @@ static int narrow_write_error(struct r10bio *r10_bio, int
i)
choose_data_offset(r10_bio, rdev) +
(sector - r10_bio->sector));
wbio->bi_bdev = rdev->bdev;
- wbio->bi_rw = WRITE;
+ wbio->bi_op = REQ_OP_WRITE;
if (submit_bio_wait(wbio) < 0)
/* Failure! */
@@ -2550,7 +2553,8 @@ read_more:
bio->bi_iter.bi_sector = r10_bio->devs[slot].addr
+ choose_data_offset(r10_bio, rdev);
bio->bi_bdev = rdev->bdev;
- bio->bi_rw = READ | do_sync;
+ bio->bi_op = REQ_OP_READ;
+ bio->bi_rw = do_sync;
bio->bi_private = r10_bio;
bio->bi_end_io = raid10_end_read_request;
if (max_sectors < r10_bio->sectors) {
@@ -3037,7 +3041,7 @@ static sector_t raid10_sync_request(struct mddev *mddev,
sector_t sector_nr,
biolist = bio;
bio->bi_private = r10_bio;
bio->bi_end_io = end_sync_read;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
from_addr = r10_bio->devs[j].addr;
bio->bi_iter.bi_sector = from_addr +
rdev->data_offset;
@@ -3063,7 +3067,7 @@ static sector_t raid10_sync_request(struct mddev *mddev,
sector_t sector_nr,
biolist = bio;
bio->bi_private = r10_bio;
bio->bi_end_io = end_sync_write;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_iter.bi_sector = to_addr
+ rdev->data_offset;
bio->bi_bdev = rdev->bdev;
@@ -3092,7 +3096,7 @@ static sector_t raid10_sync_request(struct mddev *mddev,
sector_t sector_nr,
biolist = bio;
bio->bi_private = r10_bio;
bio->bi_end_io = end_sync_write;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_iter.bi_sector = to_addr +
rdev->data_offset;
bio->bi_bdev = rdev->bdev;
@@ -3212,7 +3216,7 @@ static sector_t raid10_sync_request(struct mddev *mddev,
sector_t sector_nr,
biolist = bio;
bio->bi_private = r10_bio;
bio->bi_end_io = end_sync_read;
- bio->bi_rw = READ;
+ bio->bi_op = REQ_OP_READ;
bio->bi_iter.bi_sector = sector +
conf->mirrors[d].rdev->data_offset;
bio->bi_bdev = conf->mirrors[d].rdev->bdev;
@@ -3234,7 +3238,7 @@ static sector_t raid10_sync_request(struct mddev *mddev,
sector_t sector_nr,
biolist = bio;
bio->bi_private = r10_bio;
bio->bi_end_io = end_sync_write;
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_iter.bi_sector = sector +
conf->mirrors[d].replacement->data_offset;
bio->bi_bdev = conf->mirrors[d].replacement->bdev;
@@ -4317,7 +4321,7 @@ read_more:
+ rdev->data_offset);
read_bio->bi_private = r10_bio;
read_bio->bi_end_io = end_sync_read;
- read_bio->bi_rw = READ;
+ read_bio->bi_op = REQ_OP_READ;
read_bio->bi_flags &= (~0UL << BIO_RESET_BITS);
read_bio->bi_error = 0;
read_bio->bi_vcnt = 0;
@@ -4351,7 +4355,7 @@ read_more:
rdev2->new_data_offset;
b->bi_private = r10_bio;
b->bi_end_io = end_reshape_write;
- b->bi_rw = WRITE;
+ b->bi_op = REQ_OP_WRITE;
b->bi_next = blist;
blist = b;
}
@@ -4519,7 +4523,7 @@ static int handle_reshape_read_error(struct mddev *mddev,
addr,
s << 9,
bvec[idx].bv_page,
- READ, false);
+ REQ_OP_READ, 0, false);
if (success)
break;
failed:
diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index 2d56fdc..da07670 100644
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -261,7 +261,7 @@ static struct bio *r5l_bio_alloc(struct r5l_log *log)
{
struct bio *bio = bio_alloc_bioset(GFP_NOIO, BIO_MAX_PAGES, log->bs);
- bio->bi_rw = WRITE;
+ bio->bi_op = REQ_OP_WRITE;
bio->bi_bdev = log->rdev->bdev;
bio->bi_iter.bi_sector = log->rdev->data_offset + log->log_start;
@@ -686,6 +686,7 @@ void r5l_flush_stripe_to_raid(struct r5l_log *log)
bio_reset(&log->flush_bio);
log->flush_bio.bi_bdev = log->rdev->bdev;
log->flush_bio.bi_end_io = r5l_log_flush_endio;
+ log->flush_bio.bi_op = REQ_OP_WRITE;
log->flush_bio.bi_rw = WRITE_FLUSH;
submit_bio(&log->flush_bio);
}
@@ -882,7 +883,8 @@ static int r5l_read_meta_block(struct r5l_log *log,
struct r5l_meta_block *mb;
u32 crc, stored_crc;
- if (!sync_page_io(log->rdev, ctx->pos, PAGE_SIZE, page, READ, false))
+ if (!sync_page_io(log->rdev, ctx->pos, PAGE_SIZE, page, REQ_OP_READ, 0,
+ false))
return -EIO;
mb = page_address(page);
@@ -927,7 +929,8 @@ static int r5l_recovery_flush_one_stripe(struct r5l_log
*log,
&disk_index, sh);
sync_page_io(log->rdev, *log_offset, PAGE_SIZE,
- sh->dev[disk_index].page, READ, false);
+ sh->dev[disk_index].page, REQ_OP_READ, 0,
+ false);
sh->dev[disk_index].log_checksum
le32_to_cpu(payload->checksum[0]);
set_bit(R5_Wantwrite, &sh->dev[disk_index].flags);
@@ -935,7 +938,8 @@ static int r5l_recovery_flush_one_stripe(struct r5l_log
*log,
} else {
disk_index = sh->pd_idx;
sync_page_io(log->rdev, *log_offset, PAGE_SIZE,
- sh->dev[disk_index].page, READ, false);
+ sh->dev[disk_index].page, REQ_OP_READ, 0,
+ false);
sh->dev[disk_index].log_checksum
le32_to_cpu(payload->checksum[0]);
set_bit(R5_Wantwrite, &sh->dev[disk_index].flags);
@@ -945,7 +949,7 @@ static int r5l_recovery_flush_one_stripe(struct r5l_log
*log,
sync_page_io(log->rdev,
r5l_ring_add(log, *log_offset, BLOCK_SECTORS),
PAGE_SIZE, sh->dev[disk_index].page,
- READ, false);
+ REQ_OP_READ, 0, false);
sh->dev[disk_index].log_checksum
le32_to_cpu(payload->checksum[1]);
set_bit(R5_Wantwrite,
@@ -987,11 +991,13 @@ static int r5l_recovery_flush_one_stripe(struct r5l_log
*log,
rdev = rcu_dereference(conf->disks[disk_index].rdev);
if (rdev)
sync_page_io(rdev, stripe_sect, PAGE_SIZE,
- sh->dev[disk_index].page, WRITE, false);
+ sh->dev[disk_index].page, REQ_OP_WRITE, 0,
+ false);
rrdev = rcu_dereference(conf->disks[disk_index].replacement);
if (rrdev)
sync_page_io(rrdev, stripe_sect, PAGE_SIZE,
- sh->dev[disk_index].page, WRITE, false);
+ sh->dev[disk_index].page, REQ_OP_WRITE, 0,
+ false);
}
raid5_release_stripe(sh);
return 0;
@@ -1063,7 +1069,8 @@ static int r5l_log_write_empty_meta_block(struct r5l_log
*log, sector_t pos,
crc = crc32c_le(log->uuid_checksum, mb, PAGE_SIZE);
mb->checksum = cpu_to_le32(crc);
- if (!sync_page_io(log->rdev, pos, PAGE_SIZE, page, WRITE_FUA, false)) {
+ if (!sync_page_io(log->rdev, pos, PAGE_SIZE, page, REQ_OP_WRITE,
+ WRITE_FUA, false)) {
__free_page(page);
return -EIO;
}
@@ -1138,7 +1145,7 @@ static int r5l_load_log(struct r5l_log *log)
if (!page)
return -ENOMEM;
- if (!sync_page_io(rdev, cp, PAGE_SIZE, page, READ, false)) {
+ if (!sync_page_io(rdev, cp, PAGE_SIZE, page, REQ_OP_READ, 0, false)) {
ret = -EIO;
goto ioerr;
}
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 7f770b0..0c53ca2 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -815,7 +815,8 @@ static void stripe_add_to_batch_list(struct r5conf *conf,
struct stripe_head *sh
dd_idx = 0;
while (dd_idx == sh->pd_idx || dd_idx == sh->qd_idx)
dd_idx++;
- if (head->dev[dd_idx].towrite->bi_rw !=
sh->dev[dd_idx].towrite->bi_rw)
+ if (head->dev[dd_idx].towrite->bi_rw !=
sh->dev[dd_idx].towrite->bi_rw ||
+ head->dev[dd_idx].towrite->bi_op !=
sh->dev[dd_idx].towrite->bi_op)
goto unlock_out;
if (head->batch_head) {
@@ -900,29 +901,32 @@ static void ops_run_io(struct stripe_head *sh, struct
stripe_head_state *s)
if (r5l_write_stripe(conf->log, sh) == 0)
return;
for (i = disks; i--; ) {
- int rw;
+ int op;
+ int op_flags = 0;
int replace_only = 0;
struct bio *bi, *rbi;
struct md_rdev *rdev, *rrdev = NULL;
sh = head_sh;
if (test_and_clear_bit(R5_Wantwrite, &sh->dev[i].flags)) {
- if (test_and_clear_bit(R5_WantFUA, &sh->dev[i].flags))
- rw = WRITE_FUA;
- else
- rw = WRITE;
+ if (test_and_clear_bit(R5_WantFUA, &sh->dev[i].flags)) {
+ op = REQ_OP_WRITE;
+ op_flags = WRITE_FUA;
+ } else {
+ op = REQ_OP_WRITE;
+ }
if (test_bit(R5_Discard, &sh->dev[i].flags))
- rw |= REQ_DISCARD;
+ op = REQ_OP_DISCARD;
} else if (test_and_clear_bit(R5_Wantread, &sh->dev[i].flags))
- rw = READ;
+ op = REQ_OP_READ;
else if (test_and_clear_bit(R5_WantReplace,
&sh->dev[i].flags)) {
- rw = WRITE;
+ op = REQ_OP_WRITE;
replace_only = 1;
} else
continue;
if (test_and_clear_bit(R5_SyncIO, &sh->dev[i].flags))
- rw |= REQ_SYNC;
+ op_flags |= REQ_SYNC;
again:
bi = &sh->dev[i].req;
@@ -936,7 +940,7 @@ again:
rdev = rrdev;
rrdev = NULL;
}
- if (rw & WRITE) {
+ if (op_is_write(op)) {
if (replace_only)
rdev = NULL;
if (rdev == rrdev)
@@ -962,7 +966,7 @@ again:
* need to check for writes. We never accept write errors
* on the replacement, so we don't to check rrdev.
*/
- while ((rw & WRITE) && rdev &&
+ while (op_is_write(op) && rdev &&
test_bit(WriteErrorSeen, &rdev->flags)) {
sector_t first_bad;
int bad_sectors;
@@ -1004,8 +1008,9 @@ again:
bio_reset(bi);
bi->bi_bdev = rdev->bdev;
- bi->bi_rw = rw;
- bi->bi_end_io = (rw & WRITE)
+ bi->bi_op = op;
+ bi->bi_rw = op_flags;
+ bi->bi_end_io = op_is_write(op)
? raid5_end_write_request
: raid5_end_read_request;
bi->bi_private = sh;
@@ -1036,7 +1041,7 @@ again:
* If this is discard request, set bi_vcnt 0. We don't
* want to confuse SCSI because SCSI will replace payload
*/
- if (rw & REQ_DISCARD)
+ if (op == REQ_OP_DISCARD)
bi->bi_vcnt = 0;
if (rrdev)
set_bit(R5_DOUBLE_LOCKED, &sh->dev[i].flags);
@@ -1056,8 +1061,9 @@ again:
bio_reset(rbi);
rbi->bi_bdev = rrdev->bdev;
- rbi->bi_rw = rw;
- BUG_ON(!(rw & WRITE));
+ rbi->bi_op = op;
+ rbi->bi_rw = op_flags;
+ BUG_ON(!op_is_write(op));
rbi->bi_end_io = raid5_end_write_request;
rbi->bi_private = sh;
@@ -1085,7 +1091,7 @@ again:
* If this is discard request, set bi_vcnt 0. We don't
* want to confuse SCSI because SCSI will replace payload
*/
- if (rw & REQ_DISCARD)
+ if (op == REQ_OP_DISCARD)
rbi->bi_vcnt = 0;
if (conf->mddev->gendisk)
trace_block_bio_remap(bdev_get_queue(rbi->bi_bdev),
@@ -1094,7 +1100,7 @@ again:
generic_make_request(rbi);
}
if (!rdev && !rrdev) {
- if (rw & WRITE)
+ if (op_is_write(op))
set_bit(STRIPE_DEGRADED, &sh->state);
pr_debug("skip op %ld on disc %d for sector %llu\n",
bi->bi_rw, i, (unsigned long long)sh->sector);
@@ -1632,7 +1638,7 @@ again:
set_bit(R5_WantFUA, &dev->flags);
if (wbi->bi_rw & REQ_SYNC)
set_bit(R5_SyncIO, &dev->flags);
- if (wbi->bi_rw & REQ_DISCARD)
+ if (wbi->bi_op == REQ_OP_DISCARD)
set_bit(R5_Discard, &dev->flags);
else {
tx = async_copy_data(1, wbi, &dev->page,
@@ -5173,7 +5179,7 @@ static void raid5_make_request(struct mddev *mddev, struct
bio * bi)
return;
}
- if (unlikely(bi->bi_rw & REQ_DISCARD)) {
+ if (unlikely(bi->bi_op == REQ_OP_DISCARD)) {
make_discard_request(mddev, bi);
return;
}
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:48 UTC
[Ocfs2-devel] [PATCH 24/35] xen: set bi_op to REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch has xen set the bio bi_op to a REQ_OP, and rq_flag_bits
to bi_rw.
This patch is compile tested only.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
drivers/block/xen-blkback/blkback.c | 29 +++++++++++++++++------------
1 file changed, 17 insertions(+), 12 deletions(-)
diff --git a/drivers/block/xen-blkback/blkback.c
b/drivers/block/xen-blkback/blkback.c
index 79fe493..854ecca 100644
--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -501,7 +501,7 @@ static int xen_vbd_translate(struct phys_req *req, struct
xen_blkif *blkif,
struct xen_vbd *vbd = &blkif->vbd;
int rc = -EACCES;
- if ((operation != READ) && vbd->readonly)
+ if ((operation != REQ_OP_READ) && vbd->readonly)
goto out;
if (likely(req->nr_sects)) {
@@ -1014,7 +1014,7 @@ static int dispatch_discard_io(struct xen_blkif_ring
*ring,
preq.sector_number = req->u.discard.sector_number;
preq.nr_sects = req->u.discard.nr_sectors;
- err = xen_vbd_translate(&preq, blkif, WRITE);
+ err = xen_vbd_translate(&preq, blkif, REQ_OP_WRITE);
if (err) {
pr_warn("access denied: DISCARD [%llu->%llu] on dev=%04x\n",
preq.sector_number,
@@ -1229,6 +1229,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring
*ring,
struct bio **biolist = pending_req->biolist;
int i, nbio = 0;
int operation;
+ int operation_flags = 0;
struct blk_plug plug;
bool drain = false;
struct grant_page **pages = pending_req->segments;
@@ -1247,17 +1248,19 @@ static int dispatch_rw_block_io(struct xen_blkif_ring
*ring,
switch (req_operation) {
case BLKIF_OP_READ:
ring->st_rd_req++;
- operation = READ;
+ operation = REQ_OP_READ;
break;
case BLKIF_OP_WRITE:
ring->st_wr_req++;
- operation = WRITE_ODIRECT;
+ operation = REQ_OP_WRITE;
+ operation_flags = WRITE_ODIRECT;
break;
case BLKIF_OP_WRITE_BARRIER:
drain = true;
case BLKIF_OP_FLUSH_DISKCACHE:
ring->st_f_req++;
- operation = WRITE_FLUSH;
+ operation = REQ_OP_WRITE;
+ operation_flags = WRITE_FLUSH;
break;
default:
operation = 0; /* make gcc happy */
@@ -1269,7 +1272,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring
*ring,
nseg = req->operation == BLKIF_OP_INDIRECT ?
req->u.indirect.nr_segments : req->u.rw.nr_segments;
- if (unlikely(nseg == 0 && operation != WRITE_FLUSH) ||
+ if (unlikely(nseg == 0 && operation_flags != WRITE_FLUSH) ||
unlikely((req->operation != BLKIF_OP_INDIRECT) &&
(nseg > BLKIF_MAX_SEGMENTS_PER_REQUEST)) ||
unlikely((req->operation == BLKIF_OP_INDIRECT) &&
@@ -1310,7 +1313,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring
*ring,
if (xen_vbd_translate(&preq, ring->blkif, operation) != 0) {
pr_debug("access denied: %s of [%llu,%llu] on dev=%04x\n",
- operation == READ ? "read" : "write",
+ operation == REQ_OP_READ ? "read" : "write",
preq.sector_number,
preq.sector_number + preq.nr_sects,
ring->blkif->vbd.pdevice);
@@ -1369,7 +1372,8 @@ static int dispatch_rw_block_io(struct xen_blkif_ring
*ring,
bio->bi_private = pending_req;
bio->bi_end_io = end_block_io_op;
bio->bi_iter.bi_sector = preq.sector_number;
- bio->bi_rw = operation;
+ bio->bi_op = operation;
+ bio->bi_rw = operation_flags;
}
preq.sector_number += seg[i].nsec;
@@ -1377,7 +1381,7 @@ static int dispatch_rw_block_io(struct xen_blkif_ring
*ring,
/* This will be hit if the operation was a flush or discard. */
if (!bio) {
- BUG_ON(operation != WRITE_FLUSH);
+ BUG_ON(operation_flags != WRITE_FLUSH);
bio = bio_alloc(GFP_KERNEL, 0);
if (unlikely(bio == NULL))
@@ -1387,7 +1391,8 @@ static int dispatch_rw_block_io(struct xen_blkif_ring
*ring,
bio->bi_bdev = preq.bdev;
bio->bi_private = pending_req;
bio->bi_end_io = end_block_io_op;
- bio->bi_rw = operation;
+ bio->bi_op = operation;
+ bio->bi_rw = operation_flags;
}
atomic_set(&pending_req->pendcnt, nbio);
@@ -1399,9 +1404,9 @@ static int dispatch_rw_block_io(struct xen_blkif_ring
*ring,
/* Let the I/Os go.. */
blk_finish_plug(&plug);
- if (operation == READ)
+ if (operation == REQ_OP_READ)
ring->st_rd_sect += preq.nr_sects;
- else if (operation & WRITE)
+ else if (operation == REQ_OP_WRITE)
ring->st_wr_sect += preq.nr_sects;
return 0;
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:48 UTC
[Ocfs2-devel] [PATCH 25/35] target: set bi_op to REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch has the target modules set the bio bi_op to a REQ_OP, and
rq_flag_bits to bi_rw.
This patch is compile tested only.
Signed-off-by: Mike Christie <mchristi at redhat.com>
Acked-by: Nicholas Bellinger <nab at linux-iscsi.org>
---
drivers/target/target_core_iblock.c | 38 ++++++++++++++++++++++---------------
drivers/target/target_core_pscsi.c | 2 +-
2 files changed, 24 insertions(+), 16 deletions(-)
diff --git a/drivers/target/target_core_iblock.c
b/drivers/target/target_core_iblock.c
index c352a64..8d3d197 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -312,7 +312,8 @@ static void iblock_bio_done(struct bio *bio)
}
static struct bio *
-iblock_get_bio(struct se_cmd *cmd, sector_t lba, u32 sg_num, int rw)
+iblock_get_bio(struct se_cmd *cmd, sector_t lba, u32 sg_num, int op,
+ int op_flags)
{
struct iblock_dev *ib_dev = IBLOCK_DEV(cmd->se_dev);
struct bio *bio;
@@ -334,7 +335,8 @@ iblock_get_bio(struct se_cmd *cmd, sector_t lba, u32 sg_num,
int rw)
bio->bi_private = cmd;
bio->bi_end_io = &iblock_bio_done;
bio->bi_iter.bi_sector = lba;
- bio->bi_rw = rw;
+ bio->bi_op = op;
+ bio->bi_rw = op_flags;
return bio;
}
@@ -446,7 +448,7 @@ iblock_execute_write_same(struct se_cmd *cmd)
goto fail;
cmd->priv = ibr;
- bio = iblock_get_bio(cmd, block_lba, 1, WRITE);
+ bio = iblock_get_bio(cmd, block_lba, 1, REQ_OP_WRITE, 0);
if (!bio)
goto fail_free_ibr;
@@ -459,7 +461,8 @@ iblock_execute_write_same(struct se_cmd *cmd)
while (bio_add_page(bio, sg_page(sg), sg->length, sg->offset)
!= sg->length) {
- bio = iblock_get_bio(cmd, block_lba, 1, WRITE);
+ bio = iblock_get_bio(cmd, block_lba, 1, REQ_OP_WRITE,
+ 0);
if (!bio)
goto fail_put_bios;
@@ -645,7 +648,8 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist
*sgl, u32 sgl_nents,
struct scatterlist *sg;
u32 sg_num = sgl_nents;
unsigned bio_cnt;
- int rw = 0;
+ int op_flags = 0;
+ int op = 0;
int i;
if (data_direction == DMA_TO_DEVICE) {
@@ -656,17 +660,20 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist
*sgl, u32 sgl_nents,
* is not enabled, or if initiator set the Force Unit Access bit.
*/
if (q->flush_flags & REQ_FUA) {
- if (cmd->se_cmd_flags & SCF_FUA)
- rw = WRITE_FUA;
- else if (!(q->flush_flags & REQ_FLUSH))
- rw = WRITE_FUA;
- else
- rw = WRITE;
+ if (cmd->se_cmd_flags & SCF_FUA) {
+ op = REQ_OP_WRITE;
+ op_flags = WRITE_FUA;
+ } else if (!(q->flush_flags & REQ_FLUSH)) {
+ op = REQ_OP_WRITE;
+ op_flags = WRITE_FUA;
+ } else {
+ op = REQ_OP_WRITE;
+ }
} else {
- rw = WRITE;
+ op = REQ_OP_WRITE;
}
} else {
- rw = READ;
+ op = REQ_OP_READ;
}
ibr = kzalloc(sizeof(struct iblock_req), GFP_KERNEL);
@@ -680,7 +687,7 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist
*sgl, u32 sgl_nents,
return 0;
}
- bio = iblock_get_bio(cmd, block_lba, sgl_nents, rw);
+ bio = iblock_get_bio(cmd, block_lba, sgl_nents, op, op_flags);
if (!bio)
goto fail_free_ibr;
@@ -704,7 +711,8 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist
*sgl, u32 sgl_nents,
bio_cnt = 0;
}
- bio = iblock_get_bio(cmd, block_lba, sg_num, rw);
+ bio = iblock_get_bio(cmd, block_lba, sg_num, op,
+ op_flags);
if (!bio)
goto fail_put_bios;
diff --git a/drivers/target/target_core_pscsi.c
b/drivers/target/target_core_pscsi.c
index de18790..2cf915c 100644
--- a/drivers/target/target_core_pscsi.c
+++ b/drivers/target/target_core_pscsi.c
@@ -922,7 +922,7 @@ pscsi_map_sg(struct se_cmd *cmd, struct scatterlist *sgl,
u32 sgl_nents,
goto fail;
if (rw)
- bio->bi_rw |= REQ_WRITE;
+ bio->bi_op = REQ_OP_WRITE;
pr_debug("PSCSI: Allocated bio: %p,"
" dir: %s nr_vecs: %d\n", bio,
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:48 UTC
[Ocfs2-devel] [PATCH 26/35] block: set op to REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch converts the request related block layer code to set
request->op to a REQ_OP and cmd_flags to rq_flag_bits.
There is some tmp compat code when setting up cmd_flags so it
still carries both the op and flags. It will be removed in
in later patches in this set when I have converted all drivers.
I have not been able to test the mq paths with real mq hardware.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
block/blk-core.c | 60 ++++++++++++++++++++++++++--------------------
block/blk-flush.c | 1 +
block/blk-merge.c | 10 ++++----
block/blk-mq.c | 38 ++++++++++++++++-------------
block/cfq-iosched.c | 53 +++++++++++++++++++++++-----------------
block/elevator.c | 8 +++----
include/linux/blk-cgroup.h | 13 +++++-----
include/linux/blkdev.h | 28 +++++++++++-----------
include/linux/elevator.h | 4 ++--
9 files changed, 120 insertions(+), 95 deletions(-)
diff --git a/block/blk-core.c b/block/blk-core.c
index 74aa201..60a0edb 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -959,10 +959,10 @@ static void __freed_request(struct request_list *rl, int
sync)
* A request has just been released. Account for it, update the full and
* congestion status, wake up any waiters. Called under q->queue_lock.
*/
-static void freed_request(struct request_list *rl, unsigned int flags)
+static void freed_request(struct request_list *rl, int op, unsigned int flags)
{
struct request_queue *q = rl->q;
- int sync = rw_is_sync(flags);
+ int sync = rw_is_sync(op, flags);
q->nr_rqs[sync]--;
rl->count[sync]--;
@@ -1054,7 +1054,8 @@ static struct io_context *rq_ioc(struct bio *bio)
/**
* __get_request - get a free request
* @rl: request list to allocate from
- * @rw_flags: RW and SYNC flags
+ * @op: REQ_OP_READ/REQ_OP_WRITE
+ * @op_flags: rq_flag_bits
* @bio: bio to allocate request for (can be %NULL)
* @gfp_mask: allocation mask
*
@@ -1065,21 +1066,22 @@ static struct io_context *rq_ioc(struct bio *bio)
* Returns ERR_PTR on failure, with @q->queue_lock held.
* Returns request pointer on success, with @q->queue_lock *not held*.
*/
-static struct request *__get_request(struct request_list *rl, int rw_flags,
- struct bio *bio, gfp_t gfp_mask)
+static struct request *__get_request(struct request_list *rl, int op,
+ int op_flags, struct bio *bio,
+ gfp_t gfp_mask)
{
struct request_queue *q = rl->q;
struct request *rq;
struct elevator_type *et = q->elevator->type;
struct io_context *ioc = rq_ioc(bio);
struct io_cq *icq = NULL;
- const bool is_sync = rw_is_sync(rw_flags) != 0;
+ const bool is_sync = rw_is_sync(op, op_flags) != 0;
int may_queue;
if (unlikely(blk_queue_dying(q)))
return ERR_PTR(-ENODEV);
- may_queue = elv_may_queue(q, rw_flags);
+ may_queue = elv_may_queue(q, op, op_flags);
if (may_queue == ELV_MQUEUE_NO)
goto rq_starved;
@@ -1123,7 +1125,7 @@ static struct request *__get_request(struct request_list
*rl, int rw_flags,
/*
* Decide whether the new request will be managed by elevator. If
- * so, mark @rw_flags and increment elvpriv. Non-zero elvpriv will
+ * so, mark @op_flags and increment elvpriv. Non-zero elvpriv will
* prevent the current elevator from being destroyed until the new
* request is freed. This guarantees icq's won't be destroyed and
* makes creating new ones safe.
@@ -1132,14 +1134,14 @@ static struct request *__get_request(struct request_list
*rl, int rw_flags,
* it will be created after releasing queue_lock.
*/
if (blk_rq_should_init_elevator(bio) && !blk_queue_bypass(q)) {
- rw_flags |= REQ_ELVPRIV;
+ op_flags |= REQ_ELVPRIV;
q->nr_rqs_elvpriv++;
if (et->icq_cache && ioc)
icq = ioc_lookup_icq(ioc, q);
}
if (blk_queue_io_stat(q))
- rw_flags |= REQ_IO_STAT;
+ op_flags |= REQ_IO_STAT;
spin_unlock_irq(q->queue_lock);
/* allocate and init request */
@@ -1149,10 +1151,12 @@ static struct request *__get_request(struct request_list
*rl, int rw_flags,
blk_rq_init(q, rq);
blk_rq_set_rl(rq, rl);
- rq->cmd_flags = rw_flags | REQ_ALLOCED;
+ /* tmp compat - allow users to check either one for the op */
+ rq->cmd_flags = op | op_flags | REQ_ALLOCED;
+ rq->op = op;
/* init elvpriv */
- if (rw_flags & REQ_ELVPRIV) {
+ if (op_flags & REQ_ELVPRIV) {
if (unlikely(et->icq_cache && !icq)) {
if (ioc)
icq = ioc_create_icq(ioc, q, gfp_mask);
@@ -1178,7 +1182,7 @@ out:
if (ioc_batching(q, ioc))
ioc->nr_batch_requests--;
- trace_block_getrq(q, bio, rw_flags & 1);
+ trace_block_getrq(q, bio, op);
return rq;
fail_elvpriv:
@@ -1208,7 +1212,7 @@ fail_alloc:
* queue, but this is pretty rare.
*/
spin_lock_irq(q->queue_lock);
- freed_request(rl, rw_flags);
+ freed_request(rl, op, op_flags);
/*
* in the very unlikely event that allocation failed and no
@@ -1226,7 +1230,8 @@ rq_starved:
/**
* get_request - get a free request
* @q: request_queue to allocate request from
- * @rw_flags: RW and SYNC flags
+ * op: REQ_OP_READ/REQ_OP_WRITE
+ * @op_flags: rq_flag_bits
* @bio: bio to allocate request for (can be %NULL)
* @gfp_mask: allocation mask
*
@@ -1237,17 +1242,18 @@ rq_starved:
* Returns ERR_PTR on failure, with @q->queue_lock held.
* Returns request pointer on success, with @q->queue_lock *not held*.
*/
-static struct request *get_request(struct request_queue *q, int rw_flags,
- struct bio *bio, gfp_t gfp_mask)
+static struct request *get_request(struct request_queue *q, int op,
+ int op_flags, struct bio *bio,
+ gfp_t gfp_mask)
{
- const bool is_sync = rw_is_sync(rw_flags) != 0;
+ const bool is_sync = rw_is_sync(op, op_flags) != 0;
DEFINE_WAIT(wait);
struct request_list *rl;
struct request *rq;
rl = blk_get_rl(q, bio); /* transferred to @rq on success */
retry:
- rq = __get_request(rl, rw_flags, bio, gfp_mask);
+ rq = __get_request(rl, op, op_flags, bio, gfp_mask);
if (!IS_ERR(rq))
return rq;
@@ -1260,7 +1266,7 @@ retry:
prepare_to_wait_exclusive(&rl->wait[is_sync], &wait,
TASK_UNINTERRUPTIBLE);
- trace_block_sleeprq(q, bio, rw_flags & 1);
+ trace_block_sleeprq(q, bio, op);
spin_unlock_irq(q->queue_lock);
io_schedule();
@@ -1289,7 +1295,7 @@ static struct request *blk_old_get_request(struct
request_queue *q, int rw,
create_io_context(gfp_mask, q->node);
spin_lock_irq(q->queue_lock);
- rq = get_request(q, rw, NULL, gfp_mask);
+ rq = get_request(q, rw, 0, NULL, gfp_mask);
if (IS_ERR(rq))
spin_unlock_irq(q->queue_lock);
/* q->queue_lock is unlocked at this point */
@@ -1491,13 +1497,14 @@ void __blk_put_request(struct request_queue *q, struct
request *req)
*/
if (req->cmd_flags & REQ_ALLOCED) {
unsigned int flags = req->cmd_flags;
+ int op = req->op;
struct request_list *rl = blk_rq_rl(req);
BUG_ON(!list_empty(&req->queuelist));
BUG_ON(ELV_ON_HASH(req));
blk_free_request(rl, req);
- freed_request(rl, flags);
+ freed_request(rl, op, flags);
blk_put_rl(rl);
}
}
@@ -1712,7 +1719,7 @@ static blk_qc_t blk_queue_bio(struct request_queue *q,
struct bio *bio)
{
const bool sync = !!(bio->bi_rw & REQ_SYNC);
struct blk_plug *plug;
- int el_ret, rw_flags, where = ELEVATOR_INSERT_SORT;
+ int el_ret, rw_flags = 0, where = ELEVATOR_INSERT_SORT;
struct request *req;
unsigned int request_count = 0;
@@ -1772,7 +1779,6 @@ get_rq:
* but we need to set it earlier to expose the sync flag to the
* rq allocator and io schedulers.
*/
- rw_flags = bio_data_dir(bio);
if (sync)
rw_flags |= REQ_SYNC;
@@ -1780,7 +1786,7 @@ get_rq:
* Grab a free request. This is might sleep but can not fail.
* Returns with the queue unlocked.
*/
- req = get_request(q, rw_flags, bio, GFP_NOIO);
+ req = get_request(q, bio_data_dir(bio), rw_flags, bio, GFP_NOIO);
if (IS_ERR(req)) {
bio->bi_error = PTR_ERR(req);
bio_endio(bio);
@@ -2168,7 +2174,7 @@ EXPORT_SYMBOL(submit_bio);
static int blk_cloned_rq_check_limits(struct request_queue *q,
struct request *rq)
{
- if (blk_rq_sectors(rq) > blk_queue_get_max_sectors(q, rq->cmd_flags)) {
+ if (blk_rq_sectors(rq) > blk_queue_get_max_sectors(q, rq->op)) {
printk(KERN_ERR "%s: over max size limit.\n", __func__);
return -EIO;
}
@@ -2989,6 +2995,7 @@ void blk_rq_bio_prep(struct request_queue *q, struct
request *rq,
{
/* tmp compat. Allow users to set bi_op or bi_rw */
rq->cmd_flags |= bio_data_dir(bio);
+ rq->op = bio->bi_op;
if (bio_has_data(bio))
rq->nr_phys_segments = bio_phys_segments(q, bio);
@@ -3073,6 +3080,7 @@ EXPORT_SYMBOL_GPL(blk_rq_unprep_clone);
static void __blk_rq_prep_clone(struct request *dst, struct request *src)
{
dst->cpu = src->cpu;
+ dst->op = src->op;
dst->cmd_flags |= (src->cmd_flags & REQ_CLONE_MASK) | REQ_NOMERGE;
dst->cmd_type = src->cmd_type;
dst->__sector = blk_rq_pos(src);
diff --git a/block/blk-flush.c b/block/blk-flush.c
index b05acca..e01d3ac 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -330,6 +330,7 @@ static bool blk_kick_flush(struct request_queue *q, struct
blk_flush_queue *fq)
flush_rq->cmd_type = REQ_TYPE_FS;
flush_rq->cmd_flags = WRITE_FLUSH | REQ_FLUSH_SEQ;
+ flush_rq->op = REQ_OP_WRITE;
flush_rq->rq_disk = first_rq->rq_disk;
flush_rq->end_io = flush_end_io;
diff --git a/block/blk-merge.c b/block/blk-merge.c
index 888a7fe..f9e012e 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -653,7 +653,8 @@ static int attempt_merge(struct request_queue *q, struct
request *req,
if (!rq_mergeable(req) || !rq_mergeable(next))
return 0;
- if (!blk_check_merge_flags(req->cmd_flags, next->cmd_flags))
+ if (!blk_check_merge_flags(req->cmd_flags, req->op, next->cmd_flags,
+ next->op))
return 0;
/*
@@ -667,7 +668,7 @@ static int attempt_merge(struct request_queue *q, struct
request *req,
|| req_no_special_merge(next))
return 0;
- if (req->cmd_flags & REQ_WRITE_SAME &&
+ if (req->op == REQ_OP_WRITE_SAME &&
!blk_write_same_mergeable(req->bio, next->bio))
return 0;
@@ -755,7 +756,8 @@ bool blk_rq_merge_ok(struct request *rq, struct bio *bio)
if (!rq_mergeable(rq) || !bio_mergeable(bio))
return false;
- if (!blk_check_merge_flags(rq->cmd_flags, bio->bi_rw))
+ if (!blk_check_merge_flags(rq->cmd_flags, rq->op, bio->bi_rw,
+ bio->bi_op))
return false;
/* different data direction or already started, don't merge */
@@ -771,7 +773,7 @@ bool blk_rq_merge_ok(struct request *rq, struct bio *bio)
return false;
/* must be using the same buffer */
- if (rq->cmd_flags & REQ_WRITE_SAME &&
+ if (rq->op == REQ_OP_WRITE_SAME &&
!blk_write_same_mergeable(rq->bio, bio))
return false;
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 1d0c3de..5581bac 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -159,16 +159,19 @@ bool blk_mq_can_queue(struct blk_mq_hw_ctx *hctx)
EXPORT_SYMBOL(blk_mq_can_queue);
static void blk_mq_rq_ctx_init(struct request_queue *q, struct blk_mq_ctx *ctx,
- struct request *rq, unsigned int rw_flags)
+ struct request *rq, int op,
+ unsigned int op_flags)
{
if (blk_queue_io_stat(q))
- rw_flags |= REQ_IO_STAT;
+ op_flags |= REQ_IO_STAT;
INIT_LIST_HEAD(&rq->queuelist);
/* csd/requeue_work/fifo_time is initialized before use */
rq->q = q;
rq->mq_ctx = ctx;
- rq->cmd_flags |= rw_flags;
+ rq->op = op;
+ /* tmp compat - allow users to check either one for the op */
+ rq->cmd_flags |= op | op_flags;
/* do not touch atomic flags, it needs atomic ops against the timer */
rq->cpu = -1;
INIT_HLIST_NODE(&rq->hash);
@@ -203,11 +206,11 @@ static void blk_mq_rq_ctx_init(struct request_queue *q,
struct blk_mq_ctx *ctx,
rq->end_io_data = NULL;
rq->next_rq = NULL;
- ctx->rq_dispatched[rw_is_sync(rw_flags)]++;
+ ctx->rq_dispatched[rw_is_sync(op, op_flags)]++;
}
static struct request *
-__blk_mq_alloc_request(struct blk_mq_alloc_data *data, int rw)
+__blk_mq_alloc_request(struct blk_mq_alloc_data *data, int op, int op_flags)
{
struct request *rq;
unsigned int tag;
@@ -222,7 +225,7 @@ __blk_mq_alloc_request(struct blk_mq_alloc_data *data, int
rw)
}
rq->tag = tag;
- blk_mq_rq_ctx_init(data->q, data->ctx, rq, rw);
+ blk_mq_rq_ctx_init(data->q, data->ctx, rq, op, op_flags);
return rq;
}
@@ -246,7 +249,7 @@ struct request *blk_mq_alloc_request(struct request_queue
*q, int rw,
hctx = q->mq_ops->map_queue(q, ctx->cpu);
blk_mq_set_alloc_data(&alloc_data, q, flags, ctx, hctx);
- rq = __blk_mq_alloc_request(&alloc_data, rw);
+ rq = __blk_mq_alloc_request(&alloc_data, rw, 0);
if (!rq && !(flags & BLK_MQ_REQ_NOWAIT)) {
__blk_mq_run_hw_queue(hctx);
blk_mq_put_ctx(ctx);
@@ -254,7 +257,7 @@ struct request *blk_mq_alloc_request(struct request_queue
*q, int rw,
ctx = blk_mq_get_ctx(q);
hctx = q->mq_ops->map_queue(q, ctx->cpu);
blk_mq_set_alloc_data(&alloc_data, q, flags, ctx, hctx);
- rq = __blk_mq_alloc_request(&alloc_data, rw);
+ rq = __blk_mq_alloc_request(&alloc_data, rw, 0);
ctx = alloc_data.ctx;
}
blk_mq_put_ctx(ctx);
@@ -1167,28 +1170,29 @@ static struct request *blk_mq_map_request(struct
request_queue *q,
struct blk_mq_hw_ctx *hctx;
struct blk_mq_ctx *ctx;
struct request *rq;
- int rw = bio_data_dir(bio);
+ int op = bio_data_dir(bio);
+ int op_flags = 0;
struct blk_mq_alloc_data alloc_data;
blk_queue_enter_live(q);
ctx = blk_mq_get_ctx(q);
hctx = q->mq_ops->map_queue(q, ctx->cpu);
- if (rw_is_sync(bio->bi_rw))
- rw |= REQ_SYNC;
+ if (rw_is_sync(bio->bi_op, bio->bi_rw))
+ op_flags |= REQ_SYNC;
- trace_block_getrq(q, bio, rw);
+ trace_block_getrq(q, bio, op);
blk_mq_set_alloc_data(&alloc_data, q, BLK_MQ_REQ_NOWAIT, ctx, hctx);
- rq = __blk_mq_alloc_request(&alloc_data, rw);
+ rq = __blk_mq_alloc_request(&alloc_data, op, op_flags);
if (unlikely(!rq)) {
__blk_mq_run_hw_queue(hctx);
blk_mq_put_ctx(ctx);
- trace_block_sleeprq(q, bio, rw);
+ trace_block_sleeprq(q, bio, op);
ctx = blk_mq_get_ctx(q);
hctx = q->mq_ops->map_queue(q, ctx->cpu);
blk_mq_set_alloc_data(&alloc_data, q, 0, ctx, hctx);
- rq = __blk_mq_alloc_request(&alloc_data, rw);
+ rq = __blk_mq_alloc_request(&alloc_data, op, op_flags);
ctx = alloc_data.ctx;
hctx = alloc_data.hctx;
}
@@ -1242,7 +1246,7 @@ static int blk_mq_direct_issue_request(struct request *rq,
blk_qc_t *cookie)
*/
static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio)
{
- const int is_sync = rw_is_sync(bio->bi_rw);
+ const int is_sync = rw_is_sync(bio->bi_op, bio->bi_rw);
const int is_flush_fua = bio->bi_rw & (REQ_FLUSH | REQ_FUA);
struct blk_map_ctx data;
struct request *rq;
@@ -1339,7 +1343,7 @@ done:
*/
static blk_qc_t blk_sq_make_request(struct request_queue *q, struct bio *bio)
{
- const int is_sync = rw_is_sync(bio->bi_rw);
+ const int is_sync = rw_is_sync(bio->bi_op, bio->bi_rw);
const int is_flush_fua = bio->bi_rw & (REQ_FLUSH | REQ_FUA);
struct blk_plug *plug;
unsigned int request_count = 0;
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index e3c591d..d7c719c 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -667,9 +667,10 @@ static inline void cfqg_put(struct cfq_group *cfqg)
} while (0)
static inline void cfqg_stats_update_io_add(struct cfq_group *cfqg,
- struct cfq_group *curr_cfqg, int rw)
+ struct cfq_group *curr_cfqg, int op,
+ int op_flags)
{
- blkg_rwstat_add(&cfqg->stats.queued, rw, 1);
+ blkg_rwstat_add(&cfqg->stats.queued, op, op_flags, 1);
cfqg_stats_end_empty_time(&cfqg->stats);
cfqg_stats_set_start_group_wait_time(cfqg, curr_cfqg);
}
@@ -683,26 +684,30 @@ static inline void cfqg_stats_update_timeslice_used(struct
cfq_group *cfqg,
#endif
}
-static inline void cfqg_stats_update_io_remove(struct cfq_group *cfqg, int rw)
+static inline void cfqg_stats_update_io_remove(struct cfq_group *cfqg, int op,
+ int op_flags)
{
- blkg_rwstat_add(&cfqg->stats.queued, rw, -1);
+ blkg_rwstat_add(&cfqg->stats.queued, op, op_flags, -1);
}
-static inline void cfqg_stats_update_io_merged(struct cfq_group *cfqg, int rw)
+static inline void cfqg_stats_update_io_merged(struct cfq_group *cfqg, int op,
+ int op_flags)
{
- blkg_rwstat_add(&cfqg->stats.merged, rw, 1);
+ blkg_rwstat_add(&cfqg->stats.merged, op, op_flags, 1);
}
static inline void cfqg_stats_update_completion(struct cfq_group *cfqg,
- uint64_t start_time, uint64_t io_start_time, int rw)
+ uint64_t start_time, uint64_t io_start_time, int op,
+ int op_flags)
{
struct cfqg_stats *stats = &cfqg->stats;
unsigned long long now = sched_clock();
if (time_after64(now, io_start_time))
- blkg_rwstat_add(&stats->service_time, rw, now - io_start_time);
+ blkg_rwstat_add(&stats->service_time, op, op_flags,
+ now - io_start_time);
if (time_after64(io_start_time, start_time))
- blkg_rwstat_add(&stats->wait_time, rw,
+ blkg_rwstat_add(&stats->wait_time, op, op_flags,
io_start_time - start_time);
}
@@ -781,13 +786,16 @@ static inline void cfqg_put(struct cfq_group *cfqg) { }
#define cfq_log_cfqg(cfqd, cfqg, fmt, args...) do {} while (0)
static inline void cfqg_stats_update_io_add(struct cfq_group *cfqg,
- struct cfq_group *curr_cfqg, int rw) { }
+ struct cfq_group *curr_cfqg, int op, int op_flags) { }
static inline void cfqg_stats_update_timeslice_used(struct cfq_group *cfqg,
unsigned long time, unsigned long unaccounted_time) { }
-static inline void cfqg_stats_update_io_remove(struct cfq_group *cfqg, int rw)
{ }
-static inline void cfqg_stats_update_io_merged(struct cfq_group *cfqg, int rw)
{ }
+static inline void cfqg_stats_update_io_remove(struct cfq_group *cfqg, int op,
+ int op_flags) { }
+static inline void cfqg_stats_update_io_merged(struct cfq_group *cfqg, int op,
+ int op_flags) { }
static inline void cfqg_stats_update_completion(struct cfq_group *cfqg,
- uint64_t start_time, uint64_t io_start_time, int rw) { }
+ uint64_t start_time, uint64_t io_start_time, int op,
+ int op_flags) { }
#endif /* CONFIG_CFQ_GROUP_IOSCHED */
@@ -2461,10 +2469,10 @@ static void cfq_reposition_rq_rb(struct cfq_queue *cfqq,
struct request *rq)
{
elv_rb_del(&cfqq->sort_list, rq);
cfqq->queued[rq_is_sync(rq)]--;
- cfqg_stats_update_io_remove(RQ_CFQG(rq), rq->cmd_flags);
+ cfqg_stats_update_io_remove(RQ_CFQG(rq), rq->op, rq->cmd_flags);
cfq_add_rq_rb(rq);
cfqg_stats_update_io_add(RQ_CFQG(rq), cfqq->cfqd->serving_group,
- rq->cmd_flags);
+ rq->op, rq->cmd_flags);
}
static struct request *
@@ -2517,7 +2525,7 @@ static void cfq_remove_request(struct request *rq)
cfq_del_rq_rb(rq);
cfqq->cfqd->rq_queued--;
- cfqg_stats_update_io_remove(RQ_CFQG(rq), rq->cmd_flags);
+ cfqg_stats_update_io_remove(RQ_CFQG(rq), rq->op, rq->cmd_flags);
if (rq->cmd_flags & REQ_PRIO) {
WARN_ON(!cfqq->prio_pending);
cfqq->prio_pending--;
@@ -2552,7 +2560,7 @@ static void cfq_merged_request(struct request_queue *q,
struct request *req,
static void cfq_bio_merged(struct request_queue *q, struct request *req,
struct bio *bio)
{
- cfqg_stats_update_io_merged(RQ_CFQG(req), bio->bi_rw);
+ cfqg_stats_update_io_merged(RQ_CFQG(req), bio->bi_op, bio->bi_rw);
}
static void
@@ -2575,7 +2583,7 @@ cfq_merged_requests(struct request_queue *q, struct
request *rq,
if (cfqq->next_rq == next)
cfqq->next_rq = rq;
cfq_remove_request(next);
- cfqg_stats_update_io_merged(RQ_CFQG(rq), next->cmd_flags);
+ cfqg_stats_update_io_merged(RQ_CFQG(rq), next->op, next->cmd_flags);
cfqq = RQ_CFQQ(next);
/*
@@ -4108,7 +4116,7 @@ static void cfq_insert_request(struct request_queue *q,
struct request *rq)
rq->fifo_time = jiffies + cfqd->cfq_fifo_expire[rq_is_sync(rq)];
list_add_tail(&rq->queuelist, &cfqq->fifo);
cfq_add_rq_rb(rq);
- cfqg_stats_update_io_add(RQ_CFQG(rq), cfqd->serving_group,
+ cfqg_stats_update_io_add(RQ_CFQG(rq), cfqd->serving_group, rq->op,
rq->cmd_flags);
cfq_rq_enqueued(cfqd, cfqq, rq);
}
@@ -4206,7 +4214,8 @@ static void cfq_completed_request(struct request_queue *q,
struct request *rq)
cfqq->dispatched--;
(RQ_CFQG(rq))->dispatched--;
cfqg_stats_update_completion(cfqq->cfqg, rq_start_time_ns(rq),
- rq_io_start_time_ns(rq), rq->cmd_flags);
+ rq_io_start_time_ns(rq), rq->op,
+ rq->cmd_flags);
cfqd->rq_in_flight[cfq_cfqq_sync(cfqq)]--;
@@ -4285,7 +4294,7 @@ static inline int __cfq_may_queue(struct cfq_queue *cfqq)
return ELV_MQUEUE_MAY;
}
-static int cfq_may_queue(struct request_queue *q, int rw)
+static int cfq_may_queue(struct request_queue *q, int op, int op_flags)
{
struct cfq_data *cfqd = q->elevator->elevator_data;
struct task_struct *tsk = current;
@@ -4302,7 +4311,7 @@ static int cfq_may_queue(struct request_queue *q, int rw)
if (!cic)
return ELV_MQUEUE_MAY;
- cfqq = cic_to_cfqq(cic, rw_is_sync(rw));
+ cfqq = cic_to_cfqq(cic, rw_is_sync(op, op_flags));
if (cfqq) {
cfq_init_prio_data(cfqq, cic);
diff --git a/block/elevator.c b/block/elevator.c
index c3555c9..f6279ca 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -366,8 +366,8 @@ void elv_dispatch_sort(struct request_queue *q, struct
request *rq)
list_for_each_prev(entry, &q->queue_head) {
struct request *pos = list_entry_rq(entry);
- if ((rq->cmd_flags & REQ_DISCARD) !- (pos->cmd_flags &
REQ_DISCARD))
+ if ((rq->op == REQ_OP_DISCARD) !+ (pos->op == REQ_OP_DISCARD))
break;
if (rq_data_dir(rq) != rq_data_dir(pos))
break;
@@ -717,12 +717,12 @@ void elv_put_request(struct request_queue *q, struct
request *rq)
e->type->ops.elevator_put_req_fn(rq);
}
-int elv_may_queue(struct request_queue *q, int rw)
+int elv_may_queue(struct request_queue *q, int op, int op_flags)
{
struct elevator_queue *e = q->elevator;
if (e->type->ops.elevator_may_queue_fn)
- return e->type->ops.elevator_may_queue_fn(q, rw);
+ return e->type->ops.elevator_may_queue_fn(q, op, op_flags);
return ELV_MQUEUE_MAY;
}
diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h
index c02e669..9071feb 100644
--- a/include/linux/blk-cgroup.h
+++ b/include/linux/blk-cgroup.h
@@ -590,25 +590,26 @@ static inline void blkg_rwstat_exit(struct blkg_rwstat
*rwstat)
/**
* blkg_rwstat_add - add a value to a blkg_rwstat
* @rwstat: target blkg_rwstat
- * @rw: mask of REQ_{WRITE|SYNC}
+ * @op: REQ_OP
+ * @op_flags: rq_flag_bits
* @val: value to add
*
* Add @val to @rwstat. The counters are chosen according to @rw. The
* caller is responsible for synchronizing calls to this function.
*/
static inline void blkg_rwstat_add(struct blkg_rwstat *rwstat,
- int rw, uint64_t val)
+ int op, int op_flags, uint64_t val)
{
struct percpu_counter *cnt;
- if (rw & REQ_WRITE)
+ if (op_is_write(op))
cnt = &rwstat->cpu_cnt[BLKG_RWSTAT_WRITE];
else
cnt = &rwstat->cpu_cnt[BLKG_RWSTAT_READ];
__percpu_counter_add(cnt, val, BLKG_STAT_CPU_BATCH);
- if (rw & REQ_SYNC)
+ if (op_flags & REQ_SYNC)
cnt = &rwstat->cpu_cnt[BLKG_RWSTAT_SYNC];
else
cnt = &rwstat->cpu_cnt[BLKG_RWSTAT_ASYNC];
@@ -713,9 +714,9 @@ static inline bool blkcg_bio_issue_check(struct
request_queue *q,
if (!throtl) {
blkg = blkg ?: q->root_blkg;
- blkg_rwstat_add(&blkg->stat_bytes, bio->bi_rw,
+ blkg_rwstat_add(&blkg->stat_bytes, bio->bi_op, bio->bi_rw,
bio->bi_iter.bi_size);
- blkg_rwstat_add(&blkg->stat_ios, bio->bi_rw, 1);
+ blkg_rwstat_add(&blkg->stat_ios, bio->bi_op, bio->bi_rw, 1);
}
rcu_read_unlock();
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index d4d3b06..1c01a41 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -596,7 +596,7 @@ static inline void queue_flag_clear(unsigned int flag,
struct request_queue *q)
#define list_entry_rq(ptr) list_entry((ptr), struct request, queuelist)
-#define rq_data_dir(rq) ((int)((rq)->cmd_flags & 1))
+#define rq_data_dir(rq) (op_is_write(rq->op) ? WRITE : READ)
/*
* Driver can handle struct request, if it either has an old style
@@ -615,14 +615,14 @@ static inline unsigned int blk_queue_cluster(struct
request_queue *q)
/*
* We regard a request as sync, if either a read or a sync write
*/
-static inline bool rw_is_sync(unsigned int rw_flags)
+static inline bool rw_is_sync(int op, unsigned int rw_flags)
{
- return !(rw_flags & REQ_WRITE) || (rw_flags & REQ_SYNC);
+ return op == REQ_OP_READ || (rw_flags & REQ_SYNC);
}
static inline bool rq_is_sync(struct request *rq)
{
- return rw_is_sync(rq->cmd_flags);
+ return rw_is_sync(rq->op, rq->cmd_flags);
}
static inline bool blk_rl_full(struct request_list *rl, bool sync)
@@ -657,16 +657,16 @@ static inline bool rq_mergeable(struct request *rq)
return true;
}
-static inline bool blk_check_merge_flags(unsigned int flags1,
- unsigned int flags2)
+static inline bool blk_check_merge_flags(unsigned int flags1, unsigned int op1,
+ unsigned int flags2, unsigned int op2)
{
- if ((flags1 & REQ_DISCARD) != (flags2 & REQ_DISCARD))
+ if ((op1 == REQ_OP_DISCARD) != (op2 == REQ_OP_DISCARD))
return false;
if ((flags1 & REQ_SECURE) != (flags2 & REQ_SECURE))
return false;
- if ((flags1 & REQ_WRITE_SAME) != (flags2 & REQ_WRITE_SAME))
+ if ((op1 == REQ_OP_WRITE_SAME) != (op2 == REQ_OP_WRITE_SAME))
return false;
return true;
@@ -867,12 +867,12 @@ static inline unsigned int blk_rq_cur_sectors(const struct
request *rq)
}
static inline unsigned int blk_queue_get_max_sectors(struct request_queue *q,
- unsigned int cmd_flags)
+ int op)
{
- if (unlikely(cmd_flags & REQ_DISCARD))
+ if (unlikely(op == REQ_OP_DISCARD))
return min(q->limits.max_discard_sectors, UINT_MAX >> 9);
- if (unlikely(cmd_flags & REQ_WRITE_SAME))
+ if (unlikely(op == REQ_OP_WRITE_SAME))
return q->limits.max_write_same_sectors;
return q->limits.max_sectors;
@@ -899,11 +899,11 @@ static inline unsigned int blk_rq_get_max_sectors(struct
request *rq)
if (unlikely(rq->cmd_type == REQ_TYPE_BLOCK_PC))
return q->limits.max_hw_sectors;
- if (!q->limits.chunk_sectors || (rq->cmd_flags & REQ_DISCARD))
- return blk_queue_get_max_sectors(q, rq->cmd_flags);
+ if (!q->limits.chunk_sectors || (rq->op == REQ_OP_DISCARD))
+ return blk_queue_get_max_sectors(q, rq->op);
return min(blk_max_size_offset(q, blk_rq_pos(rq)),
- blk_queue_get_max_sectors(q, rq->cmd_flags));
+ blk_queue_get_max_sectors(q, rq->op));
}
static inline unsigned int blk_rq_count_bios(struct request *rq)
diff --git a/include/linux/elevator.h b/include/linux/elevator.h
index 638b324..953d286 100644
--- a/include/linux/elevator.h
+++ b/include/linux/elevator.h
@@ -26,7 +26,7 @@ typedef int (elevator_dispatch_fn) (struct request_queue *,
int);
typedef void (elevator_add_req_fn) (struct request_queue *, struct request *);
typedef struct request *(elevator_request_list_fn) (struct request_queue *,
struct request *);
typedef void (elevator_completed_req_fn) (struct request_queue *, struct
request *);
-typedef int (elevator_may_queue_fn) (struct request_queue *, int);
+typedef int (elevator_may_queue_fn) (struct request_queue *, int, int);
typedef void (elevator_init_icq_fn) (struct io_cq *);
typedef void (elevator_exit_icq_fn) (struct io_cq *);
@@ -134,7 +134,7 @@ extern struct request *elv_former_request(struct
request_queue *, struct request
extern struct request *elv_latter_request(struct request_queue *, struct
request *);
extern int elv_register_queue(struct request_queue *q);
extern void elv_unregister_queue(struct request_queue *q);
-extern int elv_may_queue(struct request_queue *, int);
+extern int elv_may_queue(struct request_queue *, int, int);
extern void elv_completed_request(struct request_queue *, struct request *);
extern int elv_set_request(struct request_queue *q, struct request *rq,
struct bio *bio, gfp_t gfp_mask);
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:48 UTC
[Ocfs2-devel] [PATCH 27/35] drivers: set request op to REQ_OP
From: Mike Christie <mchristi at redhat.com>
This patch has the block drivers use the request->op for REQ_OP
operations and cmd_flags for rq_flag_bits.
I have only tested scsi and rbd.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
drivers/block/loop.c | 6 +++---
drivers/block/mtip32xx/mtip32xx.c | 2 +-
drivers/block/nbd.c | 2 +-
drivers/block/rbd.c | 2 +-
drivers/block/skd_main.c | 11 ++++-------
drivers/block/xen-blkfront.c | 8 +++++---
drivers/md/dm.c | 2 +-
drivers/mmc/card/block.c | 7 +++----
drivers/mmc/card/queue.c | 6 ++----
drivers/mmc/card/queue.h | 5 ++++-
drivers/mtd/mtd_blkdevs.c | 2 +-
drivers/nvme/host/pci.c | 4 ++--
drivers/scsi/sd.c | 25 ++++++++++++++++---------
13 files changed, 44 insertions(+), 38 deletions(-)
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 423f4ca..e771bab 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -538,7 +538,7 @@ static int do_req_filebacked(struct loop_device *lo, struct
request *rq)
if (rq->cmd_flags & REQ_WRITE) {
if (rq->cmd_flags & REQ_FLUSH)
ret = lo_req_flush(lo, rq);
- else if (rq->cmd_flags & REQ_DISCARD)
+ else if (rq->op == REQ_OP_DISCARD)
ret = lo_discard(lo, rq, pos);
else if (lo->transfer)
ret = lo_write_transfer(lo, rq, pos);
@@ -1653,8 +1653,8 @@ static int loop_queue_rq(struct blk_mq_hw_ctx *hctx,
if (lo->lo_state != Lo_bound)
return -EIO;
- if (lo->use_dio && !(cmd->rq->cmd_flags & (REQ_FLUSH |
- REQ_DISCARD)))
+ if (lo->use_dio && (!(cmd->rq->cmd_flags & REQ_FLUSH) ||
+ cmd->rq->op == REQ_OP_DISCARD))
cmd->use_aio = true;
else
cmd->use_aio = false;
diff --git a/drivers/block/mtip32xx/mtip32xx.c
b/drivers/block/mtip32xx/mtip32xx.c
index 9b180db..3995a9e 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -3670,7 +3670,7 @@ static int mtip_submit_request(struct blk_mq_hw_ctx *hctx,
struct request *rq)
return -ENXIO;
}
- if (rq->cmd_flags & REQ_DISCARD) {
+ if (rq->op == REQ_OP_DISCARD) {
int err;
err = mtip_send_trim(dd, blk_rq_pos(rq), blk_rq_sectors(rq));
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index e4c5cc1..dd8f3e9 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -242,7 +242,7 @@ static int nbd_send_req(struct nbd_device *nbd, struct
request *req)
if (req->cmd_type == REQ_TYPE_DRV_PRIV)
type = NBD_CMD_DISC;
- else if (req->cmd_flags & REQ_DISCARD)
+ else if (req->op == REQ_OP_DISCARD)
type = NBD_CMD_TRIM;
else if (req->cmd_flags & REQ_FLUSH)
type = NBD_CMD_FLUSH;
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 4a87678..1d0f464 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -3373,7 +3373,7 @@ static void rbd_queue_workfn(struct work_struct *work)
goto err;
}
- if (rq->cmd_flags & REQ_DISCARD)
+ if (rq->op == REQ_OP_DISCARD)
op_type = OBJ_OP_DISCARD;
else if (rq->cmd_flags & REQ_WRITE)
op_type = OBJ_OP_WRITE;
diff --git a/drivers/block/skd_main.c b/drivers/block/skd_main.c
index 586f916..f89a0c8 100644
--- a/drivers/block/skd_main.c
+++ b/drivers/block/skd_main.c
@@ -576,7 +576,6 @@ static void skd_request_fn(struct request_queue *q)
struct request *req = NULL;
struct skd_scsi_request *scsi_req;
struct page *page;
- unsigned long io_flags;
int error;
u32 lba;
u32 count;
@@ -624,12 +623,11 @@ static void skd_request_fn(struct request_queue *q)
lba = (u32)blk_rq_pos(req);
count = blk_rq_sectors(req);
data_dir = rq_data_dir(req);
- io_flags = req->cmd_flags;
- if (io_flags & REQ_FLUSH)
+ if (req->cmd_flags & REQ_FLUSH)
flush++;
- if (io_flags & REQ_FUA)
+ if (req->cmd_flags & REQ_FUA)
fua++;
pr_debug("%s:%s:%d new req=%p lba=%u(0x%x) "
@@ -735,7 +733,7 @@ static void skd_request_fn(struct request_queue *q)
else
skreq->sg_data_dir = SKD_DATA_DIR_HOST_TO_CARD;
- if (io_flags & REQ_DISCARD) {
+ if (req->op == REQ_OP_DISCARD) {
page = alloc_page(GFP_ATOMIC | __GFP_ZERO);
if (!page) {
pr_err("request_fn:Page allocation failed.\n");
@@ -852,9 +850,8 @@ static void skd_end_request(struct skd_device *skdev,
struct skd_request_context *skreq, int error)
{
struct request *req = skreq->req;
- unsigned int io_flags = req->cmd_flags;
- if ((io_flags & REQ_DISCARD) &&
+ if ((req->op == REQ_OP_DISCARD) &&
(skreq->discard_page == 1)) {
pr_debug("%s:%s:%d, free the page!",
skdev->name, __func__, __LINE__);
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 7ba2ed1..34e8f1a 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -842,7 +842,8 @@ static int blkif_queue_request(struct request *req, struct
blkfront_ring_info *r
if (unlikely(rinfo->dev_info->connected != BLKIF_STATE_CONNECTED))
return 1;
- if (unlikely(req->cmd_flags & (REQ_DISCARD | REQ_SECURE)))
+ if (unlikely(req->op == REQ_OP_DISCARD ||
+ req->cmd_flags & REQ_SECURE))
return blkif_queue_discard_req(req, rinfo);
else
return blkif_queue_rw_req(req, rinfo);
@@ -2051,8 +2052,9 @@ static int blkif_recover(struct blkfront_info *info)
/*
* Get the bios in the request so we can re-queue them.
*/
- if (copy[i].request->cmd_flags &
- (REQ_FLUSH | REQ_FUA | REQ_DISCARD | REQ_SECURE)) {
+ if (copy[i].request->cmd_flags & REQ_FLUSH ||
+ copy[i].request->op == REQ_OP_DISCARD ||
+ copy[i].request->cmd_flags & (REQ_FUA | REQ_SECURE)) {
/*
* Flush operations don't contain bios, so
* we need to requeue the whole request
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 38c7d93..53f7b1e 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1322,7 +1322,7 @@ static void dm_done(struct request *clone, int error, bool
mapped)
r = rq_end_io(tio->ti, clone, error, &tio->info);
}
- if (unlikely(r == -EREMOTEIO && (clone->cmd_flags &
REQ_WRITE_SAME) &&
+ if (unlikely(r == -EREMOTEIO && (clone->op == REQ_OP_WRITE_SAME)
&&
!clone->q->limits.max_write_same_sectors))
disable_write_same(tio->md);
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 47bc87d..1f84a44 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1690,8 +1690,7 @@ static u8 mmc_blk_prep_packed_list(struct mmc_queue *mq,
struct request *req)
!IS_ALIGNED(blk_rq_sectors(next), 8))
break;
- if (next->cmd_flags & REQ_DISCARD ||
- next->cmd_flags & REQ_FLUSH)
+ if (next->op == REQ_OP_DISCARD || next->cmd_flags & REQ_FLUSH)
break;
if (rq_data_dir(cur) != rq_data_dir(next))
@@ -2132,7 +2131,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct
request *req)
}
mq->flags &= ~MMC_QUEUE_NEW_REQUEST;
- if (cmd_flags & REQ_DISCARD) {
+ if (req && req->op == REQ_OP_DISCARD) {
/* complete ongoing async transfer before issuing discard */
if (card->host->areq)
mmc_blk_issue_rw_rq(mq, NULL);
@@ -2156,7 +2155,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct
request *req)
out:
if ((!req && !(mq->flags & MMC_QUEUE_NEW_REQUEST)) ||
- (cmd_flags & MMC_REQ_SPECIAL_MASK))
+ mmc_req_is_special(req))
/*
* Release host when there are no more requests
* and after special request(discard, flush) is done.
diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c
index 6f4323c..9fb8d21 100644
--- a/drivers/mmc/card/queue.c
+++ b/drivers/mmc/card/queue.c
@@ -33,7 +33,7 @@ static int mmc_prep_request(struct request_queue *q, struct
request *req)
/*
* We only like normal block requests and discards.
*/
- if (req->cmd_type != REQ_TYPE_FS && !(req->cmd_flags &
REQ_DISCARD)) {
+ if (req->cmd_type != REQ_TYPE_FS && req->op != REQ_OP_DISCARD) {
blk_dump_rq_flags(req, "MMC bad request");
return BLKPREP_KILL;
}
@@ -56,7 +56,6 @@ static int mmc_queue_thread(void *d)
down(&mq->thread_sem);
do {
struct request *req = NULL;
- unsigned int cmd_flags = 0;
spin_lock_irq(q->queue_lock);
set_current_state(TASK_INTERRUPTIBLE);
@@ -66,7 +65,6 @@ static int mmc_queue_thread(void *d)
if (req || mq->mqrq_prev->req) {
set_current_state(TASK_RUNNING);
- cmd_flags = req ? req->cmd_flags : 0;
mq->issue_fn(mq, req);
cond_resched();
if (mq->flags & MMC_QUEUE_NEW_REQUEST) {
@@ -81,7 +79,7 @@ static int mmc_queue_thread(void *d)
* has been finished. Do not assign it to previous
* request.
*/
- if (cmd_flags & MMC_REQ_SPECIAL_MASK)
+ if (mmc_req_is_special(req))
mq->mqrq_cur->req = NULL;
mq->mqrq_prev->brq.mrq.data = NULL;
diff --git a/drivers/mmc/card/queue.h b/drivers/mmc/card/queue.h
index 36cddab..f166e5b 100644
--- a/drivers/mmc/card/queue.h
+++ b/drivers/mmc/card/queue.h
@@ -1,7 +1,10 @@
#ifndef MMC_QUEUE_H
#define MMC_QUEUE_H
-#define MMC_REQ_SPECIAL_MASK (REQ_DISCARD | REQ_FLUSH)
+static inline bool mmc_req_is_special(struct request *req)
+{
+ return req && (req->cmd_flags & REQ_FLUSH || req->op ==
REQ_OP_DISCARD);
+}
struct request;
struct task_struct;
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index f470118..b2e0bce 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -94,7 +94,7 @@ static int do_blktrans_request(struct mtd_blktrans_ops *tr,
get_capacity(req->rq_disk))
return -EIO;
- if (req->cmd_flags & REQ_DISCARD)
+ if (req->op == REQ_OP_DISCARD)
return tr->discard(dev, block, nsect);
if (rq_data_dir(req) == READ) {
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 720a523..da32c93 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -330,7 +330,7 @@ static int nvme_init_iod(struct request *rq, struct nvme_dev
*dev)
int nseg = rq->nr_phys_segments;
unsigned size;
- if (rq->cmd_flags & REQ_DISCARD)
+ if (rq->op == REQ_OP_DISCARD)
size = sizeof(struct nvme_dsm_range);
else
size = blk_rq_bytes(rq);
@@ -646,7 +646,7 @@ static int nvme_queue_rq(struct blk_mq_hw_ctx *hctx,
if (ret)
return ret;
- if (req->cmd_flags & REQ_DISCARD) {
+ if (req->op == REQ_OP_DISCARD) {
ret = nvme_setup_discard(nvmeq, ns, req, &cmnd);
} else {
if (req->cmd_type == REQ_TYPE_DRV_PRIV)
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index d749da7..e8fbd0f 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1012,7 +1012,8 @@ static int sd_setup_read_write_cmnd(struct scsi_cmnd
*SCpnt)
} else if (rq_data_dir(rq) == READ) {
SCpnt->cmnd[0] = READ_6;
} else {
- scmd_printk(KERN_ERR, SCpnt, "Unknown command %llx\n", (unsigned
long long) rq->cmd_flags);
+ scmd_printk(KERN_ERR, SCpnt, "Unknown command %d,%llx\n",
+ rq->op, (unsigned long long) rq->cmd_flags);
goto out;
}
@@ -1137,21 +1138,27 @@ static int sd_init_command(struct scsi_cmnd *cmd)
{
struct request *rq = cmd->request;
- if (rq->cmd_flags & REQ_DISCARD)
+ switch (rq->op) {
+ case REQ_OP_DISCARD:
return sd_setup_discard_cmnd(cmd);
- else if (rq->cmd_flags & REQ_WRITE_SAME)
+ case REQ_OP_WRITE_SAME:
return sd_setup_write_same_cmnd(cmd);
- else if (rq->cmd_flags & REQ_FLUSH)
- return sd_setup_flush_cmnd(cmd);
- else
- return sd_setup_read_write_cmnd(cmd);
+ case REQ_OP_READ:
+ case REQ_OP_WRITE:
+ if (rq->cmd_flags & REQ_FLUSH)
+ return sd_setup_flush_cmnd(cmd);
+ else
+ return sd_setup_read_write_cmnd(cmd);
+ default:
+ BUG();
+ }
}
static void sd_uninit_command(struct scsi_cmnd *SCpnt)
{
struct request *rq = SCpnt->request;
- if (rq->cmd_flags & REQ_DISCARD)
+ if (rq->op == REQ_OP_DISCARD)
__free_page(rq->completion_data);
if (SCpnt->cmnd != rq->cmd) {
@@ -1768,7 +1775,7 @@ static int sd_done(struct scsi_cmnd *SCpnt)
unsigned char op = SCpnt->cmnd[0];
unsigned char unmap = SCpnt->cmnd[1] & 8;
- if (req->cmd_flags & REQ_DISCARD || req->cmd_flags &
REQ_WRITE_SAME) {
+ if (req->op == REQ_OP_DISCARD || req->op == REQ_OP_WRITE_SAME) {
if (!result) {
good_bytes = blk_rq_bytes(req);
scsi_set_resid(SCpnt, 0);
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:48 UTC
[Ocfs2-devel] [PATCH 28/35] blktrace: get op from req->op/bio->bi_op
From: Mike Christie <mchristi at redhat.com>
The bio and request struct now store the operation in
bio->bi_op/request->op. This patch has blktrace not
check bi_rw/cmd_flags.
This patch is only compile tested.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
include/linux/blktrace_api.h | 2 +-
include/trace/events/bcache.h | 12 ++++++----
include/trace/events/block.h | 31 +++++++++++++++++---------
kernel/trace/blktrace.c | 52 +++++++++++++++++++++++--------------------
4 files changed, 57 insertions(+), 40 deletions(-)
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index afc1343..ee25ba4 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -109,7 +109,7 @@ static inline int blk_cmd_buf_len(struct request *rq)
}
extern void blk_dump_cmd(char *buf, struct request *rq);
-extern void blk_fill_rwbs(char *rwbs, u32 rw, int bytes);
+extern void blk_fill_rwbs(char *rwbs, int op, u32 rw, int bytes);
#endif /* CONFIG_EVENT_TRACING && CONFIG_BLOCK */
diff --git a/include/trace/events/bcache.h b/include/trace/events/bcache.h
index 981acf7..8abe564 100644
--- a/include/trace/events/bcache.h
+++ b/include/trace/events/bcache.h
@@ -27,7 +27,8 @@ DECLARE_EVENT_CLASS(bcache_request,
__entry->sector = bio->bi_iter.bi_sector;
__entry->orig_sector = bio->bi_iter.bi_sector - 16;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
),
TP_printk("%d,%d %s %llu + %u (from %d,%d @ %llu)",
@@ -101,7 +102,8 @@ DECLARE_EVENT_CLASS(bcache_bio,
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
),
TP_printk("%d,%d %s %llu + %u",
@@ -136,7 +138,8 @@ TRACE_EVENT(bcache_read,
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
__entry->cache_hit = hit;
__entry->bypass = bypass;
),
@@ -167,7 +170,8 @@ TRACE_EVENT(bcache_write,
__entry->inode = inode;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio->bi_iter.bi_size >> 9;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
__entry->writeback = writeback;
__entry->bypass = bypass;
),
diff --git a/include/trace/events/block.h b/include/trace/events/block.h
index e8a5eca..4416dcd 100644
--- a/include/trace/events/block.h
+++ b/include/trace/events/block.h
@@ -84,7 +84,8 @@ DECLARE_EVENT_CLASS(block_rq_with_error,
0 : blk_rq_sectors(rq);
__entry->errors = rq->errors;
- blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
+ blk_fill_rwbs(__entry->rwbs, rq->op, rq->cmd_flags,
+ blk_rq_bytes(rq));
blk_dump_cmd(__get_str(cmd), rq);
),
@@ -162,7 +163,7 @@ TRACE_EVENT(block_rq_complete,
__entry->nr_sector = nr_bytes >> 9;
__entry->errors = rq->errors;
- blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, nr_bytes);
+ blk_fill_rwbs(__entry->rwbs, rq->op, rq->cmd_flags, nr_bytes);
blk_dump_cmd(__get_str(cmd), rq);
),
@@ -198,7 +199,8 @@ DECLARE_EVENT_CLASS(block_rq,
__entry->bytes = (rq->cmd_type == REQ_TYPE_BLOCK_PC) ?
blk_rq_bytes(rq) : 0;
- blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
+ blk_fill_rwbs(__entry->rwbs, rq->op, rq->cmd_flags,
+ blk_rq_bytes(rq));
blk_dump_cmd(__get_str(cmd), rq);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
@@ -272,7 +274,8 @@ TRACE_EVENT(block_bio_bounce,
bio->bi_bdev->bd_dev : 0;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio_sectors(bio);
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
@@ -310,7 +313,8 @@ TRACE_EVENT(block_bio_complete,
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio_sectors(bio);
__entry->error = error;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
),
TP_printk("%d,%d %s %llu + %u [%d]",
@@ -337,7 +341,8 @@ DECLARE_EVENT_CLASS(block_bio_merge,
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio_sectors(bio);
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
@@ -404,7 +409,8 @@ TRACE_EVENT(block_bio_queue,
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->nr_sector = bio_sectors(bio);
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
@@ -432,7 +438,7 @@ DECLARE_EVENT_CLASS(block_get_rq,
__entry->dev = bio ? bio->bi_bdev->bd_dev : 0;
__entry->sector = bio ? bio->bi_iter.bi_sector : 0;
__entry->nr_sector = bio ? bio_sectors(bio) : 0;
- blk_fill_rwbs(__entry->rwbs,
+ blk_fill_rwbs(__entry->rwbs, bio ? bio->bi_op : 0,
bio ? bio->bi_rw : 0, __entry->nr_sector);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
@@ -567,7 +573,8 @@ TRACE_EVENT(block_split,
__entry->dev = bio->bi_bdev->bd_dev;
__entry->sector = bio->bi_iter.bi_sector;
__entry->new_sector = new_sector;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
),
@@ -610,7 +617,8 @@ TRACE_EVENT(block_bio_remap,
__entry->nr_sector = bio_sectors(bio);
__entry->old_dev = dev;
__entry->old_sector = from;
- blk_fill_rwbs(__entry->rwbs, bio->bi_rw, bio->bi_iter.bi_size);
+ blk_fill_rwbs(__entry->rwbs, bio->bi_op, bio->bi_rw,
+ bio->bi_iter.bi_size);
),
TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu",
@@ -656,7 +664,8 @@ TRACE_EVENT(block_rq_remap,
__entry->old_dev = dev;
__entry->old_sector = from;
__entry->nr_bios = blk_rq_count_bios(rq);
- blk_fill_rwbs(__entry->rwbs, rq->cmd_flags, blk_rq_bytes(rq));
+ blk_fill_rwbs(__entry->rwbs, rq->op, rq->cmd_flags,
+ blk_rq_bytes(rq));
),
TP_printk("%d,%d %s %llu + %u <- (%d,%d) %llu %u",
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 2aeb6ff..4a9ac83 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -199,7 +199,8 @@ static const u32 ddir_act[2] = { BLK_TC_ACT(BLK_TC_READ),
* blk_io_trace structure and places it in a per-cpu subbuffer.
*/
static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
- int rw, u32 what, int error, int pdu_len, void *pdu_data)
+ int op, int op_flags, u32 what, int error, int pdu_len,
+ void *pdu_data)
{
struct task_struct *tsk = current;
struct ring_buffer_event *event = NULL;
@@ -214,13 +215,14 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t
sector, int bytes,
if (unlikely(bt->trace_state != Blktrace_running && !blk_tracer))
return;
- what |= ddir_act[rw & WRITE];
- what |= MASK_TC_BIT(rw, SYNC);
- what |= MASK_TC_BIT(rw, RAHEAD);
- what |= MASK_TC_BIT(rw, META);
- what |= MASK_TC_BIT(rw, DISCARD);
- what |= MASK_TC_BIT(rw, FLUSH);
- what |= MASK_TC_BIT(rw, FUA);
+ what |= ddir_act[op_is_write(op) ? WRITE : READ];
+ what |= MASK_TC_BIT(op_flags, SYNC);
+ what |= MASK_TC_BIT(op_flags, RAHEAD);
+ what |= MASK_TC_BIT(op_flags, META);
+ what |= MASK_TC_BIT(op_flags, FLUSH);
+ what |= MASK_TC_BIT(op_flags, FUA);
+ if (op == REQ_OP_DISCARD)
+ what |= BLK_TC_ACT(BLK_TC_DISCARD);
pid = tsk->pid;
if (act_log_check(bt, what, sector, pid))
@@ -708,11 +710,11 @@ static void blk_add_trace_rq(struct request_queue *q,
struct request *rq,
if (rq->cmd_type == REQ_TYPE_BLOCK_PC) {
what |= BLK_TC_ACT(BLK_TC_PC);
- __blk_add_trace(bt, 0, nr_bytes, rq->cmd_flags,
+ __blk_add_trace(bt, 0, nr_bytes, rq->op, rq->cmd_flags,
what, rq->errors, rq->cmd_len, rq->cmd);
} else {
what |= BLK_TC_ACT(BLK_TC_FS);
- __blk_add_trace(bt, blk_rq_pos(rq), nr_bytes,
+ __blk_add_trace(bt, blk_rq_pos(rq), nr_bytes, rq->op,
rq->cmd_flags, what, rq->errors, 0, NULL);
}
}
@@ -770,7 +772,7 @@ static void blk_add_trace_bio(struct request_queue *q,
struct bio *bio,
return;
__blk_add_trace(bt, bio->bi_iter.bi_sector, bio->bi_iter.bi_size,
- bio->bi_rw, what, error, 0, NULL);
+ bio->bi_op, bio->bi_rw, what, error, 0, NULL);
}
static void blk_add_trace_bio_bounce(void *ignore,
@@ -818,7 +820,8 @@ static void blk_add_trace_getrq(void *ignore,
struct blk_trace *bt = q->blk_trace;
if (bt)
- __blk_add_trace(bt, 0, 0, rw, BLK_TA_GETRQ, 0, 0, NULL);
+ __blk_add_trace(bt, 0, 0, rw, 0, BLK_TA_GETRQ, 0, 0,
+ NULL);
}
}
@@ -833,7 +836,7 @@ static void blk_add_trace_sleeprq(void *ignore,
struct blk_trace *bt = q->blk_trace;
if (bt)
- __blk_add_trace(bt, 0, 0, rw, BLK_TA_SLEEPRQ,
+ __blk_add_trace(bt, 0, 0, rw, 0, BLK_TA_SLEEPRQ,
0, 0, NULL);
}
}
@@ -843,7 +846,7 @@ static void blk_add_trace_plug(void *ignore, struct
request_queue *q)
struct blk_trace *bt = q->blk_trace;
if (bt)
- __blk_add_trace(bt, 0, 0, 0, BLK_TA_PLUG, 0, 0, NULL);
+ __blk_add_trace(bt, 0, 0, 0, 0, BLK_TA_PLUG, 0, 0, NULL);
}
static void blk_add_trace_unplug(void *ignore, struct request_queue *q,
@@ -860,7 +863,7 @@ static void blk_add_trace_unplug(void *ignore, struct
request_queue *q,
else
what = BLK_TA_UNPLUG_TIMER;
- __blk_add_trace(bt, 0, 0, 0, what, 0, sizeof(rpdu), &rpdu);
+ __blk_add_trace(bt, 0, 0, 0, 0, what, 0, sizeof(rpdu), &rpdu);
}
}
@@ -874,8 +877,9 @@ static void blk_add_trace_split(void *ignore,
__be64 rpdu = cpu_to_be64(pdu);
__blk_add_trace(bt, bio->bi_iter.bi_sector,
- bio->bi_iter.bi_size, bio->bi_rw, BLK_TA_SPLIT,
- bio->bi_error, sizeof(rpdu), &rpdu);
+ bio->bi_iter.bi_size, bio->bi_op, bio->bi_rw,
+ BLK_TA_SPLIT, bio->bi_error, sizeof(rpdu),
+ &rpdu);
}
}
@@ -907,7 +911,7 @@ static void blk_add_trace_bio_remap(void *ignore,
r.sector_from = cpu_to_be64(from);
__blk_add_trace(bt, bio->bi_iter.bi_sector, bio->bi_iter.bi_size,
- bio->bi_rw, BLK_TA_REMAP, bio->bi_error,
+ bio->bi_op, bio->bi_rw, BLK_TA_REMAP, bio->bi_error,
sizeof(r), &r);
}
@@ -940,7 +944,7 @@ static void blk_add_trace_rq_remap(void *ignore,
r.sector_from = cpu_to_be64(from);
__blk_add_trace(bt, blk_rq_pos(rq), blk_rq_bytes(rq),
- rq_data_dir(rq), BLK_TA_REMAP, !!rq->errors,
+ rq_data_dir(rq), 0, BLK_TA_REMAP, !!rq->errors,
sizeof(r), &r);
}
@@ -965,10 +969,10 @@ void blk_add_driver_data(struct request_queue *q,
return;
if (rq->cmd_type == REQ_TYPE_BLOCK_PC)
- __blk_add_trace(bt, 0, blk_rq_bytes(rq), 0,
+ __blk_add_trace(bt, 0, blk_rq_bytes(rq), 0, 0,
BLK_TA_DRV_DATA, rq->errors, len, data);
else
- __blk_add_trace(bt, blk_rq_pos(rq), blk_rq_bytes(rq), 0,
+ __blk_add_trace(bt, blk_rq_pos(rq), blk_rq_bytes(rq), 0, 0,
BLK_TA_DRV_DATA, rq->errors, len, data);
}
EXPORT_SYMBOL_GPL(blk_add_driver_data);
@@ -1767,16 +1771,16 @@ void blk_dump_cmd(char *buf, struct request *rq)
}
}
-void blk_fill_rwbs(char *rwbs, u32 rw, int bytes)
+void blk_fill_rwbs(char *rwbs, int op, u32 rw, int bytes)
{
int i = 0;
if (rw & REQ_FLUSH)
rwbs[i++] = 'F';
- if (rw & WRITE)
+ if (op == REQ_OP_WRITE)
rwbs[i++] = 'W';
- else if (rw & REQ_DISCARD)
+ else if (op == REQ_OP_DISCARD)
rwbs[i++] = 'D';
else if (bytes)
rwbs[i++] = 'R';
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:48 UTC
[Ocfs2-devel] [PATCH 29/35] ide cd: do not set REQ_WRITE on requests.
