On Fri, Oct 22, 2021 at 02:47:47PM +0800, Mark-PK Tsai wrote: > dm_early_create() fail if the target block device not found in > the late init stage. > The block device is created in mmc_rescan() which kernel do > it async by queue it into system_freezable_wq. > Add module param bdev_wait to support waiting the block device > ready before dm_early_create() like prepare_namespace() does. This adds a busy loop. There is a reason why we usually set up stacking drivers from userspace, in that we have a working event system there. So the answer is not to add further hacks to the in-kernel DM setup hack, but to stop using it. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/dm-devel
