diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c
index f6a596d5a6374f1dbf66279e24ef17aed9ff399d..218df701e6071c83807b89979517f035d6e2a155 100644
--- a/fs/btrfs/inode-map.c
+++ b/fs/btrfs/inode-map.c
@@ -271,7 +271,7 @@ void btrfs_unpin_free_ino(struct btrfs_root *root)
 		__btrfs_add_free_space(ctl, info->offset, count);
 free:
 		rb_erase(&info->offset_index, rbroot);
-		kfree(info);
+		kmem_cache_free(btrfs_free_space_cachep, info);
 	}
 }