Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756664AbZFCSso (ORCPT ); Wed, 3 Jun 2009 14:48:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755317AbZFCSrD (ORCPT ); Wed, 3 Jun 2009 14:47:03 -0400 Received: from one.firstfloor.org ([213.235.205.2]:37844 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755305AbZFCSrC (ORCPT ); Wed, 3 Jun 2009 14:47:02 -0400 From: Andi Kleen References: <20090603846.816684333@firstfloor.org> In-Reply-To: <20090603846.816684333@firstfloor.org> To: akpm@linux-foundation.org, npiggin@suse.de, linux-kernel@vger.kernel.org, linux-mm@kvack.org, fengguang.wu@intel.com Subject: [PATCH] [10/16] HWPOISON: Handle poisoned pages in set_page_dirty() Message-Id: <20090603184644.190E71D0281@basil.firstfloor.org> Date: Wed, 3 Jun 2009 20:46:43 +0200 (CEST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1051 Lines: 31 Bail out early in set_page_dirty for poisoned pages. We don't want any of the dirty accounting done or file system write back started, because the page will be just thrown away. Signed-off-by: Andi Kleen --- mm/page-writeback.c | 4 ++++ 1 file changed, 4 insertions(+) Index: linux/mm/page-writeback.c =================================================================== --- linux.orig/mm/page-writeback.c 2009-06-03 19:36:20.000000000 +0200 +++ linux/mm/page-writeback.c 2009-06-03 19:36:23.000000000 +0200 @@ -1304,6 +1304,10 @@ { struct address_space *mapping = page_mapping(page); + if (unlikely(PageHWPoison(page))) { + SetPageDirty(page); + return 0; + } if (likely(mapping)) { int (*spd)(struct page *) = mapping->a_ops->set_page_dirty; #ifdef CONFIG_BLOCK -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/