From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Lord <liml@rtr.ca>
Subject: Re: QUEUE_FLAG_CLUSTER: not working in 2.6.24 ?
Date: Thu, 13 Dec 2007 15:18:11 -0500
Message-ID: <47619383.3050508@rtr.ca>
References: <20071213185326.GQ26334@parisc-linux.org> <4761821F.3050602@rtr.ca> <20071213192633.GD10104@kernel.dk> <4761883A.7050908@rtr.ca> <476188C4.9030802@rtr.ca> <20071213193937.GG10104@kernel.dk> <47618B0B.8020203@rtr.ca> <20071213195350.GH10104@kernel.dk> <20071213200219.GI10104@kernel.dk> <476190BE.9010405@rtr.ca> <20071213200958.GK10104@kernel.dk> <476192BF.5050308@rtr.ca>
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To: Jens Axboe <jens.axboe@oracle.com>
Cc: Mark Lord <lkml@rtr.ca>, Matthew Wilcox <matthew@wil.cx>, IDE/ATA development list <linux-ide@vger.kernel.org>, Linux Kernel <linux-kernel@vger.kernel.org>, linux-scsi <linux-scsi@vger.kernel.org>
List-Id: linux-ide@vger.kernel.org

Mark Lord wrote:
> Jens Axboe wrote:
..
>> OK, it's a vm issue, I have tens of thousand "backward" pages after a
>> boot - IOW, bvec->bv_page is the page before bvprv->bv_page, not
>> reverse. So it looks like that bug got reintroduced.
> ...
> 
> Mmm.. shouldn't one of the front- or back- merge logics work for either order?
..

Belay that thought.  I'm slowly remembering how this is supposed to work now.  :)