X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=fs%2Fbtrfs%2Froot-tree.c;h=dbe20d4c6ea4aba935d37b6a3fd283427661ffec;hb=ea9e8b11bd1252dcbc23afefcf1a52ec6aa3c113;hp=e9be3abcb368391dce1a78ccb8ede44431a03baa;hpb=0660b5af3f7ac0fac69de975914e1f4a3a586fb3;p=linux-2.6-block.git

diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c
index e9be3abcb368..dbe20d4c6ea4 100644
--- a/fs/btrfs/root-tree.c
+++ b/fs/btrfs/root-tree.c
@@ -300,6 +300,22 @@ int btrfs_del_root_ref(struct btrfs_trans_handle *trans,
 	return ret;
 }
 
+int btrfs_find_root_ref(struct btrfs_root *tree_root,
+		   struct btrfs_path *path,
+		   u64 root_id, u64 ref_id)
+{
+	struct btrfs_key key;
+	int ret;
+
+	key.objectid = root_id;
+	key.type = BTRFS_ROOT_REF_KEY;
+	key.offset = ref_id;
+
+	ret = btrfs_search_slot(NULL, tree_root, &key, path, 0, 0);
+	return ret;
+}
+
+
 /*
  * add a btrfs_root_ref item.  type is either BTRFS_ROOT_REF_KEY
  * or BTRFS_ROOT_BACKREF_KEY.