From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: with ECARTIS (v1.0.0; list xfs); Sun, 19 Oct 2008 02:05:59 -0700 (PDT) Received: from cuda.sgi.com (cuda1.sgi.com [192.48.168.28]) by oss.sgi.com (8.12.11.20060308/8.12.11/SuSE Linux 0.7) with ESMTP id m9J95rlL018997 for ; Sun, 19 Oct 2008 02:05:53 -0700 Received: from bombadil.infradead.org (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id F1195E7136D for ; Sun, 19 Oct 2008 02:07:35 -0700 (PDT) Received: from bombadil.infradead.org (bombadil.infradead.org [18.85.46.34]) by cuda.sgi.com with ESMTP id IuNROHBIPP48jhpL for ; Sun, 19 Oct 2008 02:07:35 -0700 (PDT) Date: Sun, 19 Oct 2008 05:07:02 -0400 From: Christoph Hellwig Subject: Re: XFS filesystem corruption on the arm(el) architecture Message-ID: <20081019090702.GA1925@infradead.org> References: <1222893502.5020.40.camel@moria> <20081002004556.GB30001@disturbed> <48E4213E.9090508@sandeen.net> <20081016212500.GA27228@deprecation.cyrius.com> <48F7BC9F.4080909@sandeen.net> <20081017070109.GA30726@deprecation.cyrius.com> <48F89E0F.6030307@sandeen.net> <20081018085752.GS25834@deprecation.cyrius.com> <20081019014830.GI31761@disturbed> <48FAA445.9050800@sandeen.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <48FAA445.9050800@sandeen.net> Sender: xfs-bounce@oss.sgi.com Errors-to: xfs-bounce@oss.sgi.com List-Id: xfs To: Eric Sandeen Cc: Martin Michlmayr , Tobias Frost , linux-kernel@vger.kernel.org, debian-arm@lists.debian.org, xfs@oss.sgi.com, kernel@wantstofly.org, Hiroki KUMAGAI On Sat, Oct 18, 2008 at 10:06:45PM -0500, Eric Sandeen wrote: > This is probably the vmap cache aliasing problem that we paid a bit of > attention to a few months ago, no? Shouldn't the cachepolicy switch take care of that? But yes, there are various problems with I/O on vmap regions with virtually indexed caches, see: http://www.spinics.net/lists/linux-arch/msg04301.html http://tree.celinuxforum.org/CelfPubWiki/JapanTechnicalJamboree21?action=AttachFile&do=get&target=celf_discussions.pdf Actually, looking again at the second document it shows exactly the symptoms you're seeing. > > -Eric > > ---end quoted text---