On 6/8/21 3:27 AM, Yufen Yu wrote: > If disk have been deleted, we should return fail for ioctl > BLKPG_DEL_PARTITION. Otherwise, the directory /sys/class/block > may remain invalid symlinks file. The race as following: > > blkdev_open > del_gendisk > disk->flags &= ~GENHD_FL_UP; > blk_drop_partitions > blkpg_ioctl > bdev_add_partition > add_partition > device_add > device_add_class_symlinks > > ioctl may add_partition after del_gendisk() have tried to delete > partitions. Then, symlinks file will be created. Let's do this for 5.14, which means send it against for-5.14/block please. Thanks. -- Jens Axboe
