From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda1.sgi.com [192.48.157.11]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id q1T0ru8n231157 for ; Tue, 28 Feb 2012 18:53:56 -0600 Received: from ipmail06.adl2.internode.on.net (ipmail06.adl2.internode.on.net [150.101.137.129]) by cuda.sgi.com with ESMTP id 9JBAyIUNgcdjS96k for ; Tue, 28 Feb 2012 16:53:54 -0800 (PST) Date: Wed, 29 Feb 2012 11:53:51 +1100 From: Dave Chinner Subject: Re: Warning from unlock_new_inode Message-ID: <20120229005351.GV3592@dastard> References: <20120222220137.GB3650@quack.suse.cz> <20120228083444.GB22995@infradead.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20120228083444.GB22995@infradead.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: Christoph Hellwig Cc: Jan Kara , xfs@oss.sgi.com On Tue, Feb 28, 2012 at 03:34:44AM -0500, Christoph Hellwig wrote: > On Wed, Feb 22, 2012 at 11:01:37PM +0100, Jan Kara wrote: > > Hello, > > > > while running fsstress on XFS partition with 3.3-rc4 kernel + my freeze > > fixes (they do not touch anything relevant AFAICT) I've got the following > > warning: > > That's stressing including freezes or without? Do you have a better > description of te workload? > > Either way it's an odd one, I can't see any obvious way how this would > happen. FWIW, I'm trying to track down exactly the same warning on a RHEL6.2 kernel being triggered by NFS filehandle lookup. The problem is being being reproduced reliably by a well known NFS benchmark, but this gives more a bit more information on where a race condition in the inode lookup may exist. That is, the only common element here in these two lookup paths is that they are the only two calls to xfs_iget() with XFS_IGET_UNTRUSTED set in the flags. I doubt this is a coincidence. Cheers, Dave. -- Dave Chinner david@fromorbit.com _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs