diff --git a/fs/btrfs/free-space-cache.h b/fs/btrfs/free-space-cache.h
index 189f740..e49ca5c 100644
--- a/fs/btrfs/free-space-cache.h
+++ b/fs/btrfs/free-space-cache.h
@@ -39,6 +39,8 @@
 				    struct btrfs_trans_handle *trans,
 				    struct btrfs_path *path,
 				    struct inode *inode);
+int load_free_space_cache(struct btrfs_fs_info *fs_info,
+			  struct btrfs_block_group_cache *block_group);
 int btrfs_write_out_cache(struct btrfs_root *root,
 			  struct btrfs_trans_handle *trans,
 			  struct btrfs_block_group_cache *block_group,