From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752417AbWL2Mel (ORCPT ); Fri, 29 Dec 2006 07:34:41 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752420AbWL2Mel (ORCPT ); Fri, 29 Dec 2006 07:34:41 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:33230 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752376AbWL2Mek (ORCPT ); Fri, 29 Dec 2006 07:34:40 -0500 Date: Fri, 29 Dec 2006 13:31:27 +0100 From: Ingo Molnar To: Linus Torvalds Cc: Segher Boessenkool , David Miller , nickpiggin@yahoo.com.au, kenneth.w.chen@intel.com, guichaz@yahoo.fr, hugh@veritas.com, Linux Kernel Mailing List , ranma@tdiedrich.de, gordonfarquharson@gmail.com, Andrew Morton , a.p.zijlstra@chello.nl, tbm@cyrius.com, arjan@infradead.org, andrei.popa@i-neo.ro Subject: Re: Ok, explained.. (was Re: [PATCH] mm: fix page_mkclean_one) Message-ID: <20061229123127.GA19563@elte.hu> References: <20061228114517.3315aee7.akpm@osdl.org> <20061228.143815.41633302.davem@davemloft.net> <3d6d8711f7b892a11801d43c5996ebdf@kernel.crashing.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.2i X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -5.9 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-5.9 required=5.9 tests=ALL_TRUSTED,BAYES_00 autolearn=no SpamAssassin version=3.0.3 -3.3 ALL_TRUSTED Did not pass through any untrusted hosts -2.6 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Linus Torvalds wrote: > > Hmm? I'd love it if somebody else wrote the patch and tested it, > > because I'm getting sick and tired of this bug ;) > > Who the hell am I kidding? I haven't been able to sleep right for the > last few days over this bug. It was really getting to me. > > And putting on the thinking cap, there's actually a fairly simple an > nonintrusive patch. [...] ok, your patch seems to fix the testcase here too on -rc2-rt. [ Damn, i should have slept a bit more, that would have saved me a ~4 hour debug and tracing session today to analyze your testcase, just to find your patch and your explanation on lkml, right after i sent my analysis and workaround patch ;-) At least now we know it from two independent tracing results that the suspect code is the same. ] Ingo