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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/disk-io.h
parentbb82ab88dfdb12948af58989c75bfe904bc1b09d (diff)
downloadop-kernel-dev-ab0fff03055d2d1b01a7581badeba18db9c4f55c.zip
op-kernel-dev-ab0fff03055d2d1b01a7581badeba18db9c4f55c.tar.gz
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/disk-io.h')
-rw-r--r--fs/btrfs/disk-io.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index bec3ea4..b3bdb5c 100644
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -40,6 +40,8 @@ struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
u32 blocksize, u64 parent_transid);
int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize,
u64 parent_transid);
+int reada_tree_block_flagged(struct btrfs_root *root, u64 bytenr, u32 blocksize,
+ int mirror_num, struct extent_buffer **eb);
struct extent_buffer *btrfs_find_create_tree_block(struct btrfs_root *root,
u64 bytenr, u32 blocksize);
int clean_tree_block(struct btrfs_trans_handle *trans,
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