linux-kernel - Re: [linux-pm] [2.6.30-rc1-git2 regressions] Hibernation broken and (minor but annoying) audio problem

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Message-ID: <49DFF651.5080909@linux.intel.com>
Date:	Fri, 10 Apr 2009 18:45:53 -0700
From:	Arjan van de Ven <arjan@...ux.intel.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	"Rafael J. Wysocki" <rjw@...e.com>,
	linux-pm@...ts.linux-foundation.org, Takashi Iwai <tiwai@...e.de>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [linux-pm] [2.6.30-rc1-git2 regressions] Hibernation broken and
 (minor but annoying) audio problem

Linus Torvalds wrote:
> 
> Hmm.
> 
> I'm not 100% sure that patch is good.
> 
> The reason? I think it's going to deadlock if an async caller ends up 
> wanting to load a module, because then the nestecd 
> "async_synchronize_full()" will basically want to wait for itself.
> 
> So it's a good test-patch, and maybe no async caller ever loads a module, 
> but it makes me a bit nervous.
> 
> But the fact that it fixes things for you at least means that the _reason_ 
> for the problem is know, and maybe there are alternative solutions. Arjan?

I just got back from the LF summit and am catching up on mail; I'll take a look
at the history.
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