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
