From: Nigel Cunningham <ncunningham@cyclades.com>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org, Jeff Garzik <jeff@garzik.org>
Subject: Re: [PATCH] Make libata not powerdown drivers on PM_EVENT_FREEZE.
Date: Thu, 23 Mar 2006 22:16:03 +1000 [thread overview]
Message-ID: <200603232216.08538.ncunningham@cyclades.com> (raw)
In-Reply-To: <20060323040649.3a6c96f1.akpm@osdl.org>
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Hi.
On Thursday 23 March 2006 22:06, Andrew Morton wrote:
> Nigel Cunningham <ncunningham@cyclades.com> wrote:
> > At the moment libata doesn't pass pm_message_t down ata_device_suspend.
> > This causes drives to be powered down when we just want a freeze,
> > causing unnecessary wear and tear. This patch gets pm_message_t passed
> > down so that it can be used to determine whether to power down the
> > drive.
>
> Does this explain http://bugzilla.kernel.org/show_bug.cgi?id=6264 ?
Yes, it does.
> This might be 2.6.16.1 material - how irritating is it?
Very. It extends the time to write the image, but as mentioned above, I'm more
concerned by the fact that (assuming I understand correctly), it's using up
the limited number of power cycles a drive can handle.
Regards,
Nigel
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next prev parent reply other threads:[~2006-03-23 12:17 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-23 11:51 [PATCH] Make libata not powerdown drivers on PM_EVENT_FREEZE Nigel Cunningham
2006-03-23 12:06 ` Andrew Morton
2006-03-22 23:26 ` Pavel Machek
2006-03-23 12:16 ` Nigel Cunningham [this message]
2006-03-23 13:09 ` Jens Axboe
2006-03-23 13:20 ` Nigel Cunningham
2006-03-23 13:22 ` Nigel Cunningham
2006-03-23 13:52 ` Jeff Garzik
2006-03-23 21:01 ` Nigel Cunningham
2006-03-23 22:45 ` Mark Lord
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