From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id o95GqhDD236573 for ; Tue, 5 Oct 2010 11:52:43 -0500 Message-ID: <4CAB5874.9060106@kernel.org> Date: Tue, 05 Oct 2010 18:55:16 +0200 From: Tejun Heo MIME-Version: 1.0 Subject: Re: -mm: xfs lockdep warning References: <201009161546.16909.ruirui.r.yang@tieto.com> <20100917005227.GJ24409@dastard> <20100920191355.GA28443@infradead.org> <4CA997DF.5030008@kernel.org> <20101004092107.GJ4681@dastard> <4CAB5779.5020901@kernel.org> In-Reply-To: <4CAB5779.5020901@kernel.org> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: Torsten Kaiser Cc: Yang Ruirui , linux-kernel@vger.kernel.org, xfs@oss.sgi.com, Christoph Hellwig , Alex Elder , Andrew Morton On 10/05/2010 06:51 PM, Tejun Heo wrote: > On 10/05/2010 12:09 PM, Torsten Kaiser wrote: >> 2) the hang with 2.6.35-rc5 I have seen twice (triggered probably by >> high load while building KOffice on an tmpfs) > > The trace doesn't seem to firmly point at xfs locking up. There are > md and dm crypt involved. Are you sure this is locking up inside xfs? > Also, can you please enable frame pointers so that we can get more > reliable backtrace? > >> 3) the lockdep issue that started this thread and that I am seeing in >> mainline 2.6.36-rc5 and -rc6 and that seems to be rather easy to >> trigger for me. >> >> Because 3) is regarded as a false positive, it should not be the cause >> of 2) > > For now, let's not draw any conclusion or mix the issues. I'll look > up the original thread and look into what the lockdep warning means. Ah, okay, David already looked into it and concluded it to be a spurious one. Can you please attach full kernel message of the lockup? Thanks. -- tejun _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs