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

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Message-Id: <200709112301.52724.nigel@nigel.suspend2.net>
Date:	Tue, 11 Sep 2007 23:01:51 +1000
From:	Nigel Cunningham <nigel@...el.suspend2.net>
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 again.

On Tuesday 11 September 2007 21:55:06 Rafael J. Wysocki wrote:
> On Tuesday, 11 September 2007 13:27, Nigel Cunningham wrote:
> > 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.
> 
> Well, strange.  My x86_64 SMP machines don't need the patch too.

Oh well. I'm probably doing something wrong then and haven't clicked yet.

Regards,

Nigel
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