aboutsummaryrefslogtreecommitdiffstats
path: root/fs/btrfs/extent_io.h
diff options
context:
space:
mode:
authorArne Jansen <sensille@gmx.net>2011-05-23 14:25:41 +0200
committerArne Jansen <sensille@gmx.net>2011-10-02 08:47:57 +0200
commitab0fff03055d2d1b01a7581badeba18db9c4f55c (patch)
tree3bc6fbbdc7188623783db379eff8fbf23cdcb514 /fs/btrfs/extent_io.h
parentbb82ab88dfdb12948af58989c75bfe904bc1b09d (diff)
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.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 6d74c6b3469..fcaf49bcb88 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