linux-kernel - Re: blk-mq flush fix

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Message-ID: <20131027222914.GG22549@kernel.dk>
Date:	Sun, 27 Oct 2013 22:29:25 +0000
From:	Jens Axboe <axboe@...nel.dk>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Alexander Gordeev <agordeev@...hat.com>, Tejun Heo <tj@...nel.org>,
	Nicholas Bellinger <nab@...ux-iscsi.org>,
	linux-kernel@...r.kernel.org
Subject: Re: blk-mq flush fix

On Sat, Oct 26 2013, Christoph Hellwig wrote:
> I think this variant of the patch from Alexander should fix the issue
> in a minimally invasive way.  Longer term I'd prefer to use q->flush_rq
> like in the non-mq case by copying over the context and tag information.

This one is pretty simple, we could definitely use it as a band aid. I
too would greatly prefer using the static ->flush_rq instead. Just have
it marked to bypass most of the free logic.

I'll add this one.

-- 
Jens Axboe

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