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| author | Qu Wenruo <quwenruo@cn.fujitsu.com> | 2015-10-12 15:35:38 +0800 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2015-10-21 18:37:44 -0700 |
| commit | fefdc55702a5f9f99778b6bdce4c4e1185ff943f (patch) | |
| tree | 5200c727ca441747ae8c1d168962749bd25dbe48 /fs/btrfs/extent_io.h | |
| parent | d38ed27f0442c8cd520e093081127949d4bcf9bc (diff) | |
| download | blackbird-obmc-linux-fefdc55702a5f9f99778b6bdce4c4e1185ff943f.tar.gz blackbird-obmc-linux-fefdc55702a5f9f99778b6bdce4c4e1185ff943f.zip | |
btrfs: extent_io: Introduce new function clear_record_extent_bits()
Introduce new function clear_record_extent_bits(), which will clear bits
for given range and record the details about which ranges are cleared
and how many bytes in total it changes.
This provides the basis for later qgroup reserve codes.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/extent_io.h')
| -rw-r--r-- | fs/btrfs/extent_io.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index 4a7c9d9fbb4f..51e1b7143256 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -222,6 +222,9 @@ int test_range_bit(struct extent_io_tree *tree, u64 start, u64 end, struct extent_state *cached_state); int clear_extent_bits(struct extent_io_tree *tree, u64 start, u64 end, unsigned bits, gfp_t mask); +int clear_record_extent_bits(struct extent_io_tree *tree, u64 start, u64 end, + unsigned bits, gfp_t mask, + struct extent_changeset *changeset); int clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, unsigned bits, int wake, int delete, struct extent_state **cached, gfp_t mask); |
