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

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Message-Id: <200709112127.58597.ncunningham@crca.org.au>
Date:	Tue, 11 Sep 2007 21:27:58 +1000
From:	Nigel Cunningham <ncunningham@...a.org.au>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	nigel@...pend2.net, LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH] Fix failure to resume from initrds.

Hi.

On Tuesday 11 September 2007 21:04:22 Rafael J. Wysocki wrote:
> On Tuesday, 11 September 2007 05:54, Nigel Cunningham wrote:
> > Hi all.
> > 
> > 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.
> 
> Hm.
> 
> I use a resume from an initrd on a regular basis and it works without the 
patch
> below.
> 
> I think we need to investigate what happens in your test case a bit.

Ah. That makes me realise that I see that too - my AMD64 uniprocessor laptop 
didn't need the patch (guess that's why I didn't notice the need and ack'd 
the patch). But my x86 SMP machine... it needs this. I'll see if they're 
running on different processors.

Regards,

Nigel
-- 
Nigel Cunningham
Christian Reformed Church of Cobden
103 Curdie Street, Cobden 3266, Victoria, Australia
Ph. +61 3 5595 1185 / +61 417 100 574
Communal Worship: 11 am Sunday.
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