Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752881AbYANNpe (ORCPT ); Mon, 14 Jan 2008 08:45:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750851AbYANNp0 (ORCPT ); Mon, 14 Jan 2008 08:45:26 -0500 Received: from fxip-0047f.externet.hu ([88.209.222.127]:38571 "EHLO pomaz-ex.szeredi.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750791AbYANNp0 (ORCPT ); Mon, 14 Jan 2008 08:45:26 -0500 To: peterz@infradead.org CC: salikhmetov@gmail.com, