From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754450AbZBJKnX (ORCPT ); Tue, 10 Feb 2009 05:43:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753434AbZBJKnK (ORCPT ); Tue, 10 Feb 2009 05:43:10 -0500 Received: from ipmail01.adl6.internode.on.net ([203.16.214.146]:32533 "EHLO ipmail01.adl6.internode.on.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753694AbZBJKnJ (ORCPT ); Tue, 10 Feb 2009 05:43:09 -0500 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: ApoEAE/okEl5LClx/2dsb2JhbADTCoQaBg X-IronPort-AV: E=Sophos;i="4.38,185,1233495000"; d="scan'208";a="287384453" Date: Tue, 10 Feb 2009 21:43:04 +1100 From: Dave Chinner To: Christoph Hellwig Cc: Alessandro Bono , linux-xfs , linux-kernel Subject: Re: XFS kernel BUG at fs/buffer.c:470! with 2.6.28.4 Message-ID: <20090210104304.GP8830@disturbed> Mail-Followup-To: Christoph Hellwig , Alessandro Bono , linux-xfs , linux-kernel References: <1234011974.7435.11.camel@champagne.cantina> <20090208222859.GA2532@infradead.org> <1234132752.12370.0.camel@champagne.cantina> <20090208224249.GA11931@infradead.org> <1234133120.12370.7.camel@champagne.cantina> <20090209075308.GA7360@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090209075308.GA7360@infradead.org> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Feb 09, 2009 at 02:53:08AM -0500, Christoph Hellwig wrote: > On Sun, Feb 08, 2009 at 11:45:20PM +0100, Alessandro Bono wrote: > > sure, attached > > That would be a missing PagePrivate bit in page_buffers() called from > end_buffer_async_write. PG_private can only be cleared via drop_buffers > which requires the page not having PG_writeback set which must be > set until end_buffer_async_write is done. Very strange, and all this > is generic code without xfs involvement. Did this happen once > or can you reproduce it? Hmmmm - i wonder if this has anything to do with the writeback fixes that went into 2.6.28.2? Alessandro, can you revert to 2.6.28.1 (not plain 2.6.28) and see if you can reproduce the problem? Cheers, Dave. -- Dave Chinner david@fromorbit.com