From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932179AbZHLIXg (ORCPT ); Wed, 12 Aug 2009 04:23:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754712AbZHLIXf (ORCPT ); Wed, 12 Aug 2009 04:23:35 -0400 Received: from one.firstfloor.org ([213.235.205.2]:40200 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754322AbZHLIXe (ORCPT ); Wed, 12 Aug 2009 04:23:34 -0400 Date: Wed, 12 Aug 2009 10:23:31 +0200 From: Andi Kleen To: Nick Piggin Cc: Andi Kleen , Hidehiro Kawai , tytso@mit.edu, hch@infradead.org, mfasheh@suse.com, aia21@cantab.net, hugh.dickins@tiscali.co.uk, swhiteho@redhat.com, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, fengguang.wu@intel.com, Satoshi OSHIMA , Taketoshi Sakuraba Subject: Re: [PATCH] [16/19] HWPOISON: Enable .remove_error_page for migration aware file systems Message-ID: <20090812082331.GD28848@basil.fritz.box> References: <200908051136.682859934@firstfloor.org> <20090805093643.E0C00B15D8@basil.firstfloor.org> <4A7FBFD1.2010208@hitachi.com> <20090810074421.GA6838@basil.fritz.box> <4A80EAA3.7040107@hitachi.com> <20090811071756.GC14368@basil.fritz.box> <20090812080540.GA32342@wotan.suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090812080540.GA32342@wotan.suse.de> User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > page corruption, IMO, because by definition they should be able to > tolerate panic. But if they do not know about this change to -EIO > semantics, then it is quite possible to cause problems. There's no change really. You already have this problem with any metadata error, which can cause similar trouble. If the application handles those correctly it will also handle hwpoison correctly. -Andi -- ak@linux.intel.com -- Speaking for myself only. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with ESMTP id 9B6EE6B0055 for ; Wed, 12 Aug 2009 04:23:27 -0400 (EDT) Date: Wed, 12 Aug 2009 10:23:31 +0200 From: Andi Kleen Subject: Re: [PATCH] [16/19] HWPOISON: Enable .remove_error_page for migration aware file systems Message-ID: <20090812082331.GD28848@basil.fritz.box> References: <200908051136.682859934@firstfloor.org> <20090805093643.E0C00B15D8@basil.firstfloor.org> <4A7FBFD1.2010208@hitachi.com> <20090810074421.GA6838@basil.fritz.box> <4A80EAA3.7040107@hitachi.com> <20090811071756.GC14368@basil.fritz.box> <20090812080540.GA32342@wotan.suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090812080540.GA32342@wotan.suse.de> Sender: owner-linux-mm@kvack.org To: Nick Piggin Cc: Andi Kleen , Hidehiro Kawai , tytso@mit.edu, hch@infradead.org, mfasheh@suse.com, aia21@cantab.net, hugh.dickins@tiscali.co.uk, swhiteho@redhat.com, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, fengguang.wu@intel.com, Satoshi OSHIMA , Taketoshi Sakuraba List-ID: > page corruption, IMO, because by definition they should be able to > tolerate panic. But if they do not know about this change to -EIO > semantics, then it is quite possible to cause problems. There's no change really. You already have this problem with any metadata error, which can cause similar trouble. If the application handles those correctly it will also handle hwpoison correctly. -Andi -- ak@linux.intel.com -- Speaking for myself only. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org