del_symlink      1349 fs/block_dev.c 	del_symlink(disk->slave_dir, &part_to_dev(bdev->bd_part)->kobj);
del_symlink      1377 fs/block_dev.c 		del_symlink(disk->slave_dir, &part_to_dev(bdev->bd_part)->kobj);
del_symlink      1378 fs/block_dev.c 		del_symlink(bdev->bd_part->holder_dir,