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

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Date:   Tue, 06 Feb 2018 08:56:01 +0100
From:   Mike Galbraith <efault@....de>
To:     Oleksandr Natalenko <oleksandr@...alenko.name>,
        Paolo Valente <paolo.valente@...aro.org>
Cc:     Jens Axboe <axboe@...nel.dk>, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, ulf.hansson@...aro.org,
        broonie@...nel.org, linus.walleij@...aro.org,
        bfq-iosched@...glegroups.com, alban.browaeys@...il.com,
        ming.lei@...hat.com, ivan@...ios.org, 169364@...denti.unimore.it,
        Serena Ziviani <ziviani.serena@...il.com>
Subject: Re: [PATCH BUGFIX 1/1] block, bfq: add requeue-request hook

On Tue, 2018-02-06 at 08:44 +0100, Oleksandr Natalenko wrote:
> Hi, Paolo.
> 
> I can confirm that this patch fixes cfdisk hang for me. I've also tried 
> to trigger the issue Mike has encountered, but with no luck (maybe, I 
> wasn't insistent enough, just was doing dd on usb-storage device in the 
> VM).

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.

	-Mike