linux-kernel - Re: block: eliminate ELEVATOR_INSERT

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Message-ID: <4D9364B0.5020604@kernel.dk>
Date:	Wed, 30 Mar 2011 19:13:20 +0200
From:	Jens Axboe <axboe@...nel.dk>
To:	Tejun Heo <tj@...nel.org>
CC:	Vivek Goyal <vgoyal@...hat.com>, Mike Snitzer <snitzer@...hat.com>,
	Jeff Moyer <jmoyer@...hat.com>,
	Markus Trippelsdorf <markus@...ppelsdorf.de>,
	Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
	linux-kernel@...r.kernel.org, Chris Mason <chris.mason@...cle.com>,
	hch@...radead.org
Subject: Re: block: eliminate ELEVATOR_INSERT_REQUEUE

On 2011-03-30 17:30, Tejun Heo wrote:
> On Wed, Mar 30, 2011 at 11:22:48AM -0400, Vivek Goyal wrote:
>> So wee need this as stable fix because FLUSH request can get ahead of
>> REQUEUED requests and it can break some drivers?
> 
> Yes, I think so.  All we need is just replacing elv_insert() calls in
> blk-flush.c with list_add_tail().  Something like the following.  I'll
> test it and send a proper patch later.  Thanks.

I'd suggest I just mark the queued patch for stable.

-- 
Jens Axboe

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