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| author | Li Zefan <lizf@cn.fujitsu.com> | 2011-07-14 05:17:52 +0200 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2011-08-01 20:30:48 +0200 |
| commit | 85d85a743da894029723e002eb556ceeebc03658 (patch) | |
| tree | fb9cc28ea108c85785ac38f92a16a60467452dd1 | |
| parent | Btrfs: make acl functions really no-op if acl is not enabled (diff) | |
| download | linux-85d85a743da894029723e002eb556ceeebc03658.tar.xz linux-85d85a743da894029723e002eb556ceeebc03658.zip | |
Btrfs: remove redundant code for dir item lookup
When we search a dir item with a specific hash code, we can
just return NULL without further checking if btrfs_search_slot()
returns 1.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
| -rw-r--r-- | fs/btrfs/dir-item.c | 30 |
1 files changed, 2 insertions, 28 deletions
diff --git a/fs/btrfs/dir-item.c b/fs/btrfs/dir-item.c index c360a848d97f..31d84e78129b 100644 --- a/fs/btrfs/dir-item.c +++ b/fs/btrfs/dir-item.c @@ -198,8 +198,6 @@ struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, struct btrfs_key key; int ins_len = mod < 0 ? -1 : 0; int cow = mod != 0; - struct btrfs_key found_key; - struct extent_buffer *leaf; key.objectid = dir; btrfs_set_key_type(&key, BTRFS_DIR_ITEM_KEY); @@ -209,18 +207,7 @@ struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, ret = btrfs_search_slot(trans, root, &key, path, ins_len, cow); if (ret < 0) return ERR_PTR(ret); - if (ret > 0) { - if (path->slots[0] == 0) - return NULL; - path->slots[0]--; - } - - leaf = path->nodes[0]; - btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]); - - if (found_key.objectid != dir || - btrfs_key_type(&found_key) != BTRFS_DIR_ITEM_KEY || - found_key.offset != key.offset) + if (ret > 0) return NULL; return btrfs_match_dir_item_name(root, path, name, name_len); @@ -315,8 +302,6 @@ struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, struct btrfs_key key; int ins_len = mod < 0 ? -1 : 0; int cow = mod != 0; - struct btrfs_key found_key; - struct extent_buffer *leaf; key.objectid = dir; btrfs_set_key_type(&key, BTRFS_XATTR_ITEM_KEY); @@ -324,18 +309,7 @@ struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, ret = btrfs_search_slot(trans, root, &key, path, ins_len, cow); if (ret < 0) return ERR_PTR(ret); - if (ret > 0) { - if (path->slots[0] == 0) - return NULL; - path->slots[0]--; - } - - leaf = path->nodes[0]; - btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]); - - if (found_key.objectid != dir || - btrfs_key_type(&found_key) != BTRFS_XATTR_ITEM_KEY || - found_key.offset != key.offset) + if (ret > 0) return NULL; return btrfs_match_dir_item_name(root, path, name, name_len); |