From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751960Ab0FAA7D (ORCPT ); Mon, 31 May 2010 20:59:03 -0400 Received: from fgwmail6.fujitsu.co.jp ([192.51.44.36]:39004 "EHLO fgwmail6.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751236Ab0FAA7A (ORCPT ); Mon, 31 May 2010 20:59:00 -0400 X-SecurityPolicyCheck-FJ: OK by FujitsuOutboundMailChecker v1.3.1 Date: Tue, 1 Jun 2010 09:54:46 +0900 From: KAMEZAWA Hiroyuki To: KOSAKI Motohiro Cc: LKML , linux-mm , Oleg Nesterov , David Rientjes , Andrew Morton , Nick Piggin Subject: Re: [PATCH 1/5] oom: select_bad_process: check PF_KTHREAD instead of !mm to skip kthreads Message-Id: <20100601095446.3eefdec2.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20100531182526.1843.A69D9226@jp.fujitsu.com> References: <20100531182526.1843.A69D9226@jp.fujitsu.com> Organization: FUJITSU Co. LTD. X-Mailer: Sylpheed 3.0.2 (GTK+ 2.10.14; i686-pc-mingw32) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 31 May 2010 18:33:06 +0900 (JST) KOSAKI Motohiro wrote: > From: Oleg Nesterov > 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 > Acked-by: David Rientjes > Signed-off-by: KOSAKI Motohiro Reviewed-by: KAMEZAWA Hiroyuki