search for: extent_io_tree

...- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -2,6 +2,7 @@ #define __EXTENTIO__ #include <linux/rbtree.h> +#include <linux/bio.h> /* bits for the extent state */ #define EXTENT_DIRTY 1 @@ -300,4 +301,6 @@ int extent_clear_unlock_delalloc(struct inode *inode, struct extent_io_tree *tree, u64 start, u64 end, struct page *locked_page, unsigned long op); +extern void access_extent_buffer_page(struct bio_vec *vec, struct extent_buffer *eb, + unsigned long start, unsigned long len); #endif -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe...

...d_refs(struct btrfs_transaction *trans, + struct btrfs_root *root); +static void btrfs_destroy_pending_snapshots(struct btrfs_transaction *t); static int btrfs_destroy_delalloc_inodes(struct btrfs_root *root); static int btrfs_destroy_marked_extents(struct btrfs_root *root, struct extent_io_tree *dirty_pages, @@ -1056,10 +1056,10 @@ int clean_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root, return 0; } -static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize, - u32 stripesize, struct btrfs_root *root, - struct btrfs_fs_info *fs_info, - u64 objecti...

...sure * we only fill in the checksum field in the first page of a multi-page block */ - -static int csum_dirty_buffer(struct btrfs_root *root, struct page *page) +static int csum_dirty_buffer(struct btrfs_root *root, struct page *page, + unsigned int offset, unsigned int len) { - struct extent_io_tree *tree; u64 start = (u64)page->index << PAGE_CACHE_SHIFT; u64 found_start; struct extent_buffer *eb; - tree = &BTRFS_I(page->mapping->host)->io_tree; + if (!PageUptodate(page)) { + WARN_ON(1); + return 0; + } eb = (struct extent_buffer *)page->private; - if (pa...

...age); + } while (index != start_idx); +} + +/* + * Helper for releasing the extent buffer. + */ +static inline void btrfs_release_extent_buffer(struct extent_buffer *eb) +{ + btrfs_release_extent_buffer_page(eb, 0); + __free_extent_buffer(eb); +} + struct extent_buffer *alloc_extent_buffer(struct extent_io_tree *tree, u64 start, unsigned long len, struct page *page0, @@ -3174,10 +3207,7 @@ struct extent_buffer *alloc_extent_buffer(struct extent_io_tree *tree, free_eb: if (!atomic_dec_and_test(&eb->refs)) return exists; - for (index = 1; index < i; index++) - page_cach...

Hi, The following series of patches implements in btrfs an ioctl to do out-of-band deduplication of file extents. To be clear, this means that the file system is mounted and running, but the dedupe is not done during file writes, but after the fact when some userspace software initiates a dedupe. The primary patch is loosely based off of one sent by Josef Bacik back in January, 2011.

...tent_io.c | 37 +++++++++++++++++++++++++++++++++++-- 1 files changed, 35 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 01c21b6..8f9c18d 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -3549,6 +3549,11 @@ int extent_writepages(struct extent_io_tree *tree, return ret; } +struct pagelst { + struct page *page; + struct list_head lst; +}; + int extent_readpages(struct extent_io_tree *tree, struct address_space *mapping, struct list_head *pages, unsigned nr_pages, @@ -3557,19 +3562,47 @@ int extent_readpages(struct extent_io_...

..._io.c | 41 +++++++++++++++++++++++++++++++++++++++-- 1 files changed, 39 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 01c21b6..5c8ab6c 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -3549,6 +3549,11 @@ int extent_writepages(struct extent_io_tree *tree, return ret; } +struct pagelst { + struct page *page; + struct list_head lst; +}; + int extent_readpages(struct extent_io_tree *tree, struct address_space *mapping, struct list_head *pages, unsigned nr_pages, @@ -3557,19 +3562,51 @@ int extent_readpages(struct extent_io_...

.../fs/btrfs/extent_io.c index 2bf6f46..c10291cc 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -1598,11 +1598,10 @@ done: * * 1 is returned if we find something, 0 if nothing was in the tree */ -static noinline u64 find_lock_delalloc_range(struct inode *inode, - struct extent_io_tree *tree, - struct page *locked_page, - u64 *start, u64 *end, - u64 max_bytes) +STATIC u64 find_lock_delalloc_range(struct inode *inode, + struct extent_io_tree *tree, + struct page *locked_page, u64 *start, + u64 *end, u64 max_bytes) { u64 delalloc_s...

...tions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 42b4cde..1376611 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -1171,7 +1171,8 @@ out: * 1 is returned if we find something, 0 if nothing was in the tree */ static noinline u64 find_delalloc_range(struct extent_io_tree *tree, - u64 *start, u64 *end, u64 max_bytes) + u64 *start, u64 *end, u64 max_bytes, + struct extent_state **cached_state) { struct rb_node *node; struct extent_state *state; @@ -1203,8 +1204,11 @@ static noinline u64 find_delalloc_range(struct extent_io_tree *tree, *end = sta...