From: Mike Christie <mchristi at redhat.com> The block layer will set the correct READ/WRITE operation flags/fields when creating a request, so there is not need for drivers to set the REQ_WRITE flag. This patch is compile tested only. Signed-off-by: Mike Christie <mchristi at redhat.com> --- drivers/ide/ide-cd_ioctl.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/ide/ide-cd_ioctl.c b/drivers/ide/ide-cd_ioctl.c index 474173e..5887a7a 100644 --- a/drivers/ide/ide-cd_ioctl.c +++ b/drivers/ide/ide-cd_ioctl.c @@ -459,9 +459,6 @@ int ide_cdrom_packet(struct cdrom_device_info *cdi, layer. the packet must be complete, as we do not touch it at all. */ - if (cgc->data_direction == CGC_DATA_WRITE) - flags |= REQ_WRITE; - if (cgc->sense) memset(cgc->sense, 0, sizeof(struct request_sense)); -- 1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:48 UTC
[Ocfs2-devel] [PATCH 30/35] block, fs, drivers: do not test bi_rw for REQ_OPs
From: Mike Christie <mchristi at redhat.com>
We no longer use the bio->bi_rw field for REQ_OPs: REQ_WRITE,
REQ_DISCARD, REQ_WRITE_SAME, so this patch stops checking
for them in bi_rw and also removes the related compat code.
v2:
1. Remove compat code in __get_request.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
block/bio.c | 6 ++---
block/blk-core.c | 34 ++++++++---------------------
block/blk-merge.c | 14 ++++++------
block/blk-mq.c | 3 +--
drivers/ata/libata-scsi.c | 2 +-
drivers/block/brd.c | 2 +-
drivers/block/drbd/drbd_main.c | 15 +++++++------
drivers/block/drbd/drbd_worker.c | 4 ++--
drivers/block/loop.c | 6 ++---
drivers/block/rbd.c | 2 +-
drivers/block/rsxx/dma.c | 2 +-
drivers/block/umem.c | 2 +-
drivers/block/zram/zram_drv.c | 2 +-
drivers/ide/ide-floppy.c | 2 +-
drivers/lightnvm/rrpc.c | 2 +-
drivers/md/bcache/request.c | 10 ++++-----
drivers/md/dm-cache-target.c | 10 +++++----
drivers/md/dm-crypt.c | 2 +-
drivers/md/dm-log-writes.c | 2 +-
drivers/md/dm-raid1.c | 8 +++----
drivers/md/dm-region-hash.c | 4 ++--
drivers/md/dm-stripe.c | 4 ++--
drivers/md/dm-thin.c | 15 ++++++++-----
drivers/md/dm.c | 6 ++---
drivers/md/linear.c | 2 +-
drivers/md/raid0.c | 2 +-
drivers/scsi/osd/osd_initiator.c | 4 ++--
drivers/staging/lustre/lustre/llite/lloop.c | 8 +++----
include/linux/bio.h | 15 ++++++++-----
include/linux/fs.h | 25 +++++++--------------
30 files changed, 100 insertions(+), 115 deletions(-)
diff --git a/block/bio.c b/block/bio.c
index 68df2df..fba4c08 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -669,10 +669,10 @@ struct bio *bio_clone_bioset(struct bio *bio_src, gfp_t
gfp_mask,
bio->bi_iter.bi_sector = bio_src->bi_iter.bi_sector;
bio->bi_iter.bi_size = bio_src->bi_iter.bi_size;
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio->bi_op == REQ_OP_DISCARD)
goto integrity_clone;
- if (bio->bi_rw & REQ_WRITE_SAME) {
+ if (bio->bi_op == REQ_OP_WRITE_SAME) {
bio->bi_io_vec[bio->bi_vcnt++] = bio_src->bi_io_vec[0];
goto integrity_clone;
}
@@ -1795,7 +1795,7 @@ struct bio *bio_split(struct bio *bio, int sectors,
* Discards need a mutable bio_vec to accommodate the payload
* required by the DSM TRIM and UNMAP commands.
*/
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio->bi_op == REQ_OP_DISCARD)
split = bio_clone_bioset(bio, gfp, bs);
else
split = bio_clone_fast(bio, gfp, bs);
diff --git a/block/blk-core.c b/block/blk-core.c
index 60a0edb..bba1a69 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1151,8 +1151,7 @@ static struct request *__get_request(struct request_list
*rl, int op,
blk_rq_init(q, rq);
blk_rq_set_rl(rq, rl);
- /* tmp compat - allow users to check either one for the op */
- rq->cmd_flags = op | op_flags | REQ_ALLOCED;
+ rq->cmd_flags = op_flags | REQ_ALLOCED;
rq->op = op;
/* init elvpriv */
@@ -1704,8 +1703,7 @@ void init_request_from_bio(struct request *req, struct bio
*bio)
{
req->cmd_type = REQ_TYPE_FS;
- /* tmp compat. Allow users to set bi_op or bi_rw */
- req->cmd_flags |= (bio->bi_rw | bio->bi_op) & REQ_COMMON_MASK;
+ req->cmd_flags |= bio->bi_rw & REQ_COMMON_MASK;
if (bio->bi_rw & REQ_RAHEAD)
req->cmd_flags |= REQ_FAILFAST_MASK;
@@ -1855,9 +1853,9 @@ static void handle_bad_sector(struct bio *bio)
char b[BDEVNAME_SIZE];
printk(KERN_INFO "attempt to access beyond end of device\n");
- printk(KERN_INFO "%s: rw=%ld, want=%Lu, limit=%Lu\n",
+ printk(KERN_INFO "%s: rw=%d,%ld, want=%Lu, limit=%Lu\n",
bdevname(bio->bi_bdev, b),
- bio->bi_rw,
+ bio->bi_op, bio->bi_rw,
(unsigned long long)bio_end_sector(bio),
(long long)(i_size_read(bio->bi_bdev->bd_inode) >> 9));
}
@@ -1978,14 +1976,14 @@ generic_make_request_checks(struct bio *bio)
}
}
- if ((bio->bi_rw & REQ_DISCARD) &&
+ if ((bio->bi_op == REQ_OP_DISCARD) &&
(!blk_queue_discard(q) ||
((bio->bi_rw & REQ_SECURE) && !blk_queue_secdiscard(q))))
{
err = -EOPNOTSUPP;
goto end_io;
}
- if (bio->bi_rw & REQ_WRITE_SAME &&
!bdev_write_same(bio->bi_bdev)) {
+ if (bio->bi_op == REQ_OP_WRITE_SAME &&
!bdev_write_same(bio->bi_bdev)) {
err = -EOPNOTSUPP;
goto end_io;
}
@@ -2039,12 +2037,6 @@ blk_qc_t generic_make_request(struct bio *bio)
struct bio_list bio_list_on_stack;
blk_qc_t ret = BLK_QC_T_NONE;
- /* tmp compat. Allow users to set either one or both.
- * This will be removed when we have converted
- * everyone in the next patches.
- */
- bio->bi_rw |= bio->bi_op;
-
if (!generic_make_request_checks(bio))
goto out;
@@ -2114,12 +2106,6 @@ EXPORT_SYMBOL(generic_make_request);
*/
blk_qc_t submit_bio(struct bio *bio)
{
- /* tmp compat. Allow users to set either one or both.
- * This will be removed when we have converted
- * everyone in the next patches.
- */
- bio->bi_rw |= bio->bi_op;
-
/*
* If it's a regular read/write or a barrier with data attached,
* go through the normal accounting stuff before submission.
@@ -2127,12 +2113,12 @@ blk_qc_t submit_bio(struct bio *bio)
if (bio_has_data(bio)) {
unsigned int count;
- if (unlikely(bio->bi_rw & REQ_WRITE_SAME))
+ if (unlikely(bio->bi_op == REQ_OP_WRITE_SAME))
count = bdev_logical_block_size(bio->bi_bdev) >> 9;
else
count = bio_sectors(bio);
- if (bio->bi_rw & WRITE) {
+ if (op_is_write(bio->bi_op)) {
count_vm_events(PGPGOUT, count);
} else {
task_io_account_read(bio->bi_iter.bi_size);
@@ -2143,7 +2129,7 @@ blk_qc_t submit_bio(struct bio *bio)
char b[BDEVNAME_SIZE];
printk(KERN_DEBUG "%s(%d): %s block %Lu on %s (%u sectors)\n",
current->comm, task_pid_nr(current),
- (bio->bi_rw & WRITE) ? "WRITE" : "READ",
+ op_is_write(bio->bi_op) ? "WRITE" : "READ",
(unsigned long long)bio->bi_iter.bi_sector,
bdevname(bio->bi_bdev, b),
count);
@@ -2993,8 +2979,6 @@ EXPORT_SYMBOL_GPL(__blk_end_request_err);
void blk_rq_bio_prep(struct request_queue *q, struct request *rq,
struct bio *bio)
{
- /* tmp compat. Allow users to set bi_op or bi_rw */
- rq->cmd_flags |= bio_data_dir(bio);
rq->op = bio->bi_op;
if (bio_has_data(bio))
diff --git a/block/blk-merge.c b/block/blk-merge.c
index f9e012e..e559864 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -172,9 +172,9 @@ void blk_queue_split(struct request_queue *q, struct bio
**bio,
struct bio *split, *res;
unsigned nsegs;
- if ((*bio)->bi_rw & REQ_DISCARD)
+ if ((*bio)->bi_op == REQ_OP_DISCARD)
split = blk_bio_discard_split(q, *bio, bs, &nsegs);
- else if ((*bio)->bi_rw & REQ_WRITE_SAME)
+ else if ((*bio)->bi_op == REQ_OP_WRITE_SAME)
split = blk_bio_write_same_split(q, *bio, bs, &nsegs);
else
split = blk_bio_segment_split(q, *bio, q->bio_split, &nsegs);
@@ -213,10 +213,10 @@ static unsigned int __blk_recalc_rq_segments(struct
request_queue *q,
* This should probably be returning 0, but blk_add_request_payload()
* (Christoph!!!!)
*/
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio->bi_op == REQ_OP_DISCARD)
return 1;
- if (bio->bi_rw & REQ_WRITE_SAME)
+ if (bio->bi_op == REQ_OP_WRITE_SAME)
return 1;
fbio = bio;
@@ -389,7 +389,7 @@ static int __blk_bios_map_sg(struct request_queue *q, struct
bio *bio,
nsegs = 0;
cluster = blk_queue_cluster(q);
- if (bio->bi_rw & REQ_DISCARD) {
+ if (bio->bi_op == REQ_OP_DISCARD) {
/*
* This is a hack - drivers should be neither modifying the
* biovec, nor relying on bi_vcnt - but because of
@@ -404,7 +404,7 @@ static int __blk_bios_map_sg(struct request_queue *q, struct
bio *bio,
return 0;
}
- if (bio->bi_rw & REQ_WRITE_SAME) {
+ if (bio->bi_op == REQ_OP_WRITE_SAME) {
single_segment:
*sg = sglist;
bvec = bio_iovec(bio);
@@ -443,7 +443,7 @@ int blk_rq_map_sg(struct request_queue *q, struct request
*rq,
}
if (q->dma_drain_size && q->dma_drain_needed(rq)) {
- if (rq->cmd_flags & REQ_WRITE)
+ if (op_is_write(rq->op))
memset(q->dma_drain_buffer, 0, q->dma_drain_size);
sg_unmark_end(sg);
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 5581bac..c3ac92e 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -170,8 +170,7 @@ static void blk_mq_rq_ctx_init(struct request_queue *q,
struct blk_mq_ctx *ctx,
rq->q = q;
rq->mq_ctx = ctx;
rq->op = op;
- /* tmp compat - allow users to check either one for the op */
- rq->cmd_flags |= op | op_flags;
+ rq->cmd_flags |= op_flags;
/* do not touch atomic flags, it needs atomic ops against the timer */
rq->cpu = -1;
INIT_HLIST_NODE(&rq->hash);
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 567859c..cfebc5d 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -1124,7 +1124,7 @@ static int atapi_drain_needed(struct request *rq)
if (likely(rq->cmd_type != REQ_TYPE_BLOCK_PC))
return 0;
- if (!blk_rq_bytes(rq) || (rq->cmd_flags & REQ_WRITE))
+ if (!blk_rq_bytes(rq) || op_is_write(rq->op))
return 0;
return atapi_cmd_type(rq->cmd[0]) == ATAPI_MISC;
diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index cb27190..200284b 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -339,7 +339,7 @@ static blk_qc_t brd_make_request(struct request_queue *q,
struct bio *bio)
if (bio_end_sector(bio) > get_capacity(bdev->bd_disk))
goto io_error;
- if (unlikely(bio->bi_rw & REQ_DISCARD)) {
+ if (unlikely(bio->bi_op == REQ_OP_DISCARD)) {
if (sector & ((PAGE_SIZE >> SECTOR_SHIFT) - 1) ||
bio->bi_iter.bi_size & PAGE_MASK)
goto io_error;
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 4ccfd17..3a93fd2 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -1603,15 +1603,16 @@ static int _drbd_send_zc_ee(struct drbd_peer_device
*peer_device,
return 0;
}
-static u32 bio_flags_to_wire(struct drbd_connection *connection, unsigned long
bi_rw)
+static u32 bio_flags_to_wire(struct drbd_connection *connection,
+ struct bio *bio)
{
if (connection->agreed_pro_version >= 95)
- return (bi_rw & REQ_SYNC ? DP_RW_SYNC : 0) |
- (bi_rw & REQ_FUA ? DP_FUA : 0) |
- (bi_rw & REQ_FLUSH ? DP_FLUSH : 0) |
- (bi_rw & REQ_DISCARD ? DP_DISCARD : 0);
+ return (bio->bi_rw & REQ_SYNC ? DP_RW_SYNC : 0) |
+ (bio->bi_rw & REQ_FUA ? DP_FUA : 0) |
+ (bio->bi_rw & REQ_FLUSH ? DP_FLUSH : 0) |
+ (bio->bi_op == REQ_OP_DISCARD ? DP_DISCARD : 0);
else
- return bi_rw & REQ_SYNC ? DP_RW_SYNC : 0;
+ return bio->bi_rw & REQ_SYNC ? DP_RW_SYNC : 0;
}
/* Used to send write or TRIM aka REQ_DISCARD requests
@@ -1636,7 +1637,7 @@ int drbd_send_dblock(struct drbd_peer_device *peer_device,
struct drbd_request *
p->sector = cpu_to_be64(req->i.sector);
p->block_id = (unsigned long)req;
p->seq_num = cpu_to_be32(atomic_inc_return(&device->packet_seq));
- dp_flags = bio_flags_to_wire(peer_device->connection,
req->master_bio->bi_rw);
+ dp_flags = bio_flags_to_wire(peer_device->connection, req->master_bio);
if (device->state.conn >= C_SYNC_SOURCE &&
device->state.conn <= C_PAUSED_SYNC_T)
dp_flags |= DP_MAY_SET_IN_SYNC;
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index 2a04b43..0949961 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -174,7 +174,7 @@ void drbd_peer_request_endio(struct bio *bio)
struct drbd_peer_request *peer_req = bio->bi_private;
struct drbd_device *device = peer_req->peer_device->device;
int is_write = bio_data_dir(bio) == WRITE;
- int is_discard = !!(bio->bi_rw & REQ_DISCARD);
+ int is_discard = !!(bio->bi_op == REQ_OP_DISCARD);
if (bio->bi_error && __ratelimit(&drbd_ratelimit_state))
drbd_warn(device, "%s: error=%d s=%llus\n",
@@ -248,7 +248,7 @@ void drbd_request_endio(struct bio *bio)
/* to avoid recursion in __req_mod */
if (unlikely(bio->bi_error)) {
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio->bi_op == REQ_OP_DISCARD)
what = (bio->bi_error == -EOPNOTSUPP)
? DISCARD_COMPLETED_NOTSUPP
: DISCARD_COMPLETED_WITH_ERROR;
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index e771bab..1afc03c 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -447,7 +447,7 @@ static int lo_req_flush(struct loop_device *lo, struct
request *rq)
static inline void handle_partial_read(struct loop_cmd *cmd, long bytes)
{
- if (bytes < 0 || (cmd->rq->cmd_flags & REQ_WRITE))
+ if (bytes < 0 || op_is_write(cmd->rq->op))
return;
if (unlikely(bytes < blk_rq_bytes(cmd->rq))) {
@@ -535,7 +535,7 @@ static int do_req_filebacked(struct loop_device *lo, struct
request *rq)
pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset;
- if (rq->cmd_flags & REQ_WRITE) {
+ if (op_is_write(rq->op)) {
if (rq->cmd_flags & REQ_FLUSH)
ret = lo_req_flush(lo, rq);
else if (rq->op == REQ_OP_DISCARD)
@@ -1666,7 +1666,7 @@ static int loop_queue_rq(struct blk_mq_hw_ctx *hctx,
static void loop_handle_cmd(struct loop_cmd *cmd)
{
- const bool write = cmd->rq->cmd_flags & REQ_WRITE;
+ const bool write = op_is_write(cmd->rq->op);
struct loop_device *lo = cmd->rq->q->queuedata;
int ret = 0;
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 1d0f464..721e82d 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -3375,7 +3375,7 @@ static void rbd_queue_workfn(struct work_struct *work)
if (rq->op == REQ_OP_DISCARD)
op_type = OBJ_OP_DISCARD;
- else if (rq->cmd_flags & REQ_WRITE)
+ else if (rq->op == REQ_OP_WRITE)
op_type = OBJ_OP_WRITE;
else
op_type = OBJ_OP_READ;
diff --git a/drivers/block/rsxx/dma.c b/drivers/block/rsxx/dma.c
index cf8cd29..dfc189e 100644
--- a/drivers/block/rsxx/dma.c
+++ b/drivers/block/rsxx/dma.c
@@ -705,7 +705,7 @@ int rsxx_dma_queue_bio(struct rsxx_cardinfo *card,
dma_cnt[i] = 0;
}
- if (bio->bi_rw & REQ_DISCARD) {
+ if (bio->bi_op == REQ_OP_DISCARD) {
bv_len = bio->bi_iter.bi_size;
while (bv_len > 0) {
diff --git a/drivers/block/umem.c b/drivers/block/umem.c
index 7939b9f..a24ccbc 100644
--- a/drivers/block/umem.c
+++ b/drivers/block/umem.c
@@ -462,7 +462,7 @@ static void process_page(unsigned long data)
le32_to_cpu(desc->local_addr)>>9,
le32_to_cpu(desc->transfer_size));
dump_dmastat(card, control);
- } else if ((bio->bi_rw & REQ_WRITE) &&
+ } else if (op_is_write(bio->bi_op) &&
le32_to_cpu(desc->local_addr) >> 9 = card->init_size) {
card->init_size += le32_to_cpu(desc->transfer_size) >> 9;
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 46055db..22c6e00 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -852,7 +852,7 @@ static void __zram_make_request(struct zram *zram, struct
bio *bio)
offset = (bio->bi_iter.bi_sector &
(SECTORS_PER_PAGE - 1)) << SECTOR_SHIFT;
- if (unlikely(bio->bi_rw & REQ_DISCARD)) {
+ if (unlikely(bio->bi_op == REQ_OP_DISCARD)) {
zram_bio_discard(zram, index, offset, bio);
bio_endio(bio);
return;
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 2fb5350..f079d8d 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -206,7 +206,7 @@ static void idefloppy_create_rw_cmd(ide_drive_t *drive,
memcpy(rq->cmd, pc->c, 12);
pc->rq = rq;
- if (rq->cmd_flags & REQ_WRITE)
+ if (cmd == WRITE)
pc->flags |= PC_FLAG_WRITING;
pc->flags |= PC_FLAG_DMA_OK;
diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c
index c509477..5c5b69a 100644
--- a/drivers/lightnvm/rrpc.c
+++ b/drivers/lightnvm/rrpc.c
@@ -904,7 +904,7 @@ static blk_qc_t rrpc_make_rq(struct request_queue *q, struct
bio *bio)
struct nvm_rq *rqd;
int err;
- if (bio->bi_rw & REQ_DISCARD) {
+ if (bio->bi_op == REQ_OP_DISCARD) {
rrpc_discard(rrpc, bio);
return BLK_QC_T_NONE;
}
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index cd6837c..be8cd63f 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -378,7 +378,7 @@ static bool check_should_bypass(struct cached_dev *dc,
struct bio *bio)
if (test_bit(BCACHE_DEV_DETACHING, &dc->disk.flags) ||
c->gc_stats.in_use > CUTOFF_CACHE_ADD ||
- (bio->bi_rw & REQ_DISCARD))
+ (bio->bi_op == REQ_OP_DISCARD))
goto skip;
if (mode == CACHE_MODE_NONE ||
@@ -899,7 +899,7 @@ static void cached_dev_write(struct cached_dev *dc, struct
search *s)
* But check_overlapping drops dirty keys for which io hasn't started,
* so we still want to call it.
*/
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio->bi_op == REQ_OP_DISCARD)
s->iop.bypass = true;
if (should_writeback(dc, s->orig_bio,
@@ -913,7 +913,7 @@ static void cached_dev_write(struct cached_dev *dc, struct
search *s)
s->iop.bio = s->orig_bio;
bio_get(s->iop.bio);
- if (!(bio->bi_rw & REQ_DISCARD) ||
+ if (!(bio->bi_op == REQ_OP_DISCARD) ||
blk_queue_discard(bdev_get_queue(dc->bdev)))
closure_bio_submit(bio, cl);
} else if (s->iop.writeback) {
@@ -993,7 +993,7 @@ static blk_qc_t cached_dev_make_request(struct request_queue
*q,
cached_dev_read(dc, s);
}
} else {
- if ((bio->bi_rw & REQ_DISCARD) &&
+ if ((bio->bi_op == REQ_OP_DISCARD) &&
!blk_queue_discard(bdev_get_queue(dc->bdev)))
bio_endio(bio);
else
@@ -1104,7 +1104,7 @@ static blk_qc_t flash_dev_make_request(struct
request_queue *q,
&KEY(d->id, bio->bi_iter.bi_sector, 0),
&KEY(d->id, bio_end_sector(bio), 0));
- s->iop.bypass = (bio->bi_rw & REQ_DISCARD) != 0;
+ s->iop.bypass = (bio->bi_op == REQ_OP_DISCARD) != 0;
s->iop.writeback = true;
s->iop.bio = bio;
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c
index 2238d6f..95edbaa 100644
--- a/drivers/md/dm-cache-target.c
+++ b/drivers/md/dm-cache-target.c
@@ -788,7 +788,8 @@ static void check_if_tick_bio_needed(struct cache *cache,
struct bio *bio)
spin_lock_irqsave(&cache->lock, flags);
if (cache->need_tick_bio &&
- !(bio->bi_rw & (REQ_FUA | REQ_FLUSH | REQ_DISCARD))) {
+ !(bio->bi_rw & (REQ_FUA | REQ_FLUSH)) &&
+ bio->bi_op != REQ_OP_DISCARD) {
pb->tick = true;
cache->need_tick_bio = false;
}
@@ -851,7 +852,7 @@ static void inc_ds(struct cache *cache, struct bio *bio,
static bool accountable_bio(struct cache *cache, struct bio *bio)
{
return ((bio->bi_bdev == cache->origin_dev->bdev) &&
- !(bio->bi_rw & REQ_DISCARD));
+ bio->bi_op != REQ_OP_DISCARD);
}
static void accounted_begin(struct cache *cache, struct bio *bio)
@@ -1062,7 +1063,8 @@ static void dec_io_migrations(struct cache *cache)
static bool discard_or_flush(struct bio *bio)
{
- return bio->bi_rw & (REQ_FLUSH | REQ_FUA | REQ_DISCARD);
+ return bio->bi_op == REQ_OP_DISCARD ||
+ bio->bi_rw & (REQ_FLUSH | REQ_FUA);
}
static void __cell_defer(struct cache *cache, struct dm_bio_prison_cell *cell)
@@ -1975,7 +1977,7 @@ static void process_deferred_bios(struct cache *cache)
if (bio->bi_rw & REQ_FLUSH)
process_flush_bio(cache, bio);
- else if (bio->bi_rw & REQ_DISCARD)
+ else if (bio->bi_op == REQ_OP_DISCARD)
process_discard_bio(cache, &structs, bio);
else
process_bio(cache, &structs, bio);
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 70fbf11..3a4ddad 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1916,7 +1916,7 @@ static int crypt_map(struct dm_target *ti, struct bio
*bio)
* - for REQ_FLUSH device-mapper core ensures that no IO is in-flight
* - for REQ_DISCARD caller must use flush if IO ordering matters
*/
- if (unlikely(bio->bi_rw & (REQ_FLUSH | REQ_DISCARD))) {
+ if (unlikely(bio->bi_rw & REQ_FLUSH || bio->bi_op ==
REQ_OP_DISCARD)) {
bio->bi_bdev = cc->dev->bdev;
if (bio_sectors(bio))
bio->bi_iter.bi_sector = cc->start +
diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c
index 27630c5..e991405 100644
--- a/drivers/md/dm-log-writes.c
+++ b/drivers/md/dm-log-writes.c
@@ -557,7 +557,7 @@ static int log_writes_map(struct dm_target *ti, struct bio
*bio)
int i = 0;
bool flush_bio = (bio->bi_rw & REQ_FLUSH);
bool fua_bio = (bio->bi_rw & REQ_FUA);
- bool discard_bio = (bio->bi_rw & REQ_DISCARD);
+ bool discard_bio = (bio->bi_op == REQ_OP_DISCARD);
pb->block = NULL;
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 8a86bc3..c4d23da 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -626,7 +626,7 @@ static void write_callback(unsigned long error, void
*context)
* If the bio is discard, return an error, but do not
* degrade the array.
*/
- if (bio->bi_rw & REQ_DISCARD) {
+ if (bio->bi_op == REQ_OP_DISCARD) {
bio->bi_error = -EOPNOTSUPP;
bio_endio(bio);
return;
@@ -665,7 +665,7 @@ static void do_write(struct mirror_set *ms, struct bio *bio)
.client = ms->io_client,
};
- if (bio->bi_rw & REQ_DISCARD) {
+ if (bio->bi_op == REQ_OP_DISCARD) {
io_req.bi_op = REQ_OP_DISCARD;
io_req.mem.type = DM_IO_KMEM;
io_req.mem.ptr.addr = NULL;
@@ -705,7 +705,7 @@ static void do_writes(struct mirror_set *ms, struct bio_list
*writes)
while ((bio = bio_list_pop(writes))) {
if ((bio->bi_rw & REQ_FLUSH) ||
- (bio->bi_rw & REQ_DISCARD)) {
+ (bio->bi_op == REQ_OP_DISCARD)) {
bio_list_add(&sync, bio);
continue;
}
@@ -1253,7 +1253,7 @@ static int mirror_end_io(struct dm_target *ti, struct bio
*bio, int error)
* We need to dec pending if this was a write.
