linux-kernel - Re: [PATCH 09/11] oom: remove child->mm check from oom_kill

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Date:	Wed, 30 Jun 2010 23:30:13 +0900
From:	Minchan Kim <minchan.kim@...il.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Rientjes <rientjes@...gle.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Andrea Arcangeli <aarcange@...hat.com>
Subject: Re: [PATCH 09/11] oom: remove child->mm check from
 oom_kill_process()

On Wed, Jun 30, 2010 at 06:32:44PM +0900, KOSAKI Motohiro wrote:
> 
> Current "child->mm == p->mm" mean prevent to select vfork() task.
> But we don't have any reason to don't consider vfork().

I guess "child->mm == p->mm" is for losing the minimal amount of work done
as comment say. But frankly speaking, I don't understand it, either.
Maybe "One shot, two kill" problem?

Andrea. Could you explain it?

-- 
Kind regards,
Minchan Kim
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