...| 17 ++++++++++++++++- mm/slub.c | 2 ++ 7 files changed, 58 insertions(+), 4 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index bcc8dff..355c7fc 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -63,6 +63,26 @@ tree_fs_info(struct extent_io_tree *tree) return btrfs_sb(tree->mapping->host->i_sb); } +static void extent_state_leak_decoder(void *object) +{ + struct extent_state *state = object; + + printk(KERN_ERR "btrfs state leak: start %llu end %llu " + "state %lu in tree %p refs %d\n", + (uns...

Hi all - Here''s my current error handling patchset, against 3.1-rc8. Almost all of this patchset is preparing for actual error handling. Before we start in on that work, I''m trying to reduce the surface we need to worry about. It turns out that there is a ton of code that returns an error code but never actually reports an error. The patchset has grown to 65 patches. 46 of them

...yonlinux.org> --- fs/btrfs/extent_io.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 9d09a4f..fcf77e1 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -3909,6 +3909,8 @@ int extent_range_uptodate(struct extent_io_tree *tree, while (start <= end) { index = start >> PAGE_CACHE_SHIFT; page = find_get_page(tree->mapping, index); + if (!page) + return 1; uptodate = PageUptodate(page); page_cache_release(page); if (!uptodate) { -- 1.7.3.4 -- To unsubscribe from this list: send the lin...

.../* verify that we have locked everything we need to do the read and + * have pushed the ordered data into the btree so the extent is valid + */ +static void btrfs_dio_safe_to_read(struct btrfs_diocb *diocb, + struct extent_map *em, u64 *lockend, + u64 *data_len, int *safe_to_read) +{ + struct extent_io_tree *io_tree = &BTRFS_I(diocb->inode)->io_tree; + struct btrfs_ordered_extent *ordered; + u64 stop; + + /* must ensure the whole compressed extent is valid on each loop + * as we don''t know the final extent size until we look it up + */ + if (test_bit(EXTENT_FLAG_COMPRESSED, &e...

This series introduces a generic readahead interface for btrfs trees. The intention is to use it to speed up scrub in a first run, but balance is another hot candidate. In general, every tree walk could be accompanied by a readahead. Deletion of large files comes to mind, where the fetching of the csums takes most of the time. Also the initial build-ups of free-space-caches and

...+++++-------- fs/btrfs/ioctl.c | 8 ++++---- 5 files changed, 28 insertions(+), 14 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 4c87847..604e404 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -1144,6 +1144,14 @@ int set_extent_delalloc(struct extent_io_tree *tree, u64 start, u64 end, NULL, cached_state, mask); } +int set_extent_defrag(struct extent_io_tree *tree, u64 start, u64 end, + struct extent_state **cached_state, gfp_t mask) +{ + return set_extent_bit(tree, start, end, + EXTENT_DELALLOC | EXTENT_UPTODATE | EXTENT_DEF...

...(sb); if (sb->s_flags & MS_RDONLY) return 0; diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 919172d..b8822d5 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -892,6 +892,7 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, struct extent_io_tree *pinned_copy; DEFINE_WAIT(wait); int ret; + int ordered = btrfs_test_opt(root, FLUSHONCOMMIT); INIT_LIST_HEAD(&dirty_fs_roots); mutex_lock(&root->fs_info->trans_mutex); @@ -952,7 +953,9 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, mutex_unlock(&...

...2fs/ext2fs.h> -#include <ext2fs/ext2_ext_attr.h> -struct convert_fs { - u64 total_bytes; - u64 blocksize; - const char *label; - - /* Close the FS */ - int (*close)(struct convert_fs *fs); - /* Mark free extents as dirty */ - int (*cache_free_extents)(struct convert_fs *fs, - struct extent_io_tree *tree); - /* Copy everything over */ - int (*copy_inodes)(struct convert_fs *fs, struct btrfs_root *root, - int datacsum, int packing, int noxattr); - - void *privdata; -}; - -#define INO_OFFSET (BTRFS_FIRST_FREE_OBJECTID - EXT2_ROOT_INO) #define STRIPE_LEN (64 * 1024) #define ORIG_IMAGE_SUB...

...fs/btrfs/extent_io.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index b48942f..2bf6f46 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -1491,10 +1491,8 @@ static noinline u64 find_delalloc_range(struct extent_io_tree *tree, cur_start = state->end + 1; node = rb_next(node); total_bytes += state->end - state->start + 1; - if (total_bytes >= max_bytes) { - *end = *start + max_bytes - 1; + if (total_bytes >= max_bytes) break; - } if (!node) break; } @@ -1636,10 +1634,9 @@ a...

...ge() skip all + * those expensive operations on a per page basis and do only the ordered io + * finishing, while we release here the extent_map and extent_state structures, + * without the excessive merging and splitting. + */ +static void evict_inode_truncate_pages(struct inode *inode) +{ + struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree; + struct extent_map_tree *map_tree = &BTRFS_I(inode)->extent_tree; + struct rb_node *node; + + ASSERT(inode->i_state & I_FREEING); + truncate_inode_pages(&inode->i_data, 0); + + write_lock(&map_tree->lock); + while (!RB_EMPTY_R...

While testing raid-auto-repair patches I''m going to send out later, I just found the very last bug in my current scrub patch series: Changelog v4->v5: - fixed a deadlock when fixup is taking longer while scrub is about to end Original message follows: ------------------------ This patch set introduces two new features for scrub. They share the backref iteration code which is the