diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index ebc85bf53ee7..8288d79372a5 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -634,6 +634,7 @@ static inline void btrfs_free_chunk_map(struct btrfs_chunk_map *map)
 		kfree(map);
 	}
 }
+DEFINE_FREE(btrfs_free_chunk_map, struct btrfs_chunk_map *, btrfs_free_chunk_map(_T))
 
 struct btrfs_balance_control {
 	struct btrfs_balance_args data;