old_devices      2460 fs/btrfs/volumes.c 	struct btrfs_fs_devices *old_devices;
old_devices      2474 fs/btrfs/volumes.c 	old_devices = clone_fs_devices(fs_devices);
old_devices      2475 fs/btrfs/volumes.c 	if (IS_ERR(old_devices)) {
old_devices      2477 fs/btrfs/volumes.c 		return PTR_ERR(old_devices);
old_devices      2480 fs/btrfs/volumes.c 	list_add(&old_devices->fs_list, &fs_uuids);