linux-kernel - Re: [PATCH] Fix failure to resume from initrds

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Message-ID: <20070914122018.GA1671@elf.ucw.cz>
Date:	Fri, 14 Sep 2007 14:20:18 +0200
From:	Pavel Machek <pavel@....cz>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Nigel Cunningham <nigel@...el.suspend2.net>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Fix failure to resume from initrds

Hi!

> From: Nigel Cunningham <nigel@...el.suspend2.net>
> 
> Commit 831441862956fffa17b9801db37e6ea1650b0f69 (Freezer: make kernel threads
> nonfreezable by default) breaks freezing when attempting to resume from an
> initrd, because the init (which is freezeable) spins while waiting for another
> thread to run /linuxrc, but doesn't check whether it has been told to enter
> the refrigerator. The original patch replaced a call to try_to_freeze() with a
> call to yield(). I believe a simple reversion is wrong because
> if !CONFIG_PM_SLEEP, try_to_freeze() is a noop. It should still yield.
> 
> Signed-off-by: Nigel Cunningham <nigel@...el.suspend2.net>
> Acked-by: Rafael J. Wysocki <rjw@...k.pl>

ACK.
								Pavel

-- 
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