1 files changed, 47 insertions, 0 deletions

diff --git a/fs/btrfs/dir-item.c b/fs/btrfs/dir-item.c
index 1d70236ba00c..f3a6075519cc 100644
--- a/fs/btrfs/dir-item.c
+++ b/fs/btrfs/dir-item.c
@@ -281,6 +281,53 @@ btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans,
         return btrfs_match_dir_item_name(root, path, name, name_len);
 }
 
+struct btrfs_dir_item *
+btrfs_search_dir_index_item(struct btrfs_root *root,
+                            struct btrfs_path *path, u64 dirid,
+                            const char *name, int name_len)
+{
+        struct extent_buffer *leaf;
+        struct btrfs_dir_item *di;
+        struct btrfs_key key;
+        u32 nritems;
+        int ret;
+
+        key.objectid = dirid;
+        key.type = BTRFS_DIR_INDEX_KEY;
+        key.offset = 0;
+
+        ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
+        if (ret < 0)
+                return ERR_PTR(ret);
+
+        leaf = path->nodes[0];
+        nritems = btrfs_header_nritems(leaf);
+
+        while (1) {
+                if (path->slots[0] >= nritems) {
+                        ret = btrfs_next_leaf(root, path);
+                        if (ret < 0)
+                                return ERR_PTR(ret);
+                        if (ret > 0)
+                                break;
+                        leaf = path->nodes[0];
+                        nritems = btrfs_header_nritems(leaf);
+                        continue;
+                }
+
+                btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);
+                if (key.objectid != dirid || key.type != BTRFS_DIR_INDEX_KEY)
+                        break;
+
+                di = btrfs_match_dir_item_name(root, path, name, name_len);
+                if (di)
+                        return di;
+
+                path->slots[0]++;
+        }
+        return NULL;
+}
+
 struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans,
                                           struct btrfs_root *root,
                                           struct btrfs_path *path, u64 dir,