diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index f4b4677..6c2c2c4 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -1325,7 +1325,7 @@
 /* extent-tree.c */
 u32 btrfs_count_snapshots_in_path(struct btrfs_root *root,
 				  struct btrfs_path *count_path,
-				  u64 first_extent);
+				  u64 expected_owner, u64 first_extent);
 int btrfs_extent_post_op(struct btrfs_trans_handle *trans,
 			 struct btrfs_root *root);
 int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy);