Hello Guys, On Wed, Jul 6, 2022 at 8:59 PM Ming Lei <ming.lei@xxxxxxxxxx> wrote: > > megaraid scsi driver sets set->nr_maps as 3 if poll_queues is > 0, and > blk-mq actually initializes each map's nr_queues as nr_hw_queues, so > megaraid driver has to clear READ queue map's nr_queues, otherwise queue > map becomes broken if poll_queues is set as non-zero. > > Fixes: 9e4bec5b2a23 ("scsi: megaraid_sas: mq_poll support") Ping... Without this fix, it is easy to observe fio hang when running cpu hotplug test in case of 'poll_queues > 0'. Thanks, Ming