Re: [PATCH BUGFIX 1/1] block, bfq: add requeue-request hook

From: Mike Galbraith
Date: Tue Feb 06 2018 - 03:47:57 EST


On Tue, 2018-02-06 at 09:37 +0100, Oleksandr Natalenko wrote:
> Hi.
>
> 06.02.2018 08:56, Mike Galbraith wrote:
> > I was doing kbuilds, and it blew up on me twice. Switching back to cfq
> > seemed to confirm it was indeed the patch causing trouble, but that's
> > by no means a certainty.
>
> Just to note, I was using v4.15.1, not the latest git HEAD. Are you able
> to reproduce it on the stable kernel?

I didn't even try to wedge it into 4.15.1, tested it as posted.

> Also, assuming this issue might be
> unrelated to the BFQ itself, did you manage to reproduce the trouble
> with another blk-mq scheduler (not CFQ, but mq-deadline/Kyber)?

I can give another scheduler a go this afternoon.

-Mike