linux-kernel - Re: [PATCH 4/9] oom: oom_kill_process() need to check p is unkillable

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Date:	Wed, 16 Jun 2010 21:19:31 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.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>,
	Minchan Kim <minchan.kim@...il.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [PATCH 4/9] oom: oom_kill_process() need to check p is
 unkillable

On Thu, 17 Jun 2010, KOSAKI Motohiro wrote:

> When oom_kill_allocating_task is enabled, an argument task of
> oom_kill_process is not selected by select_bad_process(), It's
> just out_of_memory() caller task. It mean the task can be
> unkillable. check it first.
> 

This should be unnecessary if oom_kill_process() appropriately returns 
non-zero when it cannot kill a task.  What problem are you addressing with 
this fix?
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