*/
if (rw == WRITE) {
- if (!(bio->bi_rw & (REQ_FLUSH | REQ_DISCARD)))
+ if (!(bio->bi_rw & REQ_FLUSH) && bio->bi_op !=
REQ_OP_DISCARD)
dm_rh_dec(ms->rh, bio_record->write_region);
return error;
}
diff --git a/drivers/md/dm-region-hash.c b/drivers/md/dm-region-hash.c
index 74cb7b9..ce4af57 100644
--- a/drivers/md/dm-region-hash.c
+++ b/drivers/md/dm-region-hash.c
@@ -403,7 +403,7 @@ void dm_rh_mark_nosync(struct dm_region_hash *rh, struct bio
*bio)
return;
}
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio->bi_op == REQ_OP_DISCARD)
return;
/* We must inform the log that the sync count has changed. */
@@ -526,7 +526,7 @@ void dm_rh_inc_pending(struct dm_region_hash *rh, struct
bio_list *bios)
struct bio *bio;
for (bio = bios->head; bio; bio = bio->bi_next) {
- if (bio->bi_rw & (REQ_FLUSH | REQ_DISCARD))
+ if (bio->bi_rw & REQ_FLUSH || bio->bi_op == REQ_OP_DISCARD)
continue;
rh_inc(rh, dm_rh_bio_to_region(rh, bio));
}
diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index 797ddb9..12b1630 100644
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -292,8 +292,8 @@ static int stripe_map(struct dm_target *ti, struct bio *bio)
bio->bi_bdev = sc->stripe[target_bio_nr].dev->bdev;
return DM_MAPIO_REMAPPED;
}
- if (unlikely(bio->bi_rw & REQ_DISCARD) ||
- unlikely(bio->bi_rw & REQ_WRITE_SAME)) {
+ if (unlikely(bio->bi_op == REQ_OP_DISCARD) ||
+ unlikely(bio->bi_op == REQ_OP_WRITE_SAME)) {
target_bio_nr = dm_bio_get_target_bio_nr(bio);
BUG_ON(target_bio_nr >= sc->stripes);
return stripe_map_range(sc, bio, target_bio_nr);
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 6e204e0..7f76e8c 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -705,7 +705,7 @@ static void inc_all_io_entry(struct pool *pool, struct bio
*bio)
{
struct dm_thin_endio_hook *h;
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio->bi_op == REQ_OP_DISCARD)
return;
h = dm_per_bio_data(bio, sizeof(struct dm_thin_endio_hook));
@@ -868,7 +868,8 @@ static void __inc_remap_and_issue_cell(void *context,
struct bio *bio;
while ((bio = bio_list_pop(&cell->bios))) {
- if (bio->bi_rw & (REQ_DISCARD | REQ_FLUSH | REQ_FUA))
+ if (bio->bi_rw & (REQ_FLUSH | REQ_FUA) ||
+ bio->bi_op == REQ_OP_DISCARD)
bio_list_add(&info->defer_bios, bio);
else {
inc_all_io_entry(info->tc->pool, bio);
@@ -1646,7 +1647,8 @@ static void __remap_and_issue_shared_cell(void *context,
while ((bio = bio_list_pop(&cell->bios))) {
if ((bio_data_dir(bio) == WRITE) ||
- (bio->bi_rw & (REQ_DISCARD | REQ_FLUSH | REQ_FUA)))
+ (bio->bi_rw & (REQ_FLUSH | REQ_FUA) ||
+ bio->bi_op == REQ_OP_DISCARD))
bio_list_add(&info->defer_bios, bio);
else {
struct dm_thin_endio_hook *h = dm_per_bio_data(bio, sizeof(struct
dm_thin_endio_hook));;
@@ -2035,7 +2037,7 @@ static void process_thin_deferred_bios(struct thin_c *tc)
break;
}
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio->bi_op == REQ_OP_DISCARD)
pool->process_discard(tc, bio);
else
pool->process_bio(tc, bio);
@@ -2122,7 +2124,7 @@ static void process_thin_deferred_cells(struct thin_c *tc)
return;
}
- if (cell->holder->bi_rw & REQ_DISCARD)
+ if (cell->holder->bi_op == REQ_OP_DISCARD)
pool->process_discard_cell(tc, cell);
else
pool->process_cell(tc, cell);
@@ -2558,7 +2560,8 @@ static int thin_bio_map(struct dm_target *ti, struct bio
*bio)
return DM_MAPIO_SUBMITTED;
}
- if (bio->bi_rw & (REQ_DISCARD | REQ_FLUSH | REQ_FUA)) {
+ if (bio->bi_rw & (REQ_FLUSH | REQ_FUA) ||
+ bio->bi_op == REQ_OP_DISCARD) {
thin_defer_bio_with_throttle(tc, bio);
return DM_MAPIO_SUBMITTED;
}
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 53f7b1e..4bac3dc 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1053,7 +1053,7 @@ static void clone_endio(struct bio *bio)
}
}
- if (unlikely(r == -EREMOTEIO && (bio->bi_rw & REQ_WRITE_SAME)
&&
+ if (unlikely(r == -EREMOTEIO && (bio->bi_op == REQ_OP_WRITE_SAME)
&&
!bdev_get_queue(bio->bi_bdev)->limits.max_write_same_sectors))
disable_write_same(md);
@@ -1737,9 +1737,9 @@ static int __split_and_process_non_flush(struct clone_info
*ci)
struct dm_target *ti;
unsigned len;
- if (unlikely(bio->bi_rw & REQ_DISCARD))
+ if (unlikely(bio->bi_op == REQ_OP_DISCARD))
return __send_discard(ci);
- else if (unlikely(bio->bi_rw & REQ_WRITE_SAME))
+ else if (unlikely(bio->bi_op == REQ_OP_WRITE_SAME))
return __send_write_same(ci);
ti = dm_table_find_target(ci->map, ci->sector);
diff --git a/drivers/md/linear.c b/drivers/md/linear.c
index b7fe7e9..aad82c7 100644
--- a/drivers/md/linear.c
+++ b/drivers/md/linear.c
@@ -252,7 +252,7 @@ static void linear_make_request(struct mddev *mddev, struct
bio *bio)
split->bi_iter.bi_sector = split->bi_iter.bi_sector -
start_sector + data_offset;
- if (unlikely((split->bi_rw & REQ_DISCARD) &&
+ if (unlikely((split->bi_op == REQ_OP_DISCARD) &&
!blk_queue_discard(bdev_get_queue(split->bi_bdev)))) {
/* Just ignore it */
bio_endio(split);
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index 2ea12c6..e0d1b8c 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -488,7 +488,7 @@ static void raid0_make_request(struct mddev *mddev, struct
bio *bio)
split->bi_iter.bi_sector = sector + zone->dev_start +
tmp_dev->data_offset;
- if (unlikely((split->bi_rw & REQ_DISCARD) &&
+ if (unlikely((split->bi_op == REQ_OP_DISCARD) &&
!blk_queue_discard(bdev_get_queue(split->bi_bdev)))) {
/* Just ignore it */
bio_endio(split);
diff --git a/drivers/scsi/osd/osd_initiator.c b/drivers/scsi/osd/osd_initiator.c
index 4e7b440..680d9e4 100644
--- a/drivers/scsi/osd/osd_initiator.c
+++ b/drivers/scsi/osd/osd_initiator.c
@@ -824,7 +824,7 @@ void osd_req_write(struct osd_request *or,
{
_osd_req_encode_common(or, OSD_ACT_WRITE, obj, offset, len);
WARN_ON(or->out.bio || or->out.total_bytes);
- WARN_ON(0 == (bio->bi_rw & REQ_WRITE));
+ WARN_ON(!op_is_write(bio->bi_op));
or->out.bio = bio;
or->out.total_bytes = len;
}
@@ -875,7 +875,7 @@ void osd_req_read(struct osd_request *or,
{
_osd_req_encode_common(or, OSD_ACT_READ, obj, offset, len);
WARN_ON(or->in.bio || or->in.total_bytes);
- WARN_ON(bio->bi_rw & REQ_WRITE);
+ WARN_ON(op_is_write(bio->bi_op));
or->in.bio = bio;
or->in.total_bytes = len;
}
diff --git a/drivers/staging/lustre/lustre/llite/lloop.c
b/drivers/staging/lustre/lustre/llite/lloop.c
index 20fecaf..3c5c55b 100644
--- a/drivers/staging/lustre/lustre/llite/lloop.c
+++ b/drivers/staging/lustre/lustre/llite/lloop.c
@@ -211,9 +211,9 @@ static int do_bio_lustrebacked(struct lloop_device *lo,
struct bio *head)
return io->ci_result;
io->ci_lockreq = CILR_NEVER;
- rw = head->bi_rw;
+ rw = bio_data_dir(head);
for (bio = head; bio ; bio = bio->bi_next) {
- LASSERT(rw == bio->bi_rw);
+ LASSERT(rw == bio_data_dir(bio));
offset = (pgoff_t)(bio->bi_iter.bi_sector << 9) + lo->lo_offset;
bio_for_each_segment(bvec, bio, iter) {
@@ -304,9 +304,9 @@ static unsigned int loop_get_bio(struct lloop_device *lo,
struct bio **req)
/* TODO: need to split the bio, too bad. */
LASSERT(first->bi_vcnt <= LLOOP_MAX_SEGMENTS);
- rw = first->bi_rw;
+ rw = bio_data_dir(first);
bio = &lo->lo_bio;
- while (*bio && (*bio)->bi_rw == rw) {
+ while (*bio && bio_data_dir(*bio) == rw) {
CDEBUG(D_INFO, "bio sector %llu size %u count %u vcnt%u \n",
(unsigned long long)(*bio)->bi_iter.bi_sector,
(*bio)->bi_iter.bi_size,
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 9f0e2cf..1e4b3b5 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -106,18 +106,23 @@ static inline bool bio_has_data(struct bio *bio)
{
if (bio &&
bio->bi_iter.bi_size &&
- !(bio->bi_rw & REQ_DISCARD))
+ !(bio->bi_op == REQ_OP_DISCARD))
return true;
return false;
}
+static inline bool bio_no_advance_iter(struct bio *bio)
+{
+ return bio->bi_op == REQ_OP_DISCARD || bio->bi_op == REQ_OP_WRITE_SAME;
+}
+
static inline bool bio_is_rw(struct bio *bio)
{
if (!bio_has_data(bio))
return false;
- if (bio->bi_rw & BIO_NO_ADVANCE_ITER_MASK)
+ if (bio_no_advance_iter(bio))
return false;
return true;
@@ -225,7 +230,7 @@ static inline void bio_advance_iter(struct bio *bio, struct
bvec_iter *iter,
{
iter->bi_sector += bytes >> 9;
- if (bio->bi_rw & BIO_NO_ADVANCE_ITER_MASK)
+ if (bio_no_advance_iter(bio))
iter->bi_size -= bytes;
else
bvec_iter_advance(bio->bi_io_vec, iter, bytes);
@@ -253,10 +258,10 @@ static inline unsigned bio_segments(struct bio *bio)
* differently:
*/
- if (bio->bi_rw & REQ_DISCARD)
+ if (bio->bi_op == REQ_OP_DISCARD)
return 1;
- if (bio->bi_rw & REQ_WRITE_SAME)
+ if (bio->bi_op == REQ_OP_WRITE_SAME)
return 1;
bio_for_each_segment(bv, bio, iter)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index beabae8..0a10de0 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2448,33 +2448,24 @@ static inline bool op_is_write(int op)
}
/*
- * return READ, READA, or WRITE
+ * return data direction, READ or WRITE
*/
-static inline int bio_rw(struct bio *bio)
+static inline int bio_data_dir(struct bio *bio)
{
- /*
- * tmp cpmpat. Allow users to set either op or rw, until
- * all code is converted in the next patches.
- */
if (op_is_write(bio->bi_op))
return WRITE;
-
- return bio->bi_rw & (RW_MASK | RWA_MASK);
+ return READ;
}
/*
- * return data direction, READ or WRITE
+ * return READ, READA, or WRITE
*/
-static inline int bio_data_dir(struct bio *bio)
+static inline int bio_rw(struct bio *bio)
{
- /*
- * tmp cpmpat. Allow users to set either op or rw, until
- * all code is converted in the next patches.
- */
- if (op_is_write(bio->bi_op))
- return WRITE;
+ if (bio->bi_rw & RWA_MASK)
+ return READA;
- return bio->bi_rw & 1;
+ return bio_data_dir(bio);
}
extern void check_disk_size_change(struct gendisk *disk,
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:48 UTC
[Ocfs2-devel] [PATCH 31/35] block, fs: remove old REQ definitions.
From: Mike Christie <mchristi at redhat.com>
We no longer use REQ_WRITE. REQ_WRITE_SAME and REQ_DISCARD,
so this patch removes them.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
include/linux/blk_types.h | 21 ++++++---------------
include/linux/fs.h | 21 +++++++++++----------
include/trace/events/f2fs.h | 1 -
3 files changed, 17 insertions(+), 26 deletions(-)
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 6e49c91..b4251ed 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -151,7 +151,6 @@ struct bio {
*/
enum rq_flag_bits {
/* common flags */
- __REQ_WRITE, /* not set, read. set, write */
__REQ_FAILFAST_DEV, /* no driver retries of device errors */
__REQ_FAILFAST_TRANSPORT, /* no driver retries of transport errors */
__REQ_FAILFAST_DRIVER, /* no driver retries of driver errors */
@@ -159,9 +158,7 @@ enum rq_flag_bits {
__REQ_SYNC, /* request is sync (sync write or read) */
__REQ_META, /* metadata io request */
__REQ_PRIO, /* boost priority in cfq */
- __REQ_DISCARD, /* request to discard sectors */
- __REQ_SECURE, /* secure discard (used with __REQ_DISCARD) */
- __REQ_WRITE_SAME, /* write same block many times */
+ __REQ_SECURE, /* secure discard (used with REQ_OP_DISCARD) */
__REQ_NOIDLE, /* don't anticipate more IO after this one */
__REQ_INTEGRITY, /* I/O includes block integrity payload */
@@ -197,28 +194,22 @@ enum rq_flag_bits {
__REQ_NR_BITS, /* stops here */
};
-#define REQ_WRITE (1ULL << __REQ_WRITE)
#define REQ_FAILFAST_DEV (1ULL << __REQ_FAILFAST_DEV)
#define REQ_FAILFAST_TRANSPORT (1ULL << __REQ_FAILFAST_TRANSPORT)
#define REQ_FAILFAST_DRIVER (1ULL << __REQ_FAILFAST_DRIVER)
#define REQ_SYNC (1ULL << __REQ_SYNC)
#define REQ_META (1ULL << __REQ_META)
#define REQ_PRIO (1ULL << __REQ_PRIO)
-#define REQ_DISCARD (1ULL << __REQ_DISCARD)
-#define REQ_WRITE_SAME (1ULL << __REQ_WRITE_SAME)
#define REQ_NOIDLE (1ULL << __REQ_NOIDLE)
#define REQ_INTEGRITY (1ULL << __REQ_INTEGRITY)
#define REQ_FAILFAST_MASK \
(REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER)
#define REQ_COMMON_MASK \
- (REQ_WRITE | REQ_FAILFAST_MASK | REQ_SYNC | REQ_META | REQ_PRIO | \
- REQ_DISCARD | REQ_WRITE_SAME | REQ_NOIDLE | REQ_FLUSH | REQ_FUA | \
- REQ_SECURE | REQ_INTEGRITY)
+ (REQ_FAILFAST_MASK | REQ_SYNC | REQ_META | REQ_PRIO | REQ_NOIDLE | \
+ REQ_FLUSH | REQ_FUA | REQ_SECURE | REQ_INTEGRITY)
#define REQ_CLONE_MASK REQ_COMMON_MASK
-#define BIO_NO_ADVANCE_ITER_MASK (REQ_DISCARD|REQ_WRITE_SAME)
-
/* This mask is used for both bio and request merge checking */
#define REQ_NOMERGE_FLAGS \
(REQ_NOMERGE | REQ_STARTED | REQ_SOFTBARRIER | REQ_FLUSH | REQ_FUA |
REQ_FLUSH_SEQ)
@@ -250,9 +241,9 @@ enum rq_flag_bits {
enum req_op {
REQ_OP_READ,
- REQ_OP_WRITE = REQ_WRITE,
- REQ_OP_DISCARD = REQ_DISCARD,
- REQ_OP_WRITE_SAME = REQ_WRITE_SAME,
+ REQ_OP_WRITE,
+ REQ_OP_DISCARD, /* request to discard sectors */
+ REQ_OP_WRITE_SAME, /* write same block many times */
};
typedef unsigned int blk_qc_t;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 0a10de0..7b57bb3 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -153,9 +153,10 @@ typedef void (dax_iodone_t)(struct buffer_head *bh_map, int
uptodate);
#define CHECK_IOVEC_ONLY -1
/*
- * The below are the various read and write types that we support. Some of
+ * The below are the various read and write flags that we support. Some of
* them include behavioral modifiers that send information down to the
- * block layer and IO scheduler. Terminology:
+ * block layer and IO scheduler. They should be used along with a req_op.
+ * Terminology:
*
* The block layer uses device plugging to defer IO a little bit, in
* the hope that we will see more IO very shortly. This increases
@@ -194,19 +195,19 @@ typedef void (dax_iodone_t)(struct buffer_head *bh_map,
int uptodate);
* non-volatile media on completion.
*
*/
-#define RW_MASK REQ_WRITE
+#define RW_MASK REQ_OP_WRITE
#define RWA_MASK REQ_RAHEAD
-#define READ 0
+#define READ REQ_OP_READ
#define WRITE RW_MASK
#define READA RWA_MASK
-#define READ_SYNC (READ | REQ_SYNC)
-#define WRITE_SYNC (WRITE | REQ_SYNC | REQ_NOIDLE)
-#define WRITE_ODIRECT (WRITE | REQ_SYNC)
-#define WRITE_FLUSH (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_FLUSH)
-#define WRITE_FUA (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_FUA)
-#define WRITE_FLUSH_FUA (WRITE | REQ_SYNC | REQ_NOIDLE | REQ_FLUSH | REQ_FUA)
+#define READ_SYNC REQ_SYNC
+#define WRITE_SYNC (REQ_SYNC | REQ_NOIDLE)
+#define WRITE_ODIRECT REQ_SYNC
+#define WRITE_FLUSH (REQ_SYNC | REQ_NOIDLE | REQ_FLUSH)
+#define WRITE_FUA (REQ_SYNC | REQ_NOIDLE | REQ_FUA)
+#define WRITE_FLUSH_FUA (REQ_SYNC | REQ_NOIDLE | REQ_FLUSH | REQ_FUA)
/*
* Attribute flags. These should be or-ed together to figure out what
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index db75d69..20f708e 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -31,7 +31,6 @@ TRACE_DEFINE_ENUM(BG_GC);
TRACE_DEFINE_ENUM(LFS);
TRACE_DEFINE_ENUM(SSR);
TRACE_DEFINE_ENUM(__REQ_RAHEAD);
-TRACE_DEFINE_ENUM(__REQ_WRITE);
TRACE_DEFINE_ENUM(__REQ_SYNC);
TRACE_DEFINE_ENUM(__REQ_NOIDLE);
TRACE_DEFINE_ENUM(__REQ_FLUSH);
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:48 UTC
[Ocfs2-devel] [PATCH 32/35] block: shrink bi_rw and bi_op
From: Mike Christie <mchristi at redhat.com>
There is no need for bi_op/op and bi_rw to be so large
now, so this patch shrinks them.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
block/blk-core.c | 2 +-
drivers/md/dm-flakey.c | 2 +-
drivers/md/raid5.c | 13 +++++++------
fs/btrfs/check-integrity.c | 4 ++--
fs/btrfs/inode.c | 2 +-
include/linux/bio.h | 13 ++-----------
include/linux/blk_types.h | 11 +++--------
include/linux/blkdev.h | 2 +-
8 files changed, 18 insertions(+), 31 deletions(-)
diff --git a/block/blk-core.c b/block/blk-core.c
index bba1a69..5436c19 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1853,7 +1853,7 @@ static void handle_bad_sector(struct bio *bio)
char b[BDEVNAME_SIZE];
printk(KERN_INFO "attempt to access beyond end of device\n");
- printk(KERN_INFO "%s: rw=%d,%ld, want=%Lu, limit=%Lu\n",
+ printk(KERN_INFO "%s: rw=%d,%u, want=%Lu, limit=%Lu\n",
bdevname(bio->bi_bdev, b),
bio->bi_op, bio->bi_rw,
(unsigned long long)bio_end_sector(bio),
diff --git a/drivers/md/dm-flakey.c b/drivers/md/dm-flakey.c
index b7341de..29b99fb 100644
--- a/drivers/md/dm-flakey.c
+++ b/drivers/md/dm-flakey.c
@@ -266,7 +266,7 @@ static void corrupt_bio_data(struct bio *bio, struct
flakey_c *fc)
data[fc->corrupt_bio_byte - 1] = fc->corrupt_bio_value;
DMDEBUG("Corrupting data bio=%p by writing %u to byte %u "
- "(rw=%c bi_rw=%lu bi_sector=%llu cur_bytes=%u)\n",
+ "(rw=%c bi_rw=%u bi_sector=%llu cur_bytes=%u)\n",
bio, fc->corrupt_bio_value, fc->corrupt_bio_byte,
(bio_data_dir(bio) == WRITE) ? 'w' : 'r', bio->bi_rw,
(unsigned long long)bio->bi_iter.bi_sector, bio_bytes);
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 0c53ca2..e9bc323 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -1015,9 +1015,9 @@ again:
: raid5_end_read_request;
bi->bi_private = sh;
- pr_debug("%s: for %llu schedule op %ld on disc %d\n",
+ pr_debug("%s: for %llu schedule op %d,%u on disc %d\n",
__func__, (unsigned long long)sh->sector,
- bi->bi_rw, i);
+ bi->bi_op, bi->bi_rw, i);
atomic_inc(&sh->count);
if (sh != head_sh)
atomic_inc(&head_sh->count);
@@ -1067,10 +1067,10 @@ again:
rbi->bi_end_io = raid5_end_write_request;
rbi->bi_private = sh;
- pr_debug("%s: for %llu schedule op %ld on "
+ pr_debug("%s: for %llu schedule op %d,%u on "
"replacement disc %d\n",
__func__, (unsigned long long)sh->sector,
- rbi->bi_rw, i);
+ rbi->bi_op, rbi->bi_rw, i);
atomic_inc(&sh->count);
if (sh != head_sh)
atomic_inc(&head_sh->count);
@@ -1102,8 +1102,9 @@ again:
if (!rdev && !rrdev) {
if (op_is_write(op))
set_bit(STRIPE_DEGRADED, &sh->state);
- pr_debug("skip op %ld on disc %d for sector %llu\n",
- bi->bi_rw, i, (unsigned long long)sh->sector);
+ pr_debug("skip op %d,%u on disc %d for sector %llu\n",
+ bi->bi_op, bi->bi_rw, i,
+ (unsigned long long)sh->sector);
clear_bit(R5_LOCKED, &sh->dev[i].flags);
set_bit(STRIPE_HANDLE, &sh->state);
}
diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c
index d95c323..9dc4394 100644
--- a/fs/btrfs/check-integrity.c
+++ b/fs/btrfs/check-integrity.c
@@ -2941,7 +2941,7 @@ static void __btrfsic_submit_bio(struct bio *bio)
if (dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
printk(KERN_INFO
- "submit_bio(rw=%d,0x%lx, bi_vcnt=%u,"
+ "submit_bio(rw=%d,0x%x, bi_vcnt=%u,"
" bi_sector=%llu (bytenr %llu), bi_bdev=%p)\n",
bio->bi_op, bio->bi_rw, bio->bi_vcnt,
(unsigned long long)bio->bi_iter.bi_sector,
@@ -2984,7 +2984,7 @@ static void __btrfsic_submit_bio(struct bio *bio)
if (dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
printk(KERN_INFO
- "submit_bio(rw=%d,0x%lx FLUSH, bdev=%p)\n",
+ "submit_bio(rw=%d,0x%x FLUSH, bdev=%p)\n",
bio->bi_op, bio->bi_rw, bio->bi_bdev);
if (!dev_state->dummy_block_for_bio_bh_flush.is_iodone) {
if ((dev_state->state->print_mask &
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index a3132d6..dbec3cf 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -8132,7 +8132,7 @@ static void btrfs_end_dio_bio(struct bio *bio)
if (err)
btrfs_warn(BTRFS_I(dip->inode)->root->fs_info,
- "direct IO failed ino %llu rw %d,%lu sector %#Lx len %u err no
%d",
+ "direct IO failed ino %llu rw %d,0x%x sector %#Lx len %u err no
%d",
btrfs_ino(dip->inode), bio->bi_op, bio->bi_rw,
(unsigned long long)bio->bi_iter.bi_sector,
bio->bi_iter.bi_size, err);
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 1e4b3b5..c91afc1 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -44,18 +44,9 @@
#define BIO_MAX_SIZE (BIO_MAX_PAGES << PAGE_CACHE_SHIFT)
#define BIO_MAX_SECTORS (BIO_MAX_SIZE >> 9)
-/*
- * upper 16 bits of bi_rw define the io priority of this bio
- */
-#define BIO_PRIO_SHIFT (8 * sizeof(unsigned long) - IOPRIO_BITS)
-#define bio_prio(bio) ((bio)->bi_rw >> BIO_PRIO_SHIFT)
+#define bio_prio(bio) (bio)->bi_ioprio
#define bio_prio_valid(bio) ioprio_valid(bio_prio(bio))
-
-#define bio_set_prio(bio, prio) do { \
- WARN_ON(prio >= (1 << IOPRIO_BITS)); \
- (bio)->bi_rw &= ((1UL << BIO_PRIO_SHIFT) - 1); \
- (bio)->bi_rw |= ((unsigned long) (prio) << BIO_PRIO_SHIFT); \
-} while (0)
+#define bio_set_prio(bio, prio) ((bio)->bi_ioprio = prio)
/*
* various member access, note that bio_data should of course not be used
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index b4251ed..498f395 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -48,14 +48,9 @@ struct bio {
struct block_device *bi_bdev;
unsigned int bi_flags; /* status, command, etc */
int bi_error;
- unsigned long bi_rw; /* bottom bits rq_flags_bits
- * top bits priority
- */
- /*
- * this will be a u8 in the next patches and bi_rw can be shrunk to
- * a u32. For compat in these transistional patches op is a int here.
- */
- int bi_op; /* REQ_OP */
+ unsigned int bi_rw; /* rq_flag_bits */
+ unsigned short bi_ioprio;
+ u8 bi_op; /* REQ_OP */
struct bvec_iter bi_iter;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 1c01a41..97079eb 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -96,7 +96,7 @@ struct request {
struct request_queue *q;
struct blk_mq_ctx *mq_ctx;
- int op;
+ u8 op;
u64 cmd_flags;
unsigned cmd_type;
unsigned long atomic_flags;
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:48 UTC
[Ocfs2-devel] [PATCH 33/35] block, drivers: add REQ_OP_FLUSH operation
From: Mike Christie <mchristi at redhat.com>
This adds a REQ_OP_FLUSH operation that is sent to request_fn
based drivers by the block layer's flush code, instead of
sending requests with the request->cmd_flags REQ_FLUSH bit set.
For the following 3 flush related patches, I have not tested
every driver. I have only tested scsi with xfs and btrfs.
v2.
1. Fix kbuild failures. Forgot to update ubd driver.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
Documentation/block/writeback_cache_control.txt | 6 +++---
arch/um/drivers/ubd_kern.c | 2 +-
block/blk-flush.c | 6 +++---
drivers/block/loop.c | 4 ++--
drivers/block/nbd.c | 2 +-
drivers/block/osdblk.c | 2 +-
drivers/block/ps3disk.c | 4 ++--
drivers/block/skd_main.c | 2 +-
drivers/block/virtio_blk.c | 2 +-
drivers/block/xen-blkfront.c | 8 ++++----
drivers/ide/ide-disk.c | 2 +-
drivers/md/dm.c | 2 +-
drivers/mmc/card/block.c | 5 ++---
drivers/mmc/card/queue.h | 2 +-
drivers/mtd/mtd_blkdevs.c | 2 +-
drivers/nvme/host/pci.c | 2 +-
drivers/scsi/sd.c | 7 +++----
include/linux/blk_types.h | 1 +
include/linux/blkdev.h | 3 +++
kernel/trace/blktrace.c | 5 ++++-
20 files changed, 37 insertions(+), 32 deletions(-)
diff --git a/Documentation/block/writeback_cache_control.txt
b/Documentation/block/writeback_cache_control.txt
index 83407d3..ea5550f 100644
--- a/Documentation/block/writeback_cache_control.txt
+++ b/Documentation/block/writeback_cache_control.txt
@@ -73,9 +73,9 @@ doing:
blk_queue_flush(sdkp->disk->queue, REQ_FLUSH);
-and handle empty REQ_FLUSH requests in its prep_fn/request_fn. Note that
+and handle empty REQ_OP_FLUSH requests in its prep_fn/request_fn. Note that
REQ_FLUSH requests with a payload are automatically turned into a sequence
-of an empty REQ_FLUSH request followed by the actual write by the block
+of an empty REQ_OP_FLUSH request followed by the actual write by the block
layer. For devices that also support the FUA bit the block layer needs
to be told to pass through the REQ_FUA bit using:
@@ -83,4 +83,4 @@ to be told to pass through the REQ_FUA bit using:
and the driver must handle write requests that have the REQ_FUA bit set
in prep_fn/request_fn. If the FUA bit is not natively supported the block
-layer turns it into an empty REQ_FLUSH request after the actual write.
+layer turns it into an empty REQ_OP_FLUSH request after the actual write.
