linux-kernel - Re: [PATCH] oom: skip frozen tasks

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Message-ID: <20110825151818.GA4003@redhat.com>
Date:	Thu, 25 Aug 2011 17:18:18 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	David Rientjes <rientjes@...gle.com>,
	Konstantin Khlebnikov <khlebnikov@...nvz.org>,
	linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [PATCH] oom: skip frozen tasks

On 08/25, Michal Hocko wrote:
>
> On Wed 24-08-11 12:31:26, David Rientjes wrote:
> >
> > That's obviously false since we call oom_killer_disable() in 
> > freeze_processes() to disable the oom killer from ever being called in the 
> > first place, so this is something you need to resolve with Rafael before 
> > you cause more machines to panic.
>
> I didn't mean suspend/resume path (that is protected by oom_killer_disabled)
> so the patch doesn't make any change.

Confused... freeze_processes() does try_to_freeze_tasks() before
oom_killer_disable() ?

Oleg.

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