On Mon, Feb 05, 2018 at 10:26:03AM +0800, jianchao.wang wrote: > > Freezing is not just for shutdown. It's also used so > > blk_mq_update_nr_hw_queues will work if the queue count changes across > > resets. > blk_mq_update_nr_hw_queues will freeze the queue itself. Please refer to. > static void __blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set,
Yes, but how many requests are you letting enter to their demise by freezing on the wrong side of the reset? We don't use the nuclear option out of convenience.