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 39ba207..a7dc382 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -1286,7 +1286,7 @@ static void do_ubd_request(struct request_queue *q)
req = dev->request;
- if (req->cmd_flags & REQ_FLUSH) {
+ if (req->op == REQ_OP_FLUSH) {
io_req = kmalloc(sizeof(struct io_thread_req),
GFP_ATOMIC);
if (io_req == NULL) {
diff --git a/block/blk-flush.c b/block/blk-flush.c
index e01d3ac..070d7c7 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -29,7 +29,7 @@
* The actual execution of flush is double buffered. Whenever a request
* needs to execute PRE or POSTFLUSH, it queues at
* fq->flush_queue[fq->flush_pending_idx]. Once certain criteria are
met, a
- * flush is issued and the pending_idx is toggled. When the flush
+ * REQ_OP_FLUSH is issued and the pending_idx is toggled. When the flush
* completes, all the requests which were pending are proceeded to the next
* step. This allows arbitrary merging of different types of FLUSH/FUA
* requests.
@@ -329,8 +329,8 @@ static bool blk_kick_flush(struct request_queue *q, struct
blk_flush_queue *fq)
}
flush_rq->cmd_type = REQ_TYPE_FS;
- flush_rq->cmd_flags = WRITE_FLUSH | REQ_FLUSH_SEQ;
- flush_rq->op = REQ_OP_WRITE;
+ flush_rq->cmd_flags = REQ_SYNC | REQ_NOIDLE | REQ_FLUSH_SEQ;
+ flush_rq->op = REQ_OP_FLUSH;
flush_rq->rq_disk = first_rq->rq_disk;
flush_rq->end_io = flush_end_io;
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 1afc03c..a3d1293 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -536,7 +536,7 @@ static int do_req_filebacked(struct loop_device *lo, struct
request *rq)
pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset;
if (op_is_write(rq->op)) {
- if (rq->cmd_flags & REQ_FLUSH)
+ if (rq->op == REQ_OP_FLUSH)
ret = lo_req_flush(lo, rq);
else if (rq->op == REQ_OP_DISCARD)
ret = lo_discard(lo, rq, pos);
@@ -1653,7 +1653,7 @@ static int loop_queue_rq(struct blk_mq_hw_ctx *hctx,
if (lo->lo_state != Lo_bound)
return -EIO;
- if (lo->use_dio && (!(cmd->rq->cmd_flags & REQ_FLUSH) ||
+ if (lo->use_dio && (cmd->rq->op != REQ_OP_FLUSH ||
cmd->rq->op == REQ_OP_DISCARD))
cmd->use_aio = true;
else
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index dd8f3e9..3b4be71 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -244,7 +244,7 @@ static int nbd_send_req(struct nbd_device *nbd, struct
request *req)
type = NBD_CMD_DISC;
else if (req->op == REQ_OP_DISCARD)
type = NBD_CMD_TRIM;
- else if (req->cmd_flags & REQ_FLUSH)
+ else if (req->op == REQ_OP_FLUSH)
type = NBD_CMD_FLUSH;
else if (rq_data_dir(req) == WRITE)
type = NBD_CMD_WRITE;
diff --git a/drivers/block/osdblk.c b/drivers/block/osdblk.c
index 1b709a4..3f8a0a0 100644
--- a/drivers/block/osdblk.c
+++ b/drivers/block/osdblk.c
@@ -321,7 +321,7 @@ static void osdblk_rq_fn(struct request_queue *q)
* driver-specific, etc.
*/
- do_flush = rq->cmd_flags & REQ_FLUSH;
+ do_flush = (rq->op == REQ_OP_FLUSH);
do_write = (rq_data_dir(rq) == WRITE);
if (!do_flush) { /* osd_flush does not use a bio */
diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c
index c120d70..95c524b 100644
--- a/drivers/block/ps3disk.c
+++ b/drivers/block/ps3disk.c
@@ -196,7 +196,7 @@ static void ps3disk_do_request(struct ps3_storage_device
*dev,
dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__);
while ((req = blk_fetch_request(q))) {
- if (req->cmd_flags & REQ_FLUSH) {
+ if (req->op == REQ_OP_FLUSH) {
if (ps3disk_submit_flush_request(dev, req))
break;
} else if (req->cmd_type == REQ_TYPE_FS) {
@@ -256,7 +256,7 @@ static irqreturn_t ps3disk_interrupt(int irq, void *data)
return IRQ_HANDLED;
}
- if (req->cmd_flags & REQ_FLUSH) {
+ if (req->op == REQ_OP_FLUSH) {
read = 0;
op = "flush";
} else {
diff --git a/drivers/block/skd_main.c b/drivers/block/skd_main.c
index f89a0c8..a15cc2e 100644
--- a/drivers/block/skd_main.c
+++ b/drivers/block/skd_main.c
@@ -624,7 +624,7 @@ static void skd_request_fn(struct request_queue *q)
count = blk_rq_sectors(req);
data_dir = rq_data_dir(req);
- if (req->cmd_flags & REQ_FLUSH)
+ if (req->op == REQ_OP_FLUSH)
flush++;
if (req->cmd_flags & REQ_FUA)
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 6ca3549..c6d3bc2 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -172,7 +172,7 @@ static int virtio_queue_rq(struct blk_mq_hw_ctx *hctx,
BUG_ON(req->nr_phys_segments + 2 > vblk->sg_elems);
vbr->req = req;
- if (req->cmd_flags & REQ_FLUSH) {
+ if (req->op == REQ_OP_FLUSH) {
vbr->out_hdr.type = cpu_to_virtio32(vblk->vdev, VIRTIO_BLK_T_FLUSH);
vbr->out_hdr.sector = 0;
vbr->out_hdr.ioprio = cpu_to_virtio32(vblk->vdev,
req_get_ioprio(vbr->req));
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 34e8f1a..55f795d 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -741,7 +741,7 @@ static int blkif_queue_rw_req(struct request *req, struct
blkfront_ring_info *ri
* The indirect operation can only be a BLKIF_OP_READ or
* BLKIF_OP_WRITE
*/
- BUG_ON(req->cmd_flags & (REQ_FLUSH | REQ_FUA));
+ BUG_ON(req->op == REQ_OP_FLUSH || req->cmd_flags & REQ_FUA);
ring_req->operation = BLKIF_OP_INDIRECT;
ring_req->u.indirect.indirect_op = rq_data_dir(req) ?
BLKIF_OP_WRITE : BLKIF_OP_READ;
@@ -753,7 +753,7 @@ static int blkif_queue_rw_req(struct request *req, struct
blkfront_ring_info *ri
ring_req->u.rw.handle = info->handle;
ring_req->operation = rq_data_dir(req) ?
BLKIF_OP_WRITE : BLKIF_OP_READ;
- if (req->cmd_flags & (REQ_FLUSH | REQ_FUA)) {
+ if (req->op == REQ_OP_FLUSH || req->cmd_flags & REQ_FUA) {
/*
* Ideally we can do an unordered flush-to-disk.
* In case the backend onlysupports barriers, use that.
@@ -863,7 +863,7 @@ static inline bool blkif_request_flush_invalid(struct
request *req,
struct blkfront_info *info)
{
return ((req->cmd_type != REQ_TYPE_FS) ||
- ((req->cmd_flags & REQ_FLUSH) &&
+ ((req->op == REQ_OP_FLUSH) &&
!(info->feature_flush & REQ_FLUSH)) ||
((req->cmd_flags & REQ_FUA) &&
!(info->feature_flush & REQ_FUA)));
@@ -2052,7 +2052,7 @@ static int blkif_recover(struct blkfront_info *info)
/*
* Get the bios in the request so we can re-queue them.
*/
- if (copy[i].request->cmd_flags & REQ_FLUSH ||
+ if (copy[i].request->op == REQ_OP_FLUSH ||
copy[i].request->op == REQ_OP_DISCARD ||
copy[i].request->cmd_flags & (REQ_FUA | REQ_SECURE)) {
/*
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 37a8a90..6474ed3 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -431,7 +431,7 @@ static int idedisk_prep_fn(struct request_queue *q, struct
request *rq)
ide_drive_t *drive = q->queuedata;
struct ide_cmd *cmd;
- if (!(rq->cmd_flags & REQ_FLUSH))
+ if (rq->op != REQ_OP_FLUSH)
return BLKPREP_OK;
if (rq->special) {
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 4bac3dc..d54e056 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -2158,7 +2158,7 @@ static void dm_request_fn(struct request_queue *q)
/* always use block 0 to find the target for flushes for now */
pos = 0;
- if (!(rq->cmd_flags & REQ_FLUSH))
+ if (rq->op != REQ_OP_FLUSH)
pos = blk_rq_pos(rq);
if ((dm_request_peeked_before_merge_deadline(md) &&
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 1f84a44..dabd152 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1690,7 +1690,7 @@ static u8 mmc_blk_prep_packed_list(struct mmc_queue *mq,
struct request *req)
!IS_ALIGNED(blk_rq_sectors(next), 8))
break;
- if (next->op == REQ_OP_DISCARD || next->cmd_flags & REQ_FLUSH)
+ if (next->op == REQ_OP_DISCARD || next->op == REQ_OP_FLUSH)
break;
if (rq_data_dir(cur) != rq_data_dir(next))
@@ -2115,7 +2115,6 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct
request *req)
struct mmc_card *card = md->queue.card;
struct mmc_host *host = card->host;
unsigned long flags;
- unsigned int cmd_flags = req ? req->cmd_flags : 0;
if (req && !mq->mqrq_prev->req)
/* claim host only for the first request */
@@ -2139,7 +2138,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct
request *req)
ret = mmc_blk_issue_secdiscard_rq(mq, req);
else
ret = mmc_blk_issue_discard_rq(mq, req);
- } else if (cmd_flags & REQ_FLUSH) {
+ } else if (req && req->op == REQ_OP_FLUSH) {
/* complete ongoing async transfer before issuing flush */
if (card->host->areq)
mmc_blk_issue_rw_rq(mq, NULL);
diff --git a/drivers/mmc/card/queue.h b/drivers/mmc/card/queue.h
index f166e5b..6c67e4e 100644
--- a/drivers/mmc/card/queue.h
+++ b/drivers/mmc/card/queue.h
@@ -3,7 +3,7 @@
static inline bool mmc_req_is_special(struct request *req)
{
- return req && (req->cmd_flags & REQ_FLUSH || req->op ==
REQ_OP_DISCARD);
+ return req && (req->op == REQ_OP_FLUSH || req->op ==
REQ_OP_DISCARD);
}
struct request;
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index b2e0bce..67da1cd 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -87,7 +87,7 @@ static int do_blktrans_request(struct mtd_blktrans_ops *tr,
if (req->cmd_type != REQ_TYPE_FS)
return -EIO;
- if (req->cmd_flags & REQ_FLUSH)
+ if (req->op == REQ_OP_FLUSH)
return tr->flush(dev);
if (blk_rq_pos(req) + blk_rq_cur_sectors(req) >
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index da32c93..4800c1d 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -651,7 +651,7 @@ static int nvme_queue_rq(struct blk_mq_hw_ctx *hctx,
} else {
if (req->cmd_type == REQ_TYPE_DRV_PRIV)
memcpy(&cmnd, req->cmd, sizeof(cmnd));
- else if (req->cmd_flags & REQ_FLUSH)
+ else if (req->op == REQ_OP_FLUSH)
nvme_setup_flush(ns, &cmnd);
else
nvme_setup_rw(ns, req, &cmnd);
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index e8fbd0f..6882ab7 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1143,12 +1143,11 @@ static int sd_init_command(struct scsi_cmnd *cmd)
return sd_setup_discard_cmnd(cmd);
case REQ_OP_WRITE_SAME:
return sd_setup_write_same_cmnd(cmd);
+ case REQ_OP_FLUSH:
+ return sd_setup_flush_cmnd(cmd);
case REQ_OP_READ:
case REQ_OP_WRITE:
- if (rq->cmd_flags & REQ_FLUSH)
- return sd_setup_flush_cmnd(cmd);
- else
- return sd_setup_read_write_cmnd(cmd);
+ return sd_setup_read_write_cmnd(cmd);
default:
BUG();
}
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 498f395..f9e53ca 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -239,6 +239,7 @@ enum req_op {
REQ_OP_WRITE,
REQ_OP_DISCARD, /* request to discard sectors */
REQ_OP_WRITE_SAME, /* write same block many times */
+ REQ_OP_FLUSH, /* request for cache flush */
};
typedef unsigned int blk_qc_t;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 97079eb..9c36ffc 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -651,6 +651,9 @@ static inline bool rq_mergeable(struct request *rq)
if (rq->cmd_type != REQ_TYPE_FS)
return false;
+ if (rq->op == REQ_OP_FLUSH)
+ return false;
+
if (rq->cmd_flags & REQ_NOMERGE_FLAGS)
return false;
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 4a9ac83..3a54c83 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -223,6 +223,8 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t
sector, int bytes,
what |= MASK_TC_BIT(op_flags, FUA);
if (op == REQ_OP_DISCARD)
what |= BLK_TC_ACT(BLK_TC_DISCARD);
+ if (op == REQ_OP_FLUSH)
+ what |= BLK_TC_ACT(BLK_TC_FLUSH);
pid = tsk->pid;
if (act_log_check(bt, what, sector, pid))
@@ -1775,7 +1777,8 @@ void blk_fill_rwbs(char *rwbs, int op, u32 rw, int bytes)
{
int i = 0;
- if (rw & REQ_FLUSH)
+ if (rw & REQ_FLUSH ||
+ op == REQ_OP_FLUSH)
rwbs[i++] = 'F';
if (op == REQ_OP_WRITE)
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:48 UTC
[Ocfs2-devel] [PATCH 34/35] block: add QUEUE_FLAGs for flush and fua
From: Mike Christie <mchristi at redhat.com>
The last patch added a REQ_OP_FLUSH for request_fn drivers
and the next patch renames REQ_FLUSH to REQ_PREFLUSH which
will be used by file systems and make_request_fn drivers.
This leaves REQ_FLUSH/REQ_FUA defined for drivers to tell
the block layer if flush/fua is supported. The names are
confusing and I bet will will accidentally be used by
people to request flushes. To avoid that, this patch adds
QUEUE_FLAGs for flush and fua which drivers will use to
indicate what they support.
v2:
1. Fix kbuild failures. Forgot to update ubd driver.
v3:
1. Rename dm_table_supports_flush callout function argument to
callout_fn.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
arch/um/drivers/ubd_kern.c | 2 +-
block/blk-core.c | 3 +-
block/blk-flush.c | 12 ++++----
block/blk-settings.c | 20 --------------
drivers/block/drbd/drbd_main.c | 3 +-
drivers/block/loop.c | 2 +-
drivers/block/mtip32xx/mtip32xx.c | 3 +-
drivers/block/nbd.c | 6 ++--
drivers/block/osdblk.c | 2 +-
drivers/block/ps3disk.c | 2 +-
drivers/block/skd_main.c | 3 +-
drivers/block/virtio_blk.c | 4 +--
drivers/block/xen-blkback/xenbus.c | 2 +-
drivers/block/xen-blkfront.c | 55 ++++++++++++++++++++++---------------
drivers/ide/ide-disk.c | 6 ++--
drivers/md/bcache/super.c | 4 +--
drivers/md/dm-table.c | 32 +++++++++++++--------
drivers/md/md.c | 3 +-
drivers/md/raid5-cache.c | 3 +-
drivers/mmc/card/block.c | 3 +-
drivers/mtd/mtd_blkdevs.c | 2 +-
drivers/nvme/host/core.c | 6 ++--
drivers/scsi/sd.c | 13 +++++----
drivers/target/target_core_iblock.c | 6 ++--
include/linux/blkdev.h | 6 ++--
25 files changed, 108 insertions(+), 95 deletions(-)
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index a7dc382..44380d6 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -862,7 +862,7 @@ static int ubd_add(int n, char **error_out)
goto out;
}
ubd_dev->queue->queuedata = ubd_dev;
- blk_queue_flush(ubd_dev->queue, REQ_FLUSH);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, ubd_dev->queue);
blk_queue_max_segments(ubd_dev->queue, MAX_SG);
err = ubd_disk_register(UBD_MAJOR, ubd_dev->size, n, &ubd_gendisk[n]);
diff --git a/block/blk-core.c b/block/blk-core.c
index 5436c19..8640b35 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1968,7 +1968,8 @@ generic_make_request_checks(struct bio *bio)
* drivers without flush support don't have to worry
* about them.
*/
- if ((bio->bi_rw & (REQ_FLUSH | REQ_FUA)) && !q->flush_flags)
{
+ if ((bio->bi_rw & (REQ_FLUSH | REQ_FUA)) &&
+ !(blk_queue_flush(q) || blk_queue_fua(q))) {
bio->bi_rw &= ~(REQ_FLUSH | REQ_FUA);
if (!nr_sectors) {
err = 0;
diff --git a/block/blk-flush.c b/block/blk-flush.c
index 070d7c7..e07ca6c 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -95,17 +95,18 @@ enum {
static bool blk_kick_flush(struct request_queue *q,
struct blk_flush_queue *fq);
-static unsigned int blk_flush_policy(unsigned int fflags, struct request *rq)
+static unsigned int blk_flush_policy(struct request *rq)
{
+ struct request_queue *q = rq->q;
unsigned int policy = 0;
if (blk_rq_sectors(rq))
policy |= REQ_FSEQ_DATA;
- if (fflags & REQ_FLUSH) {
+ if (blk_queue_flush(q)) {
if (rq->cmd_flags & REQ_FLUSH)
policy |= REQ_FSEQ_PREFLUSH;
- if (!(fflags & REQ_FUA) && (rq->cmd_flags & REQ_FUA))
+ if (!blk_queue_fua(q) && (rq->cmd_flags & REQ_FUA))
policy |= REQ_FSEQ_POSTFLUSH;
}
return policy;
@@ -385,8 +386,7 @@ static void mq_flush_data_end_io(struct request *rq, int
error)
void blk_insert_flush(struct request *rq)
{
struct request_queue *q = rq->q;
- unsigned int fflags = q->flush_flags; /* may change, cache */
- unsigned int policy = blk_flush_policy(fflags, rq);
+ unsigned int policy = blk_flush_policy(rq);
struct blk_flush_queue *fq = blk_get_flush_queue(q, rq->mq_ctx);
/*
@@ -394,7 +394,7 @@ void blk_insert_flush(struct request *rq)
* REQ_FLUSH and FUA for the driver.
*/
rq->cmd_flags &= ~REQ_FLUSH;
- if (!(fflags & REQ_FUA))
+ if (!blk_queue_fua(q))
rq->cmd_flags &= ~REQ_FUA;
/*
diff --git a/block/blk-settings.c b/block/blk-settings.c
index c7bb666..77dd6da 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -820,26 +820,6 @@ void blk_queue_update_dma_alignment(struct request_queue
*q, int mask)
}
EXPORT_SYMBOL(blk_queue_update_dma_alignment);
-/**
- * blk_queue_flush - configure queue's cache flush capability
- * @q: the request queue for the device
- * @flush: 0, REQ_FLUSH or REQ_FLUSH | REQ_FUA
- *
- * Tell block layer cache flush capability of @q. If it supports
- * flushing, REQ_FLUSH should be set. If it supports bypassing
- * write cache for individual writes, REQ_FUA should be set.
- */
-void blk_queue_flush(struct request_queue *q, unsigned int flush)
-{
- WARN_ON_ONCE(flush & ~(REQ_FLUSH | REQ_FUA));
-
- if (WARN_ON_ONCE(!(flush & REQ_FLUSH) && (flush & REQ_FUA)))
- flush &= ~REQ_FUA;
-
- q->flush_flags = flush & (REQ_FLUSH | REQ_FUA);
-}
-EXPORT_SYMBOL_GPL(blk_queue_flush);
-
void blk_queue_flush_queueable(struct request_queue *q, bool queueable)
{
q->flush_not_queueable = !queueable;
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 3a93fd2..5dd30a5 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -2762,7 +2762,8 @@ enum drbd_ret_code drbd_create_device(struct
drbd_config_context *adm_ctx, unsig
q->backing_dev_info.congested_data = device;
blk_queue_make_request(q, drbd_make_request);
- blk_queue_flush(q, REQ_FLUSH | REQ_FUA);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, q);
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, q);
/* Setting the max_hw_sectors to an odd value of 8kibyte here
This triggers a max_bio_size message upon first attach or connect */
blk_queue_max_hw_sectors(q, DRBD_MAX_BIO_SIZE_SAFE >> 8);
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index a3d1293..297a91f 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -937,7 +937,7 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode,
mapping_set_gfp_mask(mapping, lo->old_gfp_mask & ~(__GFP_IO|__GFP_FS));
if (!(lo_flags & LO_FLAGS_READ_ONLY) && file->f_op->fsync)
- blk_queue_flush(lo->lo_queue, REQ_FLUSH);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, lo->lo_queue);
loop_update_dio(lo);
set_capacity(lo->lo_disk, size);
diff --git a/drivers/block/mtip32xx/mtip32xx.c
b/drivers/block/mtip32xx/mtip32xx.c
index 3995a9e..0c41ce4 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -3910,7 +3910,8 @@ skip_create_disk:
* write back cache is not supported in the device. FUA depends on
* write back cache support, hence setting flush support to zero.
*/
- blk_queue_flush(dd->queue, 0);
+ queue_flag_clear_unlocked(QUEUE_FLAG_FLUSH, dd->queue);
+ queue_flag_clear_unlocked(QUEUE_FLAG_FUA, dd->queue);
/* Signal trim support */
if (dd->trim_supp == true) {
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 3b4be71..f6bda16 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -750,9 +750,11 @@ static int __nbd_ioctl(struct block_device *bdev, struct
nbd_device *nbd,
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD,
nbd->disk->queue);
if (nbd->flags & NBD_FLAG_SEND_FLUSH)
- blk_queue_flush(nbd->disk->queue, REQ_FLUSH);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH,
+ nbd->disk->queue);
else
- blk_queue_flush(nbd->disk->queue, 0);
+ queue_flag_clear_unlocked(QUEUE_FLAG_FLUSH,
+ nbd->disk->queue);
thread = kthread_run(nbd_thread_send, nbd, "%s",
nbd_name(nbd));
diff --git a/drivers/block/osdblk.c b/drivers/block/osdblk.c
index 3f8a0a0..d03f06a 100644
--- a/drivers/block/osdblk.c
+++ b/drivers/block/osdblk.c
@@ -437,7 +437,7 @@ static int osdblk_init_disk(struct osdblk_device *osdev)
blk_queue_stack_limits(q, osd_request_queue(osdev->osd));
blk_queue_prep_rq(q, blk_queue_start_tag);
- blk_queue_flush(q, REQ_FLUSH);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, q);
disk->queue = q;
diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c
index 95c524b..5985fdc 100644
--- a/drivers/block/ps3disk.c
+++ b/drivers/block/ps3disk.c
@@ -468,7 +468,7 @@ static int ps3disk_probe(struct ps3_system_bus_device *_dev)
blk_queue_dma_alignment(queue, dev->blk_size-1);
blk_queue_logical_block_size(queue, dev->blk_size);
- blk_queue_flush(queue, REQ_FLUSH);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, queue);
blk_queue_max_segments(queue, -1);
blk_queue_max_segment_size(queue, dev->bounce_size);
diff --git a/drivers/block/skd_main.c b/drivers/block/skd_main.c
index a15cc2e..68d0e22 100644
--- a/drivers/block/skd_main.c
+++ b/drivers/block/skd_main.c
@@ -4409,7 +4409,8 @@ static int skd_cons_disk(struct skd_device *skdev)
disk->queue = q;
q->queuedata = skdev;
- blk_queue_flush(q, REQ_FLUSH | REQ_FUA);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, q);
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, q);
blk_queue_max_segments(q, skdev->sgs_per_request);
blk_queue_max_hw_sectors(q, SKD_N_MAX_SECTORS);
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index c6d3bc2..b8a508b 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -489,9 +489,9 @@ static void virtblk_update_cache_mode(struct virtio_device
*vdev)
struct virtio_blk *vblk = vdev->priv;
if (writeback)
- blk_queue_flush(vblk->disk->queue, REQ_FLUSH);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, vblk->disk->queue);
else
- blk_queue_flush(vblk->disk->queue, 0);
+ queue_flag_clear_unlocked(QUEUE_FLAG_FLUSH, vblk->disk->queue);
revalidate_disk(vblk->disk);
}
diff --git a/drivers/block/xen-blkback/xenbus.c
b/drivers/block/xen-blkback/xenbus.c
index 876763f..4a8663c 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -478,7 +478,7 @@ static int xen_vbd_create(struct xen_blkif *blkif,
blkif_vdev_t handle,
vbd->type |= VDISK_REMOVABLE;
q = bdev_get_queue(bdev);
- if (q && q->flush_flags)
+ if (q && (blk_queue_flush(q) || blk_queue_fua(q)))
vbd->flush_support = true;
if (q && blk_queue_secdiscard(q))
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 55f795d..356887b 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -194,6 +194,7 @@ struct blkfront_info
unsigned int nr_ring_pages;
struct request_queue *rq;
unsigned int feature_flush;
+ unsigned int feature_fua;
unsigned int feature_discard:1;
unsigned int feature_secdiscard:1;
unsigned int discard_granularity;
@@ -761,19 +762,15 @@ static int blkif_queue_rw_req(struct request *req, struct
blkfront_ring_info *ri
* implement it the same way. (It's also a FLUSH+FUA,
* since it is guaranteed ordered WRT previous writes.)
*/
- switch (info->feature_flush &
- ((REQ_FLUSH|REQ_FUA))) {
- case REQ_FLUSH|REQ_FUA:
+ if (blk_queue_flush(info->rq) &&
+ blk_queue_fua(info->rq))
ring_req->operation BLKIF_OP_WRITE_BARRIER;
- break;
- case REQ_FLUSH:
+ else if (blk_queue_flush(info->rq))
ring_req->operation BLKIF_OP_FLUSH_DISKCACHE;
- break;
- default:
+ else
ring_req->operation = 0;
- }
}
ring_req->u.rw.nr_segments = num_grant;
if (unlikely(require_extra_req)) {
@@ -864,9 +861,9 @@ static inline bool blkif_request_flush_invalid(struct
request *req,
{
return ((req->cmd_type != REQ_TYPE_FS) ||
((req->op == REQ_OP_FLUSH) &&
- !(info->feature_flush & REQ_FLUSH)) ||
+ !(blk_queue_flush(info->rq))) ||
((req->cmd_flags & REQ_FUA) &&
- !(info->feature_flush & REQ_FUA)));
+ !(blk_queue_fua(info->rq))));
}
static int blkif_queue_rq(struct blk_mq_hw_ctx *hctx,
@@ -983,23 +980,30 @@ static int xlvbd_init_blk_queue(struct gendisk *gd, u16
sector_size,
return 0;
}
-static const char *flush_info(unsigned int feature_flush)
+static const char *flush_info(struct blkfront_info *info)
{
- switch (feature_flush & ((REQ_FLUSH | REQ_FUA))) {
- case REQ_FLUSH|REQ_FUA:
+ if (blk_queue_flush(info->rq) && blk_queue_fua(info->rq))
return "barrier: enabled;";
- case REQ_FLUSH:
+ else if (blk_queue_flush(info->rq))
return "flush diskcache: enabled;";
- default:
+ else
return "barrier or flush: disabled;";
- }
}
static void xlvbd_flush(struct blkfront_info *info)
{
- blk_queue_flush(info->rq, info->feature_flush);
+ if (info->feature_flush)
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, info->rq);
+ else
+ queue_flag_clear_unlocked(QUEUE_FLAG_FLUSH, info->rq);
+
+ if (info->feature_fua)
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, info->rq);
+ else
+ queue_flag_clear_unlocked(QUEUE_FLAG_FUA, info->rq);
+
pr_info("blkfront: %s: %s %s %s %s %s\n",
- info->gd->disk_name, flush_info(info->feature_flush),
+ info->gd->disk_name, flush_info(info),
"persistent grants:", info->feature_persistent ?
"enabled;" : "disabled;", "indirect
descriptors:",
info->max_indirect_segments ? "enabled;" :
"disabled;");
@@ -1618,6 +1622,7 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
if (unlikely(error)) {
if (error == -EOPNOTSUPP)
error = 0;
+ info->feature_fua = 0;
info->feature_flush = 0;
xlvbd_flush(info);
}
@@ -2312,6 +2317,7 @@ static void blkfront_gather_backend_features(struct
blkfront_info *info)
unsigned int indirect_segments;
info->feature_flush = 0;
+ info->feature_fua = 0;
err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
"feature-barrier", "%d", &barrier,
@@ -2324,8 +2330,11 @@ static void blkfront_gather_backend_features(struct
blkfront_info *info)
*
* If there are barriers, then we use flush.
*/
- if (!err && barrier)
- info->feature_flush = REQ_FLUSH | REQ_FUA;
+ if (!err && barrier) {
+ info->feature_flush = 1;
+ info->feature_fua = 1;
+ }
+
/*
* And if there is "feature-flush-cache" use that above
* barriers.
