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| author | Arne Jansen <sensille@gmx.net> | 2011-05-23 14:25:41 +0200 |
|---|---|---|
| committer | Arne Jansen <sensille@gmx.net> | 2011-10-02 08:47:57 +0200 |
| commit | ab0fff03055d2d1b01a7581badeba18db9c4f55c (patch) | |
| tree | 3bc6fbbdc7188623783db379eff8fbf23cdcb514 /fs/btrfs/extent_io.h | |
| parent | bb82ab88dfdb12948af58989c75bfe904bc1b09d (diff) | |
| download | lwn-ab0fff03055d2d1b01a7581badeba18db9c4f55c.tar.gz lwn-ab0fff03055d2d1b01a7581badeba18db9c4f55c.zip | |
btrfs: add READAHEAD extent buffer flag
Add a READAHEAD extent buffer flag.
Add a function to trigger a read with this flag set.
Changes v2:
- use extent buffer flags instead of extent state flags
Changes v5:
- adapt to changed read_extent_buffer_pages interface
- don't return eb from reada_tree_block_flagged if it has CORRUPT flag set
Signed-off-by: Arne Jansen <sensille@gmx.net>
Diffstat (limited to 'fs/btrfs/extent_io.h')
| -rw-r--r-- | fs/btrfs/extent_io.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index 6d74c6b34691..fcaf49bcb880 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -32,6 +32,7 @@ #define EXTENT_BUFFER_BLOCKING 1 #define EXTENT_BUFFER_DIRTY 2 #define EXTENT_BUFFER_CORRUPT 3 +#define EXTENT_BUFFER_READAHEAD 4 /* this got triggered by readahead */ /* these are flags for extent_clear_unlock_delalloc */ #define EXTENT_CLEAR_UNLOCK_PAGE 0x1 |