Displaying 8 results from an estimated 8 matches for "extent_map_hol".
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extent_map_hole
2013 Oct 14
0
[PATCH] Btrfs: fix hole check in log_one_extent
I added an assert to make sure we were looking up aligned offsets for csums and
I tripped it when running xfstests. This is because log_one_extent was checking
if block_start == 0 for a hole instead of EXTENT_MAP_HOLE. This worked out fine
in practice it seems, but it adds a lot of extra work that is uneeded. With
this fix I''m no longer tripping my assert. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
---
fs/btrfs/tree-log.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
d...
2009 Nov 02
0
[PATCH 7/8] Make fallocate(2) more ENOSPC friendly
...on the range with the transaction
* running or with the extent lock held
@@ -5713,9 +5765,12 @@ static long btrfs_fallocate(struct inode
BUG_ON(IS_ERR(em) || !em);
last_byte = min(extent_map_end(em), alloc_end);
last_byte = (last_byte + mask) & ~mask;
- if (em->block_start == EXTENT_MAP_HOLE) {
- ret = prealloc_file_range(trans, inode, cur_offset,
- last_byte, alloc_hint, mode);
+ if (em->block_start == EXTENT_MAP_HOLE ||
+ (cur_offset >= inode->i_size &&
+ !test_bit(EXTENT_FLAG_PREALLOC, &em->flags))) {
+ ret = prealloc_file_range(inode,
+...
2013 Oct 16
0
[PATCH] Btrfs: add tests for btrfs_get_extent V2
...t;node, 0);
+ ret = -EINVAL;
+
+ /* First with no extents */
+ BTRFS_I(inode)->root = root;
+ em = btrfs_get_extent(inode, NULL, 0, 0, 4096, 0);
+ if (IS_ERR(em)) {
+ em = NULL;
+ test_msg("Got an error when we shouldn''t have\n");
+ goto out;
+ }
+ if (em->block_start != EXTENT_MAP_HOLE) {
+ test_msg("Expected a hole, got %Lu\n", em->block_start);
+ goto out;
+ }
+ if (!test_bit(EXTENT_FLAG_VACANCY, &em->flags)) {
+ test_msg("Vacancy flag wasn''t set properly\n");
+ goto out;
+ }
+ free_extent_map(em);
+ btrfs_drop_extent_cache(inode, 0,...
2010 Mar 22
0
[PATCH] Btrfs: change direct I/O read to not use i_mutex.
...tree not updated */
if (test_bit(EXTENT_FLAG_VACANCY, &em->flags)) {
printk(KERN_ERR
@@ -520,25 +582,12 @@ getlock:
} else {
len = min(len, em->len - (diocb->start - em->start));
if (test_bit(EXTENT_FLAG_PREALLOC, &em->flags) ||
- em->block_start == EXTENT_MAP_HOLE) {
+ em->block_start == EXTENT_MAP_HOLE)
err = btrfs_dio_hole_read(diocb, len);
- } else if (test_bit(EXTENT_FLAG_COMPRESSED,
- &em->flags)) {
- if (diocb->lockstart > em->start ||
- lockend < em->start + em->len - 1) {
- /* lock everyt...
2012 Oct 01
1
[RFC] [PATCH] Btrfs: rework can_nocow_odirect
...mp;
- found_type != BTRFS_FILE_EXTENT_PREALLOC) {
- /* not a regular extent, must cow */
- goto out;
- }
- disk_bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);
- backref_offset = btrfs_file_extent_offset(leaf, fi);
+ if (em->block_start == EXTENT_MAP_INLINE ||
+ em->block_start == EXTENT_MAP_HOLE)
+ return 0;
- extent_end = key.offset + btrfs_file_extent_num_bytes(leaf, fi);
- if (extent_end < offset + len) {
- /* extent doesn''t include our full range, must cow */
- goto out;
- }
+ /*
+ * The em''s disk_bytenr is already adjusted for its offset so we need to
+ *...
2010 Apr 26
0
[PATCH V2 11/12] Btrfs: Pre-allocate space for data relocation
..., i_size, NULL);
+ i_size_write(inode, cur_offset);
+ i_size_write(inode, cur_offset);
+ btrfs_ordered_update_i_size(inode, cur_offset, NULL);
}
ret = btrfs_update_inode(trans, root, inode);
@@ -6215,16 +6219,16 @@ static long btrfs_fallocate(struct inode
if (em->block_start == EXTENT_MAP_HOLE ||
(cur_offset >= inode->i_size &&
!test_bit(EXTENT_FLAG_PREALLOC, &em->flags))) {
- ret = prealloc_file_range(inode,
- cur_offset, last_byte,
- alloc_hint, mode, offset+len);
+ ret = btrfs_prealloc_file_range(inode, 0, cur_offset,
+ last_b...
2009 Nov 12
0
[PATCH 03/12] Btrfs: Rewrite btrfs_drop_extents
...0, 0, 0,
+ ins.offset, 0, 0, 0,
BTRFS_FILE_EXTENT_PREALLOC);
BUG_ON(ret);
btrfs_drop_extent_cache(inode, cur_offset,
@@ -5779,8 +5771,7 @@ static long btrfs_fallocate(struct inode *inode, int mode,
last_byte = (last_byte + mask) & ~mask;
if (em->block_start == EXTENT_MAP_HOLE) {
ret = prealloc_file_range(trans, inode, cur_offset,
- last_byte, locked_end + 1,
- alloc_hint, mode);
+ last_byte, alloc_hint, mode);
if (ret < 0) {
free_extent_map(em);
break;
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index cdbb054..a1a8db8 100644
--- a...
2010 May 07
6
[PATCH 1/5] fs: allow short direct-io reads to be completed via buffered IO V2
V1->V2: Check to see if our current ppos is >= i_size after a short DIO read,
just in case it was actually a short read and we need to just return.
This is similar to what already happens in the write case. If we have a short
read while doing O_DIRECT, instead of just returning, fallthrough and try to
read the rest via buffered IO. BTRFS needs this because if we encounter a
compressed or