From: "Aneesh Kumar K.V" Subject: Re: [Bug 13369] kernel BUG at fs/ext4/inode.c:3123 Date: Mon, 25 May 2009 00:50:24 +0530 Message-ID: <20090524192024.GA11337@skywalker> References: <200905241828.n4OISN1R025683@demeter.kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-ext4@vger.kernel.org To: bugzilla-daemon@bugzilla.kernel.org Return-path: Received: from e23smtp03.au.ibm.com ([202.81.31.145]:38653 "EHLO e23smtp03.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751004AbZEXTUa (ORCPT ); Sun, 24 May 2009 15:20:30 -0400 Received: from d23relay01.au.ibm.com (d23relay01.au.ibm.com [202.81.31.243]) by e23smtp03.au.ibm.com (8.13.1/8.13.1) with ESMTP id n4OJIWKX025075 for ; Mon, 25 May 2009 05:18:32 +1000 Received: from d23av02.au.ibm.com (d23av02.au.ibm.com [9.190.235.138]) by d23relay01.au.ibm.com (8.13.8/8.13.8/NCO v9.2) with ESMTP id n4OJKUtl328014 for ; Mon, 25 May 2009 05:20:30 +1000 Received: from d23av02.au.ibm.com (loopback [127.0.0.1]) by d23av02.au.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id n4OJKUiG003921 for ; Mon, 25 May 2009 05:20:30 +1000 Content-Disposition: inline In-Reply-To: <200905241828.n4OISN1R025683@demeter.kernel.org> Sender: linux-ext4-owner@vger.kernel.org List-ID: Can you try with the patch series found at http://article.gmane.org/gmane.comp.file-systems.ext4/12962 (Threading is not working for gmane currently so the two patches you may need are http://thread.gmane.org/gmane.linux.file-systems/31465 http://thread.gmane.org/gmane.comp.file-systems.ext4/12960 ) I guess mmap and truncate combination can result in we missing pagefault when we write to second block in the same page. That would mean we may have to do block allocation in writepage. -aneesh