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| author | Yan, Zheng <zheng.yan@oracle.com> | 2010-05-16 10:48:47 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2010-05-25 10:34:51 -0400 |
| commit | 0ca1f7ceb1991099ed5273885ebcf4323948c72e (patch) | |
| tree | 10758d6a55c529aced177da3f6bf45cf26361913 /fs/btrfs/extent_io.h | |
| parent | a22285a6a32390195235171b89d157ed1a1fe932 (diff) | |
| download | blackbird-op-linux-0ca1f7ceb1991099ed5273885ebcf4323948c72e.tar.gz blackbird-op-linux-0ca1f7ceb1991099ed5273885ebcf4323948c72e.zip | |
Btrfs: Update metadata reservation for delayed allocation
Introduce metadata reservation context for delayed allocation
and update various related functions.
This patch also introduces EXTENT_FIRST_DELALLOC control bit for
set/clear_extent_bit. It tells set/clear_bit_hook whether they
are processing the first extent_state with EXTENT_DELALLOC bit
set. This change is important if set/clear_extent_bit involves
multiple extent_state.
Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/extent_io.h')
| -rw-r--r-- | fs/btrfs/extent_io.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index bbab4813646f..86f10dc791d9 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -16,7 +16,9 @@ #define EXTENT_BOUNDARY (1 << 9) #define EXTENT_NODATASUM (1 << 10) #define EXTENT_DO_ACCOUNTING (1 << 11) +#define EXTENT_FIRST_DELALLOC (1 << 12) #define EXTENT_IOBITS (EXTENT_LOCKED | EXTENT_WRITEBACK) +#define EXTENT_CTLBITS (EXTENT_DO_ACCOUNTING | EXTENT_FIRST_DELALLOC) /* flags for bio submission */ #define EXTENT_BIO_COMPRESSED 1 @@ -69,10 +71,10 @@ struct extent_io_ops { struct extent_state *state); int (*writepage_end_io_hook)(struct page *page, u64 start, u64 end, struct extent_state *state, int uptodate); - int (*set_bit_hook)(struct inode *inode, u64 start, u64 end, - unsigned long old, unsigned long bits); + int (*set_bit_hook)(struct inode *inode, struct extent_state *state, + int *bits); int (*clear_bit_hook)(struct inode *inode, struct extent_state *state, - unsigned long bits); + int *bits); int (*merge_extent_hook)(struct inode *inode, struct extent_state *new, struct extent_state *other); |
