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authorChris Mason <chris.mason@oracle.com>2007-05-01 16:53:32 +0400
committerDavid Woodhouse <dwmw2@hera.kernel.org>2007-05-01 16:53:32 +0400
commit090d18753c7fb73f7d846c3a89a50cd35136d144 (patch)
treee36965065fd68633c06cbe4b8312e5afe49997f4 /fs/btrfs/disk-io.h
parent31f3c99b73483f7b738a886c552050cbd6128ff3 (diff)
downloadlinux-090d18753c7fb73f7d846c3a89a50cd35136d144.tar.xz
Btrfs: directory readahead
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/disk-io.h')
-rw-r--r--fs/btrfs/disk-io.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index 444ebb0141ae..1ee7d2a55b5b 100644
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -5,6 +5,11 @@
#define BTRFS_SUPER_INFO_OFFSET (16 * 1024)
+enum btrfs_bh_state_bits {
+ BH_Checked = BH_PrivateStart,
+};
+BUFFER_FNS(Checked, checked);
+
static inline struct btrfs_node *btrfs_buffer_node(struct buffer_head *bh)
{
return (struct btrfs_node *)bh->b_data;
@@ -21,6 +26,7 @@ static inline struct btrfs_header *btrfs_buffer_header(struct buffer_head *bh)
}
struct buffer_head *read_tree_block(struct btrfs_root *root, u64 blocknr);
+int readahead_tree_block(struct btrfs_root *root, u64 blocknr);
struct buffer_head *btrfs_find_create_tree_block(struct btrfs_root *root,
u64 blocknr);
int write_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,