linux-kernel - Re: [patch 6/6] ide: improve handling of Power Management requests

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Date:	Wed, 24 Jun 2009 03:36:33 +0200
From:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [patch 6/6] ide: improve handling of Power Management requests

On Wednesday 24 June 2009 01:24:02 David Miller wrote:
> From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
> Date: Tue, 23 Jun 2009 23:35:56 +0200
> 
> > From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
> > Subject: [PATCH] ide: improve handling of Power Management requests
> > 
> > Make hwif->rq point to PM request during PM sequence and do not allow
> > any other types of requests to slip in (the old comment was never correct
> > as there should be no such requests generated during PM sequence).
> > 
> > Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
> > ---
> > This was tested in the past (with an additional testing from Borislav)
> > however there were block layer changes in the meantime so you may want
> > to give it some more testing time just to be sure.
> 
> In looking at this change, it occurs to me that this queue blocking
> facility could also be used to solve the user SET_XFER race.
> 
> Couldn't it?

Probably.  This is software, almost everything is possible.. ;)
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