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| author | Eric Whitney <enwlinux@gmail.com> | 2018-10-01 14:10:39 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2018-10-01 14:10:39 -0400 |
| commit | ad431025aecda85d3ebef5e4a3aca5c1c681d0c7 (patch) | |
| tree | a1de381c9d990257c627f792255154ff9c21d561 /fs/ext4/extents_status.h | |
| parent | 17b57b1883c1285f3d0dc2266e8f79286a7bef38 (diff) | |
| download | linux-ad431025aecda85d3ebef5e4a3aca5c1c681d0c7.tar.gz linux-ad431025aecda85d3ebef5e4a3aca5c1c681d0c7.tar.bz2 linux-ad431025aecda85d3ebef5e4a3aca5c1c681d0c7.zip | |
ext4: generalize extents status tree search functions
Ext4 contains a few functions that are used to search for delayed
extents or blocks in the extents status tree. Rather than duplicate
code to add new functions to search for extents with different status
values, such as written or a combination of delayed and unwritten,
generalize the existing code to search for caller-specified extents
status values. Also, move this code into extents_status.c where it
is better associated with the data structures it operates upon, and
where it can be more readily used to implement new extents status tree
functions that might want a broader scope for i_es_lock.
Three missing static specifiers in RFC version of patch reported and
fixed by Fengguang Wu <fengguang.wu@intel.com>.
Signed-off-by: Eric Whitney <enwlinux@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/extents_status.h')
| -rw-r--r-- | fs/ext4/extents_status.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/fs/ext4/extents_status.h b/fs/ext4/extents_status.h index 8efdeb903d6b..df9628c3ec3b 100644 --- a/fs/ext4/extents_status.h +++ b/fs/ext4/extents_status.h @@ -90,11 +90,18 @@ extern void ext4_es_cache_extent(struct inode *inode, ext4_lblk_t lblk, unsigned int status); extern int ext4_es_remove_extent(struct inode *inode, ext4_lblk_t lblk, ext4_lblk_t len); -extern void ext4_es_find_delayed_extent_range(struct inode *inode, - ext4_lblk_t lblk, ext4_lblk_t end, - struct extent_status *es); +extern void ext4_es_find_extent_range(struct inode *inode, + int (*match_fn)(struct extent_status *es), + ext4_lblk_t lblk, ext4_lblk_t end, + struct extent_status *es); extern int ext4_es_lookup_extent(struct inode *inode, ext4_lblk_t lblk, struct extent_status *es); +extern bool ext4_es_scan_range(struct inode *inode, + int (*matching_fn)(struct extent_status *es), + ext4_lblk_t lblk, ext4_lblk_t end); +extern bool ext4_es_scan_clu(struct inode *inode, + int (*matching_fn)(struct extent_status *es), + ext4_lblk_t lblk); static inline unsigned int ext4_es_status(struct extent_status *es) { |