@@ -2334,8 +2343,10 @@ static void blkfront_gather_backend_features(struct
blkfront_info *info)
"feature-flush-cache", "%d", &flush,
NULL);
- if (!err && flush)
- info->feature_flush = REQ_FLUSH;
+ if (!err && flush) {
+ info->feature_flush = 1;
+ info->feature_fua = 0;
+ }
err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
"feature-discard", "%d", &discard,
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 6474ed3..4501ca7 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -522,8 +522,8 @@ static int ide_do_setfeature(ide_drive_t *drive, u8 feature,
u8 nsect)
static void update_flush(ide_drive_t *drive)
{
u16 *id = drive->id;
- unsigned flush = 0;
+ queue_flag_clear_unlocked(QUEUE_FLAG_FLUSH, drive->queue);
if (drive->dev_flags & IDE_DFLAG_WCACHE) {
unsigned long long capacity;
int barrier;
@@ -546,12 +546,10 @@ static void update_flush(ide_drive_t *drive)
drive->name, barrier ? "" : "not ");
if (barrier) {
- flush = REQ_FLUSH;
blk_queue_prep_rq(drive->queue, idedisk_prep_fn);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, drive->queue);
}
}
-
- blk_queue_flush(drive->queue, flush);
}
ide_devset_get_flag(wcache, IDE_DFLAG_WCACHE);
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index b11f7f4..3d75a0f 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -820,8 +820,8 @@ static int bcache_device_init(struct bcache_device *d,
unsigned block_size,
clear_bit(QUEUE_FLAG_ADD_RANDOM, &d->disk->queue->queue_flags);
set_bit(QUEUE_FLAG_DISCARD, &d->disk->queue->queue_flags);
- blk_queue_flush(q, REQ_FLUSH|REQ_FUA);
-
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, q);
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, q);
return 0;
}
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 7210e53..1ce40cf 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -1336,13 +1336,21 @@ static void dm_table_verify_integrity(struct dm_table
*t)
static int device_flush_capable(struct dm_target *ti, struct dm_dev *dev,
sector_t start, sector_t len, void *data)
{
- unsigned flush = (*(unsigned *)data);
struct request_queue *q = bdev_get_queue(dev->bdev);
- return q && (q->flush_flags & flush);
+ return q && blk_queue_flush(q);
}
-static bool dm_table_supports_flush(struct dm_table *t, unsigned flush)
+static int device_fua_capable(struct dm_target *ti, struct dm_dev *dev,
+ sector_t start, sector_t len, void *data)
+{
+ struct request_queue *q = bdev_get_queue(dev->bdev);
+
+ return q && blk_queue_fua(q);
+}
+
+static bool dm_table_supports_flush(struct dm_table *t,
+ iterate_devices_callout_fn callout_fn)
{
struct dm_target *ti;
unsigned i = 0;
@@ -1363,7 +1371,7 @@ static bool dm_table_supports_flush(struct dm_table *t,
unsigned flush)
return true;
if (ti->type->iterate_devices &&
- ti->type->iterate_devices(ti, device_flush_capable, &flush))
+ ti->type->iterate_devices(ti, callout_fn, NULL))
return true;
}
@@ -1494,8 +1502,6 @@ static bool dm_table_supports_discards(struct dm_table *t)
void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
struct queue_limits *limits)
{
- unsigned flush = 0;
-
/*
* Copy table's limits to the DM device's request_queue
*/
@@ -1506,12 +1512,14 @@ void dm_table_set_restrictions(struct dm_table *t,
struct request_queue *q,
else
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, q);
- if (dm_table_supports_flush(t, REQ_FLUSH)) {
- flush |= REQ_FLUSH;
- if (dm_table_supports_flush(t, REQ_FUA))
- flush |= REQ_FUA;
- }
- blk_queue_flush(q, flush);
+ if (dm_table_supports_flush(t, device_flush_capable)) {
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, q);
+ if (dm_table_supports_flush(t, device_fua_capable))
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, q);
+ else
+ queue_flag_clear_unlocked(QUEUE_FLAG_FUA, q);
+ } else
+ queue_flag_clear_unlocked(QUEUE_FLAG_FLUSH, q);
if (!dm_table_discard_zeroes_data(t))
q->limits.discard_zeroes_data = 0;
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 8cdd37f..f0604a0 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5040,7 +5040,8 @@ static int md_alloc(dev_t dev, char *name)
disk->fops = &md_fops;
disk->private_data = mddev;
disk->queue = mddev->queue;
- blk_queue_flush(mddev->queue, REQ_FLUSH | REQ_FUA);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, mddev->queue);
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, mddev->queue);
/* Allow extended partitions. This makes the
* 'mdp' device redundant, but we can't really
* remove it now.
diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index da07670..3d88b55 100644
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -1196,6 +1196,7 @@ ioerr:
int r5l_init_log(struct r5conf *conf, struct md_rdev *rdev)
{
+ struct request_queue *q = rdev->bdev->bd_disk->queue;
struct r5l_log *log;
if (PAGE_SIZE != 4096)
@@ -1205,7 +1206,7 @@ int r5l_init_log(struct r5conf *conf, struct md_rdev
*rdev)
return -ENOMEM;
log->rdev = rdev;
- log->need_cache_flush =
(rdev->bdev->bd_disk->queue->flush_flags != 0);
+ log->need_cache_flush = (blk_queue_flush(q) || blk_queue_fua(q));
log->uuid_checksum = crc32c_le(~0, rdev->mddev->uuid,
sizeof(rdev->mddev->uuid));
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index dabd152..bd504b4 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -2276,7 +2276,8 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct
mmc_card *card,
((card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN) ||
card->ext_csd.rel_sectors)) {
md->flags |= MMC_BLK_REL_WR;
- blk_queue_flush(md->queue.queue, REQ_FLUSH | REQ_FUA);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, md->queue.queue);
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, md->queue.queue);
}
if (mmc_card_mmc(card) &&
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index 67da1cd..4462627 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -409,7 +409,7 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new)
goto error3;
if (tr->flush)
- blk_queue_flush(new->rq, REQ_FLUSH);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, new->rq);
new->rq->queuedata = new;
blk_queue_logical_block_size(new->rq, tr->blksize);
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 504a604..bba850d 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1177,8 +1177,10 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl,
unsigned nsid)
}
if (ctrl->stripe_size)
blk_queue_chunk_sectors(ns->queue, ctrl->stripe_size >> 9);
- if (ctrl->vwc & NVME_CTRL_VWC_PRESENT)
- blk_queue_flush(ns->queue, REQ_FLUSH | REQ_FUA);
+ if (ctrl->vwc & NVME_CTRL_VWC_PRESENT) {
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, ns->queue);
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, ns->queue);
+ }
blk_queue_virt_boundary(ns->queue, ctrl->page_size - 1);
disk->major = nvme_major;
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 6882ab7..7aedac3 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -137,15 +137,18 @@ static const char *sd_cache_types[] = {
static void sd_set_flush_flag(struct scsi_disk *sdkp)
{
- unsigned flush = 0;
+ struct request_queue *q = sdkp->disk->queue;
if (sdkp->WCE) {
- flush |= REQ_FLUSH;
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, q);
if (sdkp->DPOFUA)
- flush |= REQ_FUA;
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, q);
+ else
+ queue_flag_clear_unlocked(QUEUE_FLAG_FUA, q);
+ } else {
+ queue_flag_clear_unlocked(QUEUE_FLAG_FUA, q);
+ queue_flag_clear_unlocked(QUEUE_FLAG_FLUSH, q);
}
-
- blk_queue_flush(sdkp->disk->queue, flush);
}
static ssize_t
diff --git a/drivers/target/target_core_iblock.c
b/drivers/target/target_core_iblock.c
index 8d3d197..c9c07e3 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -659,11 +659,11 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist
*sgl, u32 sgl_nents,
* Force writethrough using WRITE_FUA if a volatile write cache
* is not enabled, or if initiator set the Force Unit Access bit.
*/
- if (q->flush_flags & REQ_FUA) {
+ if (blk_queue_fua(q)) {
if (cmd->se_cmd_flags & SCF_FUA) {
op = REQ_OP_WRITE;
op_flags = WRITE_FUA;
- } else if (!(q->flush_flags & REQ_FLUSH)) {
+ } else if (!blk_queue_flush(q)) {
op = REQ_OP_WRITE;
op_flags = WRITE_FUA;
} else {
@@ -812,7 +812,7 @@ static bool iblock_get_write_cache(struct se_device *dev)
struct block_device *bd = ib_dev->ibd_bd;
struct request_queue *q = bdev_get_queue(bd);
- return q->flush_flags & REQ_FLUSH;
+ return blk_queue_flush(q);
}
static const struct target_backend_ops iblock_ops = {
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 9c36ffc..663e3aa 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -434,7 +434,6 @@ struct request_queue {
/*
* for flush operations
*/
- unsigned int flush_flags;
unsigned int flush_not_queueable:1;
struct blk_flush_queue *fq;
@@ -492,6 +491,8 @@ struct request_queue {
#define QUEUE_FLAG_INIT_DONE 20 /* queue is initialized */
#define QUEUE_FLAG_NO_SG_MERGE 21 /* don't attempt to merge SG segments*/
#define QUEUE_FLAG_POLL 22 /* IO polling enabled if set */
+#define QUEUE_FLAG_FLUSH 23 /* supports FLUSH/PREFLUSH */
+#define QUEUE_FLAG_FUA 24 /* supports FUA */
#define QUEUE_FLAG_DEFAULT ((1 << QUEUE_FLAG_IO_STAT) | \
(1 << QUEUE_FLAG_STACKABLE) | \
@@ -580,6 +581,8 @@ static inline void queue_flag_clear(unsigned int flag,
struct request_queue *q)
#define blk_queue_discard(q) test_bit(QUEUE_FLAG_DISCARD,
&(q)->queue_flags)
#define blk_queue_secdiscard(q) (blk_queue_discard(q) && \
test_bit(QUEUE_FLAG_SECDISCARD, &(q)->queue_flags))
+#define blk_queue_flush(q) test_bit(QUEUE_FLAG_FLUSH, &(q)->queue_flags)
+#define blk_queue_fua(q) test_bit(QUEUE_FLAG_FUA, &(q)->queue_flags)
#define blk_noretry_request(rq) \
((rq)->cmd_flags & (REQ_FAILFAST_DEV|REQ_FAILFAST_TRANSPORT| \
@@ -1010,7 +1013,6 @@ extern void blk_queue_update_dma_alignment(struct
request_queue *, int);
extern void blk_queue_softirq_done(struct request_queue *, softirq_done_fn *);
extern void blk_queue_rq_timed_out(struct request_queue *, rq_timed_out_fn *);
extern void blk_queue_rq_timeout(struct request_queue *, unsigned int);
-extern void blk_queue_flush(struct request_queue *q, unsigned int flush);
extern void blk_queue_flush_queueable(struct request_queue *q, bool queueable);
extern struct backing_dev_info *blk_get_backing_dev_info(struct block_device
*bdev);
--
1.8.3.1
mchristi at redhat.com
2016-Feb-24 19:48 UTC
[Ocfs2-devel] [PATCH 35/35] block, drivers, fs: rename REQ_FLUSH to REQ_PREFLUSH
From: Mike Christie <mchristi at redhat.com>
To avoid confusion between REQ_OP_FLUSH, which is handled by
request_fn drivers, and upper layers requesting the block layer
perform a flush sequence along with possibly a WRITE, this patch
renames REQ_FLUSH to REQ_PREFLUSH.
Signed-off-by: Mike Christie <mchristi at redhat.com>
---
Documentation/block/writeback_cache_control.txt | 31 +++++++++++++------------
Documentation/device-mapper/log-writes.txt | 10 ++++----
block/blk-core.c | 12 +++++-----
block/blk-flush.c | 16 ++++++-------
block/blk-mq.c | 4 ++--
drivers/block/drbd/drbd_actlog.c | 4 ++--
drivers/block/drbd/drbd_main.c | 2 +-
drivers/block/drbd/drbd_protocol.h | 2 +-
drivers/block/drbd/drbd_receiver.c | 2 +-
drivers/block/drbd/drbd_req.c | 2 +-
drivers/md/bcache/journal.c | 2 +-
drivers/md/bcache/request.c | 8 +++----
drivers/md/dm-cache-target.c | 12 +++++-----
drivers/md/dm-crypt.c | 7 +++---
drivers/md/dm-era-target.c | 4 ++--
drivers/md/dm-io.c | 2 +-
drivers/md/dm-log-writes.c | 2 +-
drivers/md/dm-raid1.c | 5 ++--
drivers/md/dm-region-hash.c | 4 ++--
drivers/md/dm-snap.c | 6 ++---
drivers/md/dm-stripe.c | 2 +-
drivers/md/dm-thin.c | 8 +++----
drivers/md/dm.c | 12 +++++-----
drivers/md/linear.c | 2 +-
drivers/md/md.c | 2 +-
drivers/md/md.h | 2 +-
drivers/md/multipath.c | 2 +-
drivers/md/raid0.c | 2 +-
drivers/md/raid1.c | 3 ++-
drivers/md/raid10.c | 2 +-
drivers/md/raid5-cache.c | 2 +-
drivers/md/raid5.c | 2 +-
fs/btrfs/check-integrity.c | 8 +++----
fs/jbd2/journal.c | 2 +-
fs/xfs/xfs_buf.c | 2 +-
include/linux/blk_types.h | 8 +++----
include/linux/fs.h | 4 ++--
include/trace/events/f2fs.h | 2 +-
kernel/trace/blktrace.c | 5 ++--
39 files changed, 107 insertions(+), 102 deletions(-)
diff --git a/Documentation/block/writeback_cache_control.txt
b/Documentation/block/writeback_cache_control.txt
index ea5550f..9869f18 100644
--- a/Documentation/block/writeback_cache_control.txt
+++ b/Documentation/block/writeback_cache_control.txt
@@ -20,11 +20,11 @@ a forced cache flush, and the Force Unit Access (FUA) flag
for requests.
Explicit cache flushes
----------------------
-The REQ_FLUSH flag can be OR ed into the r/w flags of a bio submitted from
+The REQ_PREFLUSH flag can be OR ed into the r/w flags of a bio submitted from
the filesystem and will make sure the volatile cache of the storage device
has been flushed before the actual I/O operation is started. This explicitly
guarantees that previously completed write requests are on non-volatile
-storage before the flagged bio starts. In addition the REQ_FLUSH flag can be
+storage before the flagged bio starts. In addition the REQ_PREFLUSH flag can be
set on an otherwise empty bio structure, which causes only an explicit cache
flush without any dependent I/O. It is recommend to use
the blkdev_issue_flush() helper for a pure cache flush.
@@ -41,21 +41,21 @@ signaled after the data has been committed to non-volatile
storage.
Implementation details for filesystems
--------------------------------------
-Filesystems can simply set the REQ_FLUSH and REQ_FUA bits and do not have to
+Filesystems can simply set the REQ_PREFLUSH and REQ_FUA bits and do not have to
worry if the underlying devices need any explicit cache flushing and how
-the Forced Unit Access is implemented. The REQ_FLUSH and REQ_FUA flags
+the Forced Unit Access is implemented. The REQ_PREFLUSH and REQ_FUA flags
may both be set on a single bio.
Implementation details for make_request_fn based block drivers
--------------------------------------------------------------
-These drivers will always see the REQ_FLUSH and REQ_FUA bits as they sit
+These drivers will always see the REQ_PREFLUSH and REQ_FUA bits as they sit
directly below the submit_bio interface. For remapping drivers the REQ_FUA
bits need to be propagated to underlying devices, and a global flush needs
-to be implemented for bios with the REQ_FLUSH bit set. For real device
-drivers that do not have a volatile cache the REQ_FLUSH and REQ_FUA bits
-on non-empty bios can simply be ignored, and REQ_FLUSH requests without
+to be implemented for bios with the REQ_PREFLUSH bit set. For real device
+drivers that do not have a volatile cache the REQ_PREFLUSH and REQ_FUA bits
+on non-empty bios can simply be ignored, and REQ_PREFLUSH requests without
data can be completed successfully without doing any work. Drivers for
devices with volatile caches need to implement the support for these
flags themselves without any help from the block layer.
@@ -65,21 +65,22 @@ Implementation details for request_fn based block drivers
--------------------------------------------------------------
For devices that do not support volatile write caches there is no driver
-support required, the block layer completes empty REQ_FLUSH requests before
-entering the driver and strips off the REQ_FLUSH and REQ_FUA bits from
-requests that have a payload. For devices with volatile write caches the
-driver needs to tell the block layer that it supports flushing caches by
+support required, the block layer completes empty REQ_PREFLUSH requests
+before entering the driver and strips off the REQ_PREFLUSH and REQ_FUA bits
+from requests that have a payload. For devices with volatile write caches
+the driver needs to tell the block layer that it supports flushing caches by
doing:
- blk_queue_flush(sdkp->disk->queue, REQ_FLUSH);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, sdkp->disk->queue);
and handle empty REQ_OP_FLUSH requests in its prep_fn/request_fn. Note that
-REQ_FLUSH requests with a payload are automatically turned into a sequence
+REQ_PREFLUSH requests with a payload are automatically turned into a sequence
of an empty REQ_OP_FLUSH request followed by the actual write by the block
layer. For devices that also support the FUA bit the block layer needs
to be told to pass through the REQ_FUA bit using:
- blk_queue_flush(sdkp->disk->queue, REQ_FLUSH | REQ_FUA);
+ queue_flag_set_unlocked(QUEUE_FLAG_FLUSH, sdkp->disk->queue);
+ queue_flag_set_unlocked(QUEUE_FLAG_FUA, sdkp->disk->queue);
and the driver must handle write requests that have the REQ_FUA bit set
in prep_fn/request_fn. If the FUA bit is not natively supported the block
diff --git a/Documentation/device-mapper/log-writes.txt
b/Documentation/device-mapper/log-writes.txt
index c10f30c..f4ebcba 100644
--- a/Documentation/device-mapper/log-writes.txt
+++ b/Documentation/device-mapper/log-writes.txt
@@ -14,14 +14,14 @@ Log Ordering
We log things in order of completion once we are sure the write is no longer in
cache. This means that normal WRITE requests are not actually logged until the
-next REQ_FLUSH request. This is to make it easier for userspace to replay the
-log in a way that correlates to what is on disk and not what is in cache, to
-make it easier to detect improper waiting/flushing.
+next REQ_PREFLUSH request. This is to make it easier for userspace to replay
+the log in a way that correlates to what is on disk and not what is in cache,
+to make it easier to detect improper waiting/flushing.
This works by attaching all WRITE requests to a list once the write completes.
-Once we see a REQ_FLUSH request we splice this list onto the request and once
+Once we see a REQ_PREFLUSH request we splice this list onto the request and
once
the FLUSH request completes we log all of the WRITEs and then the FLUSH. Only
-completed WRITEs, at the time the REQ_FLUSH is issued, are added in order to
+completed WRITEs, at the time the REQ_PREFLUSH is issued, are added in order to
simulate the worst case scenario with regard to power failures. Consider the
following example (W means write, C means complete):
diff --git a/block/blk-core.c b/block/blk-core.c
index 8640b35..cda8da5 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1029,7 +1029,7 @@ static bool blk_rq_should_init_elevator(struct bio *bio)
* Flush requests do not use the elevator so skip initialization.
* This allows a request to share the flush and elevator data.
*/
- if (bio->bi_rw & (REQ_FLUSH | REQ_FUA))
+ if (bio->bi_rw & (REQ_PREFLUSH | REQ_FUA))
return false;
return true;
@@ -1736,7 +1736,7 @@ static blk_qc_t blk_queue_bio(struct request_queue *q,
struct bio *bio)
return BLK_QC_T_NONE;
}
- if (bio->bi_rw & (REQ_FLUSH | REQ_FUA)) {
+ if (bio->bi_rw & (REQ_PREFLUSH | REQ_FUA)) {
spin_lock_irq(q->queue_lock);
where = ELEVATOR_INSERT_FLUSH;
goto get_rq;
@@ -1968,9 +1968,9 @@ generic_make_request_checks(struct bio *bio)
* drivers without flush support don't have to worry
* about them.
*/
- if ((bio->bi_rw & (REQ_FLUSH | REQ_FUA)) &&
+ if ((bio->bi_rw & (REQ_PREFLUSH | REQ_FUA)) &&
!(blk_queue_flush(q) || blk_queue_fua(q))) {
- bio->bi_rw &= ~(REQ_FLUSH | REQ_FUA);
+ bio->bi_rw &= ~(REQ_PREFLUSH | REQ_FUA);
if (!nr_sectors) {
err = 0;
goto end_io;
@@ -2217,7 +2217,7 @@ int blk_insert_cloned_request(struct request_queue *q,
struct request *rq)
*/
BUG_ON(blk_queued_rq(rq));
- if (rq->cmd_flags & (REQ_FLUSH|REQ_FUA))
+ if (rq->cmd_flags & (REQ_PREFLUSH | REQ_FUA))
where = ELEVATOR_INSERT_FLUSH;
add_acct_request(q, rq, where);
@@ -3311,7 +3311,7 @@ void blk_flush_plug_list(struct blk_plug *plug, bool
from_schedule)
/*
* rq is already accounted, so use raw insert
*/
- if (rq->cmd_flags & (REQ_FLUSH | REQ_FUA))
+ if (rq->cmd_flags & (REQ_PREFLUSH | REQ_FUA))
__elv_add_request(q, rq, ELEVATOR_INSERT_FLUSH);
else
__elv_add_request(q, rq, ELEVATOR_INSERT_SORT_MERGE);
diff --git a/block/blk-flush.c b/block/blk-flush.c
index e07ca6c..e784cd1 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -10,8 +10,8 @@
* optional steps - PREFLUSH, DATA and POSTFLUSH - according to the request
* properties and hardware capability.
*
- * If a request doesn't have data, only REQ_FLUSH makes sense, which
- * indicates a simple flush request. If there is data, REQ_FLUSH indicates
+ * If a request doesn't have data, only REQ_PREFLUSH makes sense, which
+ * indicates a simple flush request. If there is data, REQ_PREFLUSH indicates
* that the device cache should be flushed before the data is executed, and
* REQ_FUA means that the data must be on non-volatile media on request
* completion.
@@ -20,11 +20,11 @@
* difference. The requests are either completed immediately if there's no
* data or executed as normal requests otherwise.
*
- * If the device has writeback cache and supports FUA, REQ_FLUSH is
+ * If the device has writeback cache and supports FUA, REQ_PREFLUSH is
* translated to PREFLUSH but REQ_FUA is passed down directly with DATA.
*
- * If the device has writeback cache and doesn't support FUA, REQ_FLUSH is
- * translated to PREFLUSH and REQ_FUA to POSTFLUSH.
+ * If the device has writeback cache and doesn't support FUA, REQ_PREFLUSH
+ * is translated to PREFLUSH and REQ_FUA to POSTFLUSH.
*
* The actual execution of flush is double buffered. Whenever a request
* needs to execute PRE or POSTFLUSH, it queues at
@@ -104,7 +104,7 @@ static unsigned int blk_flush_policy(struct request *rq)
policy |= REQ_FSEQ_DATA;
if (blk_queue_flush(q)) {
- if (rq->cmd_flags & REQ_FLUSH)
+ if (rq->cmd_flags & REQ_PREFLUSH)
policy |= REQ_FSEQ_PREFLUSH;
if (!blk_queue_fua(q) && (rq->cmd_flags & REQ_FUA))
policy |= REQ_FSEQ_POSTFLUSH;
@@ -391,9 +391,9 @@ void blk_insert_flush(struct request *rq)
/*
* @policy now records what operations need to be done. Adjust
- * REQ_FLUSH and FUA for the driver.
+ * REQ_PREFLUSH and FUA for the driver.
*/
- rq->cmd_flags &= ~REQ_FLUSH;
+ rq->cmd_flags &= ~REQ_PREFLUSH;
if (!blk_queue_fua(q))
rq->cmd_flags &= ~REQ_FUA;
diff --git a/block/blk-mq.c b/block/blk-mq.c
index c3ac92e..121e600 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1246,7 +1246,7 @@ static int blk_mq_direct_issue_request(struct request *rq,
blk_qc_t *cookie)
static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio)
{
const int is_sync = rw_is_sync(bio->bi_op, bio->bi_rw);
- const int is_flush_fua = bio->bi_rw & (REQ_FLUSH | REQ_FUA);
+ const int is_flush_fua = bio->bi_rw & (REQ_PREFLUSH | REQ_FUA);
struct blk_map_ctx data;
struct request *rq;
unsigned int request_count = 0;
@@ -1343,7 +1343,7 @@ done:
static blk_qc_t blk_sq_make_request(struct request_queue *q, struct bio *bio)
{
const int is_sync = rw_is_sync(bio->bi_op, bio->bi_rw);
- const int is_flush_fua = bio->bi_rw & (REQ_FLUSH | REQ_FUA);
+ const int is_flush_fua = bio->bi_rw & (REQ_PREFLUSH | REQ_FUA);
struct blk_plug *plug;
unsigned int request_count = 0;
struct blk_map_ctx data;
diff --git a/drivers/block/drbd/drbd_actlog.c b/drivers/block/drbd/drbd_actlog.c
index 2fa8534..b12ff76 100644
--- a/drivers/block/drbd/drbd_actlog.c
+++ b/drivers/block/drbd/drbd_actlog.c
@@ -148,7 +148,7 @@ static int _drbd_md_sync_page_io(struct drbd_device *device,
device->md_io.error = -ENODEV;
if ((op == REQ_OP_WRITE) && !test_bit(MD_NO_FUA,
&device->flags))
- op_flags |= REQ_FUA | REQ_FLUSH;
+ op_flags |= REQ_FUA | REQ_PREFLUSH;
op_flags |= REQ_SYNC | REQ_NOIDLE;
bio = bio_alloc_drbd(GFP_NOIO);
@@ -848,7 +848,7 @@ int __drbd_change_sync(struct drbd_device *device, sector_t
sector, int size,
unsigned long count = 0;
sector_t esector, nr_sectors;
- /* This would be an empty REQ_FLUSH, be silent. */
+ /* This would be an empty REQ_PREFLUSH, be silent. */
if ((mode == SET_OUT_OF_SYNC) && size == 0)
return 0;
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 5dd30a5..07cd0fc 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -1609,7 +1609,7 @@ static u32 bio_flags_to_wire(struct drbd_connection
*connection,
if (connection->agreed_pro_version >= 95)
return (bio->bi_rw & REQ_SYNC ? DP_RW_SYNC : 0) |
(bio->bi_rw & REQ_FUA ? DP_FUA : 0) |
- (bio->bi_rw & REQ_FLUSH ? DP_FLUSH : 0) |
+ (bio->bi_rw & REQ_PREFLUSH ? DP_FLUSH : 0) |
(bio->bi_op == REQ_OP_DISCARD ? DP_DISCARD : 0);
else
return bio->bi_rw & REQ_SYNC ? DP_RW_SYNC : 0;
diff --git a/drivers/block/drbd/drbd_protocol.h
b/drivers/block/drbd/drbd_protocol.h
index ef92453..129f8c7 100644
--- a/drivers/block/drbd/drbd_protocol.h
+++ b/drivers/block/drbd/drbd_protocol.h
@@ -112,7 +112,7 @@ struct p_header100 {
#define DP_MAY_SET_IN_SYNC 4
#define DP_UNPLUG 8 /* not used anymore */
#define DP_FUA 16 /* equals REQ_FUA */
-#define DP_FLUSH 32 /* equals REQ_FLUSH */
+#define DP_FLUSH 32 /* equals REQ_PREFLUSH */
#define DP_DISCARD 64 /* equals REQ_DISCARD */
#define DP_SEND_RECEIVE_ACK 128 /* This is a proto B write request */
#define DP_SEND_WRITE_ACK 256 /* This is a proto C write request */
diff --git a/drivers/block/drbd/drbd_receiver.c
b/drivers/block/drbd/drbd_receiver.c
index a0b95da..4303731 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -2159,7 +2159,7 @@ static unsigned long wire_flags_to_bio_flags(u32 dpf)
{
return (dpf & DP_RW_SYNC ? REQ_SYNC : 0) |
(dpf & DP_FUA ? REQ_FUA : 0) |
- (dpf & DP_FLUSH ? REQ_FLUSH : 0);
+ (dpf & DP_FLUSH ? REQ_PREFLUSH : 0);
}
static unsigned long wire_flags_to_bio_op(u32 dpf)
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c
index 2255dcf..eef6e95 100644
--- a/drivers/block/drbd/drbd_req.c
+++ b/drivers/block/drbd/drbd_req.c
@@ -1132,7 +1132,7 @@ static int drbd_process_write_request(struct drbd_request
*req)
* replicating, in which case there is no point. */
if (unlikely(req->i.size == 0)) {
/* The only size==0 bios we expect are empty flushes. */
- D_ASSERT(device, req->master_bio->bi_rw & REQ_FLUSH);
+ D_ASSERT(device, req->master_bio->bi_rw & REQ_PREFLUSH);
if (remote)
_req_mod(req, QUEUE_AS_DRBD_BARRIER);
return remote;
diff --git a/drivers/md/bcache/journal.c b/drivers/md/bcache/journal.c
index 68fa0f0..6e0a330 100644
--- a/drivers/md/bcache/journal.c
+++ b/drivers/md/bcache/journal.c
@@ -627,7 +627,7 @@ static void journal_write_unlocked(struct closure *cl)
bio->bi_iter.bi_sector = PTR_OFFSET(k, i);
bio->bi_bdev = ca->bdev;
bio->bi_op = REQ_OP_WRITE;
- bio->bi_rw = REQ_SYNC|REQ_META|REQ_FLUSH|REQ_FUA;
+ bio->bi_rw = REQ_SYNC|REQ_META|REQ_PREFLUSH|REQ_FUA;
bio->bi_iter.bi_size = sectors << 9;
bio->bi_end_io = journal_write_endio;
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index be8cd63f..3947114 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -205,10 +205,10 @@ static void bch_data_insert_start(struct closure *cl)
return bch_data_invalidate(cl);
/*
- * Journal writes are marked REQ_FLUSH; if the original write was a
+ * Journal writes are marked REQ_PREFLUSH; if the original write was a
* flush, it'll wait on the journal write.
