linux-kernel - Re: [PATCH 1/5] oom: select_bad_process: check PF

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Message-Id: <20100601095446.3eefdec2.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Tue, 1 Jun 2010 09:54:46 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>,
	Oleg Nesterov <oleg@...hat.com>,
	David Rientjes <rientjes@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Nick Piggin <npiggin@...e.de>
Subject: Re: [PATCH 1/5] oom: select_bad_process: check PF_KTHREAD instead
 of !mm to skip kthreads

On Mon, 31 May 2010 18:33:06 +0900 (JST)
KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com> wrote:

> From: Oleg Nesterov <oleg@...hat.com>
> Subject: oom: select_bad_process: check PF_KTHREAD instead of !mm to skip kthreads
> 
> select_bad_process() thinks a kernel thread can't have ->mm != NULL, this
> is not true due to use_mm().
> 
> Change the code to check PF_KTHREAD.
> 
> Signed-off-by: Oleg Nesterov <oleg@...hat.com>
> Acked-by: David Rientjes <rientjes@...gle.com>
> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>

Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>

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