linux-kernel - Re: [PATCH 05/10] block: remove per-queue plugging

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Date:	Tue, 8 Mar 2011 21:27:24 +0100
From:	Jens Axboe <jaxboe@...ionio.com>
To:	Mike Snitzer <snitzer@...hat.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"hch@...radead.org" <hch@...radead.org>
Subject: Re: [PATCH 05/10] block: remove per-queue plugging

On 2011-03-08 21:21, Mike Snitzer wrote:
> On Tue, Mar 08 2011 at  7:16am -0500,
> Jens Axboe <jaxboe@...ionio.com> wrote:
> 
>> On 2011-03-03 23:13, Mike Snitzer wrote:
>>> I'm now hitting a lockdep issue, while running a 'for-2.6.39/stack-plug'
>>> kernel, when I try an fsync heavy workload to a request-based mpath
>>> device (the kernel ultimately goes down in flames, I've yet to look at
>>> the crashdump I took)
>>
>> Mike, can you re-run with the current stack-plug branch? I've fixed the
>> !CONFIG_BLOCK and rebase issues, and also added a change for this flush
>> on schedule event. It's run outside of the runqueue lock now, so
>> hopefully that should solve this one.
> 
> Works for me, thanks.

Super, thanks! Out of curiousity, did you use dm/md?

-- 
Jens Axboe

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