On Tue, Jun 8, 2021 at 5:21 PM Yufen Yu <yuyufen@xxxxxxxxxx> 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. > > Signed-off-by: Yufen Yu <yuyufen@xxxxxxxxxx> Reviewed-by: Ming Lei <ming.lei@xxxxxxxxxx> -- Ming
