Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752628AbZI1BTo (ORCPT ); Sun, 27 Sep 2009 21:19:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752161AbZI1BTo (ORCPT ); Sun, 27 Sep 2009 21:19:44 -0400 Received: from one.firstfloor.org ([213.235.205.2]:40029 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752098AbZI1BTn (ORCPT ); Sun, 27 Sep 2009 21:19:43 -0400 Date: Mon, 28 Sep 2009 03:19:43 +0200 From: Andi Kleen To: Nick Piggin Cc: Hugh Dickins , Andi Kleen , Wu Fengguang , Andrew Morton , linux-mm@kvack.org, LKML Subject: Re: [RFC][PATCH] HWPOISON: remove the unsafe __set_page_locked() Message-ID: <20090928011943.GB1656@one.firstfloor.org> References: <20090926031537.GA10176@localhost> <20090926190645.GB14368@wotan.suse.de> <20090926213204.GX30185@one.firstfloor.org> <20090927192251.GB6327@wotan.suse.de> <20090927230118.GH6327@wotan.suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090927230118.GH6327@wotan.suse.de> User-Agent: Mutt/1.4.2.2i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 779 Lines: 22 > There is no real rush AFAIKS to fix this one single pagecache site > while we have problems with slab allocators and all other unaudited > places that nonatomically modify page flags with an elevated hwpoison ignores slab pages. > page reference ... just mark HWPOISON as broken for the moment, or > cut it down to do something much simpler I guess? Erm no. These cases are *EXTREMLY* unlikely to hit. I'll look into exploiting the ordering of the mapping assignment. -Andi -- ak@linux.intel.com -- Speaking for myself only. -- 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/