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Btrfs: dirindex optimizations

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-04-05 13:35:25 -04:00
committed by David Woodhouse
parent 7fcde0e329
commit 5be6f7f174
5 changed files with 50 additions and 17 deletions
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5
fs/btrfs/dir-item.c
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@@ -92,6 +92,7 @@ int btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root
int cow = mod != 0;
struct btrfs_disk_key *found_key;
struct btrfs_leaf *leaf;
u32 overflow;
key.objectid = dir;
key.flags = 0;
@@ -119,8 +120,10 @@ int btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root
if (btrfs_match_dir_item_name(root, path, name, name_len))
return 0;
if (btrfs_disk_key_overflow(found_key) == 0)
overflow = btrfs_disk_key_overflow(found_key);
if (overflow == 0)
return 1;
btrfs_set_key_overflow(&key, overflow - 1);
btrfs_release_path(root, path);
}
return 1;