Re: v4.15 and I/O hang with BFQ

From: Ming Lei
Date: Tue Jan 30 2018 - 09:40:29 EST


On Tue, Jan 30, 2018 at 03:30:28PM +0100, Oleksandr Natalenko wrote:
> Hi.
>
...
> systemd-udevd-271 [000] .... 4.311033: bfq_insert_requests: insert
> rq->0
> systemd-udevd-271 [000] ...1 4.311037: blk_mq_do_dispatch_sched:
> not get rq, 1
> cfdisk-408 [000] .... 13.484220: bfq_insert_requests: insert
> rq->1
> kworker/0:1H-174 [000] .... 13.484253: blk_mq_do_dispatch_sched:
> not get rq, 1
> ===
>
> Looks the same, right?

Yeah, same with before.

--
Ming