linux-kernel - Re: [PATCH 1/6] Hibernation: Introduce system_entering

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Date:	Sat, 4 Oct 2008 12:14:08 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Tejun Heo <htejun@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Jeff Garzik <jeff@...zik.org>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	linux-ide@...r.kernel.org, Thomas Renninger <trenn@...e.de>,
	Robert Hancock <hancockr@...w.ca>,
	LKML <linux-kernel@...r.kernel.org>,
	Frans Pop <elendil@...net.nl>,
	Maciej Rutecki <maciej.rutecki@...il.com>
Subject: Re: [PATCH 1/6] Hibernation: Introduce system_entering_hibernation

On Saturday, 4 of October 2008, Tejun Heo wrote:
> Rafael J. Wysocki wrote:
> > From: Rafael J. Wysocki <rjw@...k.pl>
> > 
> > Hibernation: Introduce system_entering_hibernation
> > 
> > Introduce boolean function system_entering_hibernation() returning
> > 'true' during the last phase of hibernation, in which devices are
> > being put into low power states and the sleep state (for example,
> > ACPI S4) is finally entered.
> > 
> > Some device drivers need such a function to check if the system is
> > in the final phase of hibernation.  In particular, some SATA drivers
> > are going to use it for blacklisting systems in which the disks
> > should not be spun down during the last phase of hibernation (the
> > BIOS will do that anyway).
> > 
> > Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
> 
> applied 1-6 to tj-upstream
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata-dev.git tj-upstream
>   http://git.kernel.org/?p=linux/kernel/git/tj/libata-dev.git;a=shortlog;h=tj-upstream

Thanks a lot,
Rafael
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