Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754004AbYA3A7Z (ORCPT ); Tue, 29 Jan 2008 19:59:25 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751244AbYA3A7P (ORCPT ); Tue, 29 Jan 2008 19:59:15 -0500 Received: from host36-195-149-62.serverdedicati.aruba.it ([62.149.195.36]:57094 "EHLO mx.cpushare.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750815AbYA3A7O (ORCPT ); Tue, 29 Jan 2008 19:59:14 -0500 Date: Wed, 30 Jan 2008 01:59:12 +0100 From: Andrea Arcangeli To: Christoph Lameter Cc: Robin Holt , Avi Kivity , Izik Eidus , Nick Piggin , kvm-devel@lists.sourceforge.net, Benjamin Herrenschmidt , Peter Zijlstra , steiner@sgi.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, daniel.blueman@quadrics.com, Hugh Dickins Subject: Re: [patch 2/6] mmu_notifier: Callbacks to invalidate address ranges Message-ID: <20080130005912.GC7233@v2.random> References: <20080128202923.849058104@sgi.com> <20080129162004.GL7233@v2.random> <20080129211759.GV7233@v2.random> <20080129220212.GX7233@v2.random> <20080130000039.GA7233@v2.random> <20080130000559.GB7233@v2.random> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 663 Lines: 13 On Tue, Jan 29, 2008 at 04:22:46PM -0800, Christoph Lameter wrote: > That is only partially true. pte are created wronly in order to track > dirty state these days. The first write will lead to a fault that switches > the pte to writable. When the page undergoes writeback the page again > becomes write protected. Thus our need to effectively deal with > page_mkclean. Well I was talking about anonymous memory. -- 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/