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Date: Thu, 3 Jun 2010 15:36:23 +0900
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Subject: Re: [PATCH 09/12] oom: remove PF_EXITING check completely
Message-Id: <20100603153623.40875640.kamezawa.hiroyu@jp.fujitsu.com>
In-Reply-To: <20100603152436.7262.A69D9226@jp.fujitsu.com>
References: <20100603135106.7247.A69D9226@jp.fujitsu.com>
	<20100603152436.7262.A69D9226@jp.fujitsu.com>
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Sender: owner-linux-mm@kvack.org
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: "Luis Claudio R. Goncalves" <lclaudio@uudg.org>, LKML <linux-kernel@vger.kernel.org>, linux-mm <linux-mm@kvack.org>, Oleg Nesterov <oleg@redhat.com>, David Rientjes <rientjes@google.com>, Andrew Morton <akpm@linux-foundation.org>, Nick Piggin <npiggin@suse.de>
List-ID: <linux-mm.kvack.org>

On Thu,  3 Jun 2010 15:25:18 +0900 (JST)
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> wrote:

> Currently, PF_EXITING check is completely broken. because 1) It only
> care main-thread and ignore sub-threads 2) If user enable core-dump
> feature, it can makes deadlock because the task during coredump ignore
> SIGKILL.
> 
> The deadlock is certenaly worst result, then, minor PF_EXITING
> optimization worth is relatively ignorable.
> 
> This patch removes it.
> 
> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
> Acked-by: Oleg Nesterov <oleg@redhat.com>

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


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