From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pb0-f53.google.com (mail-pb0-f53.google.com [209.85.160.53]) by kanga.kvack.org (Postfix) with ESMTP id 84FC26B0035 for ; Thu, 28 Nov 2013 21:06:32 -0500 (EST) Received: by mail-pb0-f53.google.com with SMTP id ma3so13568649pbc.12 for ; Thu, 28 Nov 2013 18:06:32 -0800 (PST) Received: from mga14.intel.com (mga14.intel.com. [143.182.124.37]) by mx.google.com with ESMTP id dn2si7121467pbc.33.2013.11.28.18.06.30 for ; Thu, 28 Nov 2013 18:06:31 -0800 (PST) From: "Ma, Xindong" Subject: RE: [PATCH] Fix race between oom kill and task exit Date: Fri, 29 Nov 2013 02:06:25 +0000 Message-ID: <3917C05D9F83184EAA45CE249FF1B1DD025310D2@SHSMSX103.ccr.corp.intel.com> References: <3917C05D9F83184EAA45CE249FF1B1DD0253093A@SHSMSX103.ccr.corp.intel.com> <20131128063505.GN3556@cmpxchg.org> <20131128120018.GL2761@dhcp22.suse.cz> <20131128183830.GD20740@redhat.com> In-Reply-To: <20131128183830.GD20740@redhat.com> Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Sender: owner-linux-mm@kvack.org List-ID: To: Oleg Nesterov , Michal Hocko Cc: William Dauchy , Johannes Weiner , "akpm@linux-foundation.org" , "rientjes@google.com" , "rusty@rustcorp.com.au" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , Peter Zijlstra , "gregkh@linuxfoundation.org" , "Tu, Xiaobing" , azurIt , Sameer Nanda > From: Oleg Nesterov [mailto:oleg@redhat.com] > Sent: Friday, November 29, 2013 2:39 AM > To: Michal Hocko > Cc: William Dauchy; Johannes Weiner; Ma, Xindong; > akpm@linux-foundation.org; rientjes@google.com; rusty@rustcorp.com.au; > linux-mm@kvack.org; linux-kernel@vger.kernel.org; Peter Zijlstra; > gregkh@linuxfoundation.org; Tu, Xiaobing; azurIt; Sameer Nanda > Subject: Re: [PATCH] Fix race between oom kill and task exit >=20 > On 11/28, Michal Hocko wrote: > > > > They are both trying to solve the same issue. Neither of them is > > optimal unfortunately. >=20 > yes, but this one doesn't look right. >=20 > > Oleg said he would look into this and I have seen some patches but > > didn't geto check them. >=20 > Only preparations so far. >=20 > Oleg. I was not aware there's a long story for this issue. I hit this issue a lot= of times during stress test and root caused it. After applying my patch, I= did extensive test on 5 machines for a long time, it does not reproduced a= nymore so I submitted the patch. I will do more research on this issue. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org