*/
- bio->bi_rw &= ~(REQ_FLUSH|REQ_FUA);
+ bio->bi_rw &= ~(REQ_PREFLUSH|REQ_FUA);
do {
unsigned i;
@@ -668,7 +668,7 @@ static inline struct search *search_alloc(struct bio *bio,
s->iop.write_prio = 0;
s->iop.error = 0;
s->iop.flags = 0;
- s->iop.flush_journal = (bio->bi_rw & (REQ_FLUSH|REQ_FUA)) != 0;
+ s->iop.flush_journal = (bio->bi_rw & (REQ_PREFLUSH|REQ_FUA)) != 0;
s->iop.wq = bcache_wq;
return s;
@@ -920,7 +920,7 @@ static void cached_dev_write(struct cached_dev *dc, struct
search *s)
bch_writeback_add(dc);
s->iop.bio = bio;
- if (bio->bi_rw & REQ_FLUSH) {
+ if (bio->bi_rw & REQ_PREFLUSH) {
/* Also need to send a flush to the backing device */
struct bio *flush = bio_alloc_bioset(GFP_NOIO, 0,
dc->disk.bio_split);
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c
index 95edbaa..201bfbf 100644
--- a/drivers/md/dm-cache-target.c
+++ b/drivers/md/dm-cache-target.c
@@ -788,7 +788,7 @@ static void check_if_tick_bio_needed(struct cache *cache,
struct bio *bio)
spin_lock_irqsave(&cache->lock, flags);
if (cache->need_tick_bio &&
- !(bio->bi_rw & (REQ_FUA | REQ_FLUSH)) &&
+ !(bio->bi_rw & (REQ_FUA | REQ_PREFLUSH)) &&
bio->bi_op != REQ_OP_DISCARD) {
pb->tick = true;
cache->need_tick_bio = false;
@@ -830,7 +830,7 @@ static dm_oblock_t get_bio_block(struct cache *cache, struct
bio *bio)
static int bio_triggers_commit(struct cache *cache, struct bio *bio)
{
- return bio->bi_rw & (REQ_FLUSH | REQ_FUA);
+ return bio->bi_rw & (REQ_PREFLUSH | REQ_FUA);
}
/*
@@ -1064,7 +1064,7 @@ static void dec_io_migrations(struct cache *cache)
static bool discard_or_flush(struct bio *bio)
{
return bio->bi_op == REQ_OP_DISCARD ||
- bio->bi_rw & (REQ_FLUSH | REQ_FUA);
+ bio->bi_rw & (REQ_PREFLUSH | REQ_FUA);
}
static void __cell_defer(struct cache *cache, struct dm_bio_prison_cell *cell)
@@ -1609,8 +1609,8 @@ static void process_flush_bio(struct cache *cache, struct
bio *bio)
remap_to_cache(cache, bio, 0);
/*
- * REQ_FLUSH is not directed at any particular block so we don't
- * need to inc_ds(). REQ_FUA's are split into a write + REQ_FLUSH
+ * REQ_PREFLUSH is not directed at any particular block so we don't
+ * need to inc_ds(). REQ_FUA's are split into a write + REQ_PREFLUSH
* by dm-core.
*/
issue(cache, bio);
@@ -1975,7 +1975,7 @@ static void process_deferred_bios(struct cache *cache)
bio = bio_list_pop(&bios);
- if (bio->bi_rw & REQ_FLUSH)
+ if (bio->bi_rw & REQ_PREFLUSH)
process_flush_bio(cache, bio);
else if (bio->bi_op == REQ_OP_DISCARD)
process_discard_bio(cache, &structs, bio);
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 3a4ddad..9481dbc 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -1912,11 +1912,12 @@ static int crypt_map(struct dm_target *ti, struct bio
*bio)
struct crypt_config *cc = ti->private;
/*
- * If bio is REQ_FLUSH or REQ_DISCARD, just bypass crypt queues.
- * - for REQ_FLUSH device-mapper core ensures that no IO is in-flight
+ * If bio is REQ_PREFLUSH or REQ_DISCARD, just bypass crypt queues.
+ * - for REQ_PREFLUSH device-mapper core ensures that no IO is in-flight
* - for REQ_DISCARD caller must use flush if IO ordering matters
*/
- if (unlikely(bio->bi_rw & REQ_FLUSH || bio->bi_op ==
REQ_OP_DISCARD)) {
+ if (unlikely(bio->bi_rw & REQ_PREFLUSH ||
+ bio->bi_op == REQ_OP_DISCARD)) {
bio->bi_bdev = cc->dev->bdev;
if (bio_sectors(bio))
bio->bi_iter.bi_sector = cc->start +
diff --git a/drivers/md/dm-era-target.c b/drivers/md/dm-era-target.c
index 665bf32..2faf49d8 100644
--- a/drivers/md/dm-era-target.c
+++ b/drivers/md/dm-era-target.c
@@ -1540,9 +1540,9 @@ static int era_map(struct dm_target *ti, struct bio *bio)
remap_to_origin(era, bio);
/*
- * REQ_FLUSH bios carry no data, so we're not interested in them.
+ * REQ_PREFLUSH bios carry no data, so we're not interested in them.
*/
- if (!(bio->bi_rw & REQ_FLUSH) &&
+ if (!(bio->bi_rw & REQ_PREFLUSH) &&
(bio_data_dir(bio) == WRITE) &&
!metadata_current_marked(era->md, block)) {
defer_bio(era, bio);
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
index 0f723ca..f96ba41 100644
--- a/drivers/md/dm-io.c
+++ b/drivers/md/dm-io.c
@@ -381,7 +381,7 @@ static void dispatch_io(int op, int op_flags, unsigned int
num_regions,
*/
for (i = 0; i < num_regions; i++) {
*dp = old_pages;
- if (where[i].count || (op_flags & REQ_FLUSH))
+ if (where[i].count || (op_flags & REQ_PREFLUSH))
do_region(op, op_flags, i, where + i, dp, io);
}
diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c
index e991405..73793bd 100644
--- a/drivers/md/dm-log-writes.c
+++ b/drivers/md/dm-log-writes.c
@@ -555,7 +555,7 @@ static int log_writes_map(struct dm_target *ti, struct bio
*bio)
struct bio_vec bv;
size_t alloc_size;
int i = 0;
- bool flush_bio = (bio->bi_rw & REQ_FLUSH);
+ bool flush_bio = (bio->bi_rw & REQ_PREFLUSH);
bool fua_bio = (bio->bi_rw & REQ_FUA);
bool discard_bio = (bio->bi_op == REQ_OP_DISCARD);
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index c4d23da..bd1ba80 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -704,7 +704,7 @@ static void do_writes(struct mirror_set *ms, struct bio_list
*writes)
bio_list_init(&requeue);
while ((bio = bio_list_pop(writes))) {
- if ((bio->bi_rw & REQ_FLUSH) ||
+ if ((bio->bi_rw & REQ_PREFLUSH) ||
(bio->bi_op == REQ_OP_DISCARD)) {
bio_list_add(&sync, bio);
continue;
@@ -1253,7 +1253,8 @@ static int mirror_end_io(struct dm_target *ti, struct bio
*bio, int error)
* We need to dec pending if this was a write.
*/
if (rw == WRITE) {
- if (!(bio->bi_rw & REQ_FLUSH) && bio->bi_op !=
REQ_OP_DISCARD)
+ if (!(bio->bi_rw & REQ_PREFLUSH) &&
+ bio->bi_op != REQ_OP_DISCARD)
dm_rh_dec(ms->rh, bio_record->write_region);
return error;
}
diff --git a/drivers/md/dm-region-hash.c b/drivers/md/dm-region-hash.c
index ce4af57..d257428 100644
--- a/drivers/md/dm-region-hash.c
+++ b/drivers/md/dm-region-hash.c
@@ -398,7 +398,7 @@ void dm_rh_mark_nosync(struct dm_region_hash *rh, struct bio
*bio)
region_t region = dm_rh_bio_to_region(rh, bio);
int recovering = 0;
- if (bio->bi_rw & REQ_FLUSH) {
+ if (bio->bi_rw & REQ_PREFLUSH) {
rh->flush_failure = 1;
return;
}
@@ -526,7 +526,7 @@ void dm_rh_inc_pending(struct dm_region_hash *rh, struct
bio_list *bios)
struct bio *bio;
for (bio = bios->head; bio; bio = bio->bi_next) {
- if (bio->bi_rw & REQ_FLUSH || bio->bi_op == REQ_OP_DISCARD)
+ if (bio->bi_rw & REQ_PREFLUSH || bio->bi_op == REQ_OP_DISCARD)
continue;
rh_inc(rh, dm_rh_bio_to_region(rh, bio));
}
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index 62479ac..f02a6bb8 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -1671,7 +1671,7 @@ static int snapshot_map(struct dm_target *ti, struct bio
*bio)
init_tracked_chunk(bio);
- if (bio->bi_rw & REQ_FLUSH) {
+ if (bio->bi_rw & REQ_PREFLUSH) {
bio->bi_bdev = s->cow->bdev;
return DM_MAPIO_REMAPPED;
}
@@ -1790,7 +1790,7 @@ static int snapshot_merge_map(struct dm_target *ti, struct
bio *bio)
init_tracked_chunk(bio);
- if (bio->bi_rw & REQ_FLUSH) {
+ if (bio->bi_rw & REQ_PREFLUSH) {
if (!dm_bio_get_target_bio_nr(bio))
bio->bi_bdev = s->origin->bdev;
else
@@ -2276,7 +2276,7 @@ static int origin_map(struct dm_target *ti, struct bio
*bio)
bio->bi_bdev = o->dev->bdev;
- if (unlikely(bio->bi_rw & REQ_FLUSH))
+ if (unlikely(bio->bi_rw & REQ_PREFLUSH))
return DM_MAPIO_REMAPPED;
if (bio_rw(bio) != WRITE)
diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index 12b1630..e6f330c 100644
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -286,7 +286,7 @@ static int stripe_map(struct dm_target *ti, struct bio *bio)
uint32_t stripe;
unsigned target_bio_nr;
- if (bio->bi_rw & REQ_FLUSH) {
+ if (bio->bi_rw & REQ_PREFLUSH) {
target_bio_nr = dm_bio_get_target_bio_nr(bio);
BUG_ON(target_bio_nr >= sc->stripes);
bio->bi_bdev = sc->stripe[target_bio_nr].dev->bdev;
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 7f76e8c..15beb41 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -697,7 +697,7 @@ static void remap_to_origin(struct thin_c *tc, struct bio
*bio)
static int bio_triggers_commit(struct thin_c *tc, struct bio *bio)
{
- return (bio->bi_rw & (REQ_FLUSH | REQ_FUA)) &&
+ return (bio->bi_rw & (REQ_PREFLUSH | REQ_FUA)) &&
dm_thin_changed_this_transaction(tc->td);
}
@@ -868,7 +868,7 @@ static void __inc_remap_and_issue_cell(void *context,
struct bio *bio;
while ((bio = bio_list_pop(&cell->bios))) {
- if (bio->bi_rw & (REQ_FLUSH | REQ_FUA) ||
+ if (bio->bi_rw & (REQ_PREFLUSH | REQ_FUA) ||
bio->bi_op == REQ_OP_DISCARD)
bio_list_add(&info->defer_bios, bio);
else {
@@ -1647,7 +1647,7 @@ static void __remap_and_issue_shared_cell(void *context,
while ((bio = bio_list_pop(&cell->bios))) {
if ((bio_data_dir(bio) == WRITE) ||
- (bio->bi_rw & (REQ_FLUSH | REQ_FUA) ||
+ (bio->bi_rw & (REQ_PREFLUSH | REQ_FUA) ||
bio->bi_op == REQ_OP_DISCARD))
bio_list_add(&info->defer_bios, bio);
else {
@@ -2560,7 +2560,7 @@ static int thin_bio_map(struct dm_target *ti, struct bio
*bio)
return DM_MAPIO_SUBMITTED;
}
- if (bio->bi_rw & (REQ_FLUSH | REQ_FUA) ||
+ if (bio->bi_rw & (REQ_PREFLUSH | REQ_FUA) ||
bio->bi_op == REQ_OP_DISCARD) {
thin_defer_bio_with_throttle(tc, bio);
return DM_MAPIO_SUBMITTED;
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index d54e056..eda1e70 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1003,12 +1003,12 @@ static void dec_pending(struct dm_io *io, int error)
if (io_error == DM_ENDIO_REQUEUE)
return;
- if ((bio->bi_rw & REQ_FLUSH) && bio->bi_iter.bi_size) {
+ if ((bio->bi_rw & REQ_PREFLUSH) && bio->bi_iter.bi_size) {
/*
* Preflush done for flush with data, reissue
- * without REQ_FLUSH.
+ * without REQ_PREFLUSH.
*/
- bio->bi_rw &= ~REQ_FLUSH;
+ bio->bi_rw &= ~REQ_PREFLUSH;
queue_io(md, bio);
} else {
/* done with normal IO or empty flush */
@@ -1477,7 +1477,7 @@ EXPORT_SYMBOL_GPL(dm_set_target_max_io_len);
/*
* A target may call dm_accept_partial_bio only from the map routine. It is
- * allowed for all bio types except REQ_FLUSH.
+ * allowed for all bio types except REQ_PREFLUSH.
*
* dm_accept_partial_bio informs the dm that the target only wants to process
* additional n_sectors sectors of the bio and the rest of the data should be
@@ -1507,7 +1507,7 @@ void dm_accept_partial_bio(struct bio *bio, unsigned
n_sectors)
{
struct dm_target_io *tio = container_of(bio, struct dm_target_io, clone);
unsigned bi_size = bio->bi_iter.bi_size >> SECTOR_SHIFT;
- BUG_ON(bio->bi_rw & REQ_FLUSH);
+ BUG_ON(bio->bi_rw & REQ_PREFLUSH);
BUG_ON(bi_size > *tio->len_ptr);
BUG_ON(n_sectors > bi_size);
*tio->len_ptr -= bi_size - n_sectors;
@@ -1782,7 +1782,7 @@ static void __split_and_process_bio(struct mapped_device
*md,
start_io_acct(ci.io);
- if (bio->bi_rw & REQ_FLUSH) {
+ if (bio->bi_rw & REQ_PREFLUSH) {
ci.bio = &ci.md->flush_bio;
ci.sector_count = 0;
error = __send_empty_flush(&ci);
diff --git a/drivers/md/linear.c b/drivers/md/linear.c
index aad82c7..657053e 100644
--- a/drivers/md/linear.c
+++ b/drivers/md/linear.c
@@ -221,7 +221,7 @@ static void linear_make_request(struct mddev *mddev, struct
bio *bio)
struct bio *split;
sector_t start_sector, end_sector, data_offset;
- if (unlikely(bio->bi_rw & REQ_FLUSH)) {
+ if (unlikely(bio->bi_rw & REQ_PREFLUSH)) {
md_flush_request(mddev, bio);
return;
}
diff --git a/drivers/md/md.c b/drivers/md/md.c
index f0604a0..a158211 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -412,7 +412,7 @@ static void md_submit_flush_data(struct work_struct *ws)
/* an empty barrier - all done */
bio_endio(bio);
else {
- bio->bi_rw &= ~REQ_FLUSH;
+ bio->bi_rw &= ~REQ_PREFLUSH;
mddev->pers->make_request(mddev, bio);
}
diff --git a/drivers/md/md.h b/drivers/md/md.h
index 2e0918f..b4f3352 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -424,7 +424,7 @@ struct mddev {
/* Generic flush handling.
* The last to finish preflush schedules a worker to submit
- * the rest of the request (without the REQ_FLUSH flag).
+ * the rest of the request (without the REQ_PREFLUSH flag).
*/
struct bio *flush_bio;
atomic_t flush_pending;
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index 0a72ab6..f763efc 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -111,7 +111,7 @@ static void multipath_make_request(struct mddev *mddev,
struct bio * bio)
struct multipath_bh * mp_bh;
struct multipath_info *multipath;
- if (unlikely(bio->bi_rw & REQ_FLUSH)) {
+ if (unlikely(bio->bi_rw & REQ_PREFLUSH)) {
md_flush_request(mddev, bio);
return;
}
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index e0d1b8c..f95463d 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -458,7 +458,7 @@ static void raid0_make_request(struct mddev *mddev, struct
bio *bio)
struct md_rdev *tmp_dev;
struct bio *split;
- if (unlikely(bio->bi_rw & REQ_FLUSH)) {
+ if (unlikely(bio->bi_rw & REQ_PREFLUSH)) {
md_flush_request(mddev, bio);
return;
}
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 150df76..2646e9d 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1056,7 +1056,8 @@ static void raid1_make_request(struct mddev *mddev, struct
bio * bio)
const int op = bio->bi_op;
const int rw = bio_data_dir(bio);
const unsigned long do_sync = (bio->bi_rw & REQ_SYNC);
- const unsigned long do_flush_fua = (bio->bi_rw & (REQ_FLUSH |
REQ_FUA));
+ const unsigned long do_flush_fua = (bio->bi_rw &
+ (REQ_PREFLUSH | REQ_FUA));
const unsigned long do_sec = (bio->bi_rw & REQ_SECURE);
struct md_rdev *blocked_rdev;
struct blk_plug_cb *cb;
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 871edf6..e7091f4 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1452,7 +1452,7 @@ static void raid10_make_request(struct mddev *mddev,
struct bio *bio)
struct bio *split;
- if (unlikely(bio->bi_rw & REQ_FLUSH)) {
+ if (unlikely(bio->bi_rw & REQ_PREFLUSH)) {
md_flush_request(mddev, bio);
return;
}
diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index 3d88b55..72f787a 100644
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -536,7 +536,7 @@ int r5l_handle_flush_request(struct r5l_log *log, struct bio
*bio)
bio_endio(bio);
return 0;
}
- bio->bi_rw &= ~REQ_FLUSH;
+ bio->bi_rw &= ~REQ_PREFLUSH;
return -EAGAIN;
}
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index e9bc323..52c0a3a 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -5154,7 +5154,7 @@ static void raid5_make_request(struct mddev *mddev, struct
bio * bi)
DEFINE_WAIT(w);
bool do_prepare;
- if (unlikely(bi->bi_rw & REQ_FLUSH)) {
+ if (unlikely(bi->bi_rw & REQ_PREFLUSH)) {
int ret = r5l_handle_flush_request(conf->log, bi);
if (ret == 0)
diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c
index 9dc4394..c84379c 100644
--- a/fs/btrfs/check-integrity.c
+++ b/fs/btrfs/check-integrity.c
@@ -2205,7 +2205,7 @@ static void btrfsic_bio_end_io(struct bio *bp)
block->dev_bytenr, block->mirror_num);
next_block = block->next_in_same_bio;
block->iodone_w_error = iodone_w_error;
- if (block->submit_bio_bh_rw & REQ_FLUSH) {
+ if (block->submit_bio_bh_rw & REQ_PREFLUSH) {
dev_state->last_flush_gen++;
if ((dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_END_IO_BIO_BH))
@@ -2241,7 +2241,7 @@ static void btrfsic_bh_end_io(struct buffer_head *bh, int
uptodate)
block->dev_bytenr, block->mirror_num);
block->iodone_w_error = iodone_w_error;
- if (block->submit_bio_bh_rw & REQ_FLUSH) {
+ if (block->submit_bio_bh_rw & REQ_PREFLUSH) {
dev_state->last_flush_gen++;
if ((dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_END_IO_BIO_BH))
@@ -2882,7 +2882,7 @@ int btrfsic_submit_bh(int op, int op_flags, struct
buffer_head *bh)
btrfsic_process_written_block(dev_state, dev_bytenr,
&bh->b_data, 1, NULL,
NULL, bh, op_flags);
- } else if (NULL != dev_state && (op_flags & REQ_FLUSH)) {
+ } else if (NULL != dev_state && (op_flags & REQ_PREFLUSH)) {
if (dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
printk(KERN_INFO
@@ -2980,7 +2980,7 @@ static void __btrfsic_submit_bio(struct bio *bio)
kunmap(bio->bi_io_vec[i].bv_page);
}
kfree(mapped_datav);
- } else if (NULL != dev_state && (bio->bi_rw & REQ_FLUSH)) {
+ } else if (NULL != dev_state && (bio->bi_rw & REQ_PREFLUSH)) {
if (dev_state->state->print_mask &
BTRFSIC_PRINT_MASK_SUBMIT_BIO_BH)
printk(KERN_INFO
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 8855f6b..815c9a8 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1353,7 +1353,7 @@ static int jbd2_write_superblock(journal_t *journal, int
write_flags)
trace_jbd2_write_superblock(journal, write_flags);
if (!(journal->j_flags & JBD2_BARRIER))
- write_flags &= ~(REQ_FUA | REQ_FLUSH);
+ write_flags &= ~(REQ_FUA | REQ_PREFLUSH);
lock_buffer(bh);
if (buffer_write_io_error(bh)) {
/*
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index 917774e..0caffba 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -1242,7 +1242,7 @@ _xfs_buf_ioapply(
if (bp->b_flags & XBF_FUA)
op_flags |= REQ_FUA;
if (bp->b_flags & XBF_FLUSH)
- op_flags |= REQ_FLUSH;
+ op_flags |= REQ_PREFLUSH;
/*
* Run the write verifier callback function if it exists. If
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index f9e53ca..2b6583a 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -158,7 +158,7 @@ enum rq_flag_bits {
__REQ_NOIDLE, /* don't anticipate more IO after this one */
__REQ_INTEGRITY, /* I/O includes block integrity payload */
__REQ_FUA, /* forced unit access */
- __REQ_FLUSH, /* request for cache flush */
+ __REQ_PREFLUSH, /* request for cache flush */
/* bio only flags */
__REQ_RAHEAD, /* read ahead, can fail anytime */
@@ -202,12 +202,12 @@ enum rq_flag_bits {
(REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER)
#define REQ_COMMON_MASK \
(REQ_FAILFAST_MASK | REQ_SYNC | REQ_META | REQ_PRIO | REQ_NOIDLE | \
- REQ_FLUSH | REQ_FUA | REQ_SECURE | REQ_INTEGRITY)
+ REQ_PREFLUSH | REQ_FUA | REQ_SECURE | REQ_INTEGRITY)
#define REQ_CLONE_MASK REQ_COMMON_MASK
/* This mask is used for both bio and request merge checking */
#define REQ_NOMERGE_FLAGS \
- (REQ_NOMERGE | REQ_STARTED | REQ_SOFTBARRIER | REQ_FLUSH | REQ_FUA |
REQ_FLUSH_SEQ)
+ (REQ_NOMERGE | REQ_STARTED | REQ_SOFTBARRIER | REQ_PREFLUSH | REQ_FUA |
REQ_FLUSH_SEQ)
#define REQ_RAHEAD (1ULL << __REQ_RAHEAD)
#define REQ_THROTTLED (1ULL << __REQ_THROTTLED)
@@ -225,7 +225,7 @@ enum rq_flag_bits {
#define REQ_PREEMPT (1ULL << __REQ_PREEMPT)
#define REQ_ALLOCED (1ULL << __REQ_ALLOCED)
#define REQ_COPY_USER (1ULL << __REQ_COPY_USER)
-#define REQ_FLUSH (1ULL << __REQ_FLUSH)
+#define REQ_PREFLUSH (1ULL << __REQ_PREFLUSH)
#define REQ_FLUSH_SEQ (1ULL << __REQ_FLUSH_SEQ)
#define REQ_IO_STAT (1ULL << __REQ_IO_STAT)
#define REQ_MIXED_MERGE (1ULL << __REQ_MIXED_MERGE)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 7b57bb3..8f8881c 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -205,9 +205,9 @@ typedef void (dax_iodone_t)(struct buffer_head *bh_map, int
uptodate);
#define READ_SYNC REQ_SYNC
#define WRITE_SYNC (REQ_SYNC | REQ_NOIDLE)
#define WRITE_ODIRECT REQ_SYNC
-#define WRITE_FLUSH (REQ_SYNC | REQ_NOIDLE | REQ_FLUSH)
+#define WRITE_FLUSH (REQ_SYNC | REQ_NOIDLE | REQ_PREFLUSH)
#define WRITE_FUA (REQ_SYNC | REQ_NOIDLE | REQ_FUA)
-#define WRITE_FLUSH_FUA (REQ_SYNC | REQ_NOIDLE | REQ_FLUSH | REQ_FUA)
+#define WRITE_FLUSH_FUA (REQ_SYNC | REQ_NOIDLE | REQ_PREFLUSH | REQ_FUA)
/*
* Attribute flags. These should be or-ed together to figure out what
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 20f708e..1e5ab0c 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -33,7 +33,7 @@ TRACE_DEFINE_ENUM(SSR);
TRACE_DEFINE_ENUM(__REQ_RAHEAD);
TRACE_DEFINE_ENUM(__REQ_SYNC);
TRACE_DEFINE_ENUM(__REQ_NOIDLE);
-TRACE_DEFINE_ENUM(__REQ_FLUSH);
+TRACE_DEFINE_ENUM(__REQ_PREFLUSH);
TRACE_DEFINE_ENUM(__REQ_FUA);
TRACE_DEFINE_ENUM(__REQ_PRIO);
TRACE_DEFINE_ENUM(__REQ_META);
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 3a54c83..c94dec7 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -189,6 +189,7 @@ static const u32 ddir_act[2] = { BLK_TC_ACT(BLK_TC_READ),
BLK_TC_ACT(BLK_TC_WRITE) };
#define BLK_TC_RAHEAD BLK_TC_AHEAD
+#define BLK_TC_PREFLUSH BLK_TC_FLUSH
/* The ilog2() calls fall out because they're constant */
#define MASK_TC_BIT(rw, __name) ((rw & REQ_ ## __name) << \
@@ -219,7 +220,7 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t
sector, int bytes,
what |= MASK_TC_BIT(op_flags, SYNC);
what |= MASK_TC_BIT(op_flags, RAHEAD);
what |= MASK_TC_BIT(op_flags, META);
- what |= MASK_TC_BIT(op_flags, FLUSH);
+ what |= MASK_TC_BIT(op_flags, PREFLUSH);
what |= MASK_TC_BIT(op_flags, FUA);
if (op == REQ_OP_DISCARD)
what |= BLK_TC_ACT(BLK_TC_DISCARD);
@@ -1777,7 +1778,7 @@ void blk_fill_rwbs(char *rwbs, int op, u32 rw, int bytes)
{
int i = 0;
- if (rw & REQ_FLUSH ||
+ if (rw & REQ_PREFLUSH ||
op == REQ_OP_FLUSH)
rwbs[i++] = 'F';
--
1.8.3.1
Christoph Hellwig
2016-Feb-29 17:13 UTC
[Ocfs2-devel] [PATCH 00/35 v4] separate operations from flags in the bio/request structs
Any reason you've dropped my ACK for the previous version? Jens, is this something you're fine with? Would be great to figure out a way to get this into 4.6. There's probably going to be plenty of conflicts, so having some sort of stable base tree would be nice.. (Talking about conflicts, seems like the block for-linus and for-next trees already conflict quite a bit..)