From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755781Ab3EVSEq (ORCPT ); Wed, 22 May 2013 14:04:46 -0400 Received: from www.meduna.org ([92.240.244.38]:50003 "EHLO meduna.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751181Ab3EVSEo (ORCPT ); Wed, 22 May 2013 14:04:44 -0400 Message-ID: <519D08B0.8050707@meduna.org> Date: Wed, 22 May 2013 20:04:32 +0200 From: Stanislav Meduna User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130509 Thunderbird/17.0.6 MIME-Version: 1.0 To: Rik van Riel CC: Linus Torvalds , Steven Rostedt , "linux-rt-users@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , the arch/x86 maintainers , Hai Huang Subject: Re: [PATCH] mm: fix up a spurious page fault whenever it happens References: <5195ED8B.7060002@meduna.org> <1369183168.6828.168.camel@gandalf.local.home> <519CBB30.3060200@redhat.com> <20130522134111.33a695c5@cuia.bos.redhat.com> In-Reply-To: <20130522134111.33a695c5@cuia.bos.redhat.com> X-Enigmail-Version: 1.5.1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Authenticated-User: stano@meduna.org X-Authenticator: dovecot_plain X-Spam-Score: -6.9 X-Spam-Score-Int: -68 X-Exim-Version: 4.72 (build at 25-Oct-2012 18:35:58) X-Date: 2013-05-22 20:04:38 X-Connected-IP: 95.105.165.4:4440 X-Message-Linecount: 40 X-Body-Linecount: 20 X-Message-Size: 1552 X-Body-Size: 409 X-Received-Count: 1 X-Recipient-Count: 10 X-Local-Recipient-Count: 10 X-Local-Recipient-Defer-Count: 0 X-Local-Recipient-Fail-Count: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 22.05.2013 19:41, Rik van Riel wrote: >> I think you should also remove the >> >> if (flags & FAULT_FLAG_WRITE) Done >>> Can you test the attached patch? Nope. Fails with the same symptoms, min_flt skyrockets, the throttler activates and after 2 seconds all is well again. This is on Geode LX, I don't have the Celeron M at the hand now. Thank -- Stano