On Thu, Jun 15, 2023 at 10:32:33PM +0800, Ming Lei wrote: > NVMe calls freeze/unfreeze in different contexts, and controller removal > may break in-progress error recovery, then leave queues in frozen state. > So cause IO hang in del_gendisk() because pending writeback IOs are > still waited in bio_queue_enter(). Shouldn't those writebacks be unblocked by the existing check in bio_queue_enter, test_bit(GD_DEAD, &disk->state))? Or are we missing a disk state update or wakeup on this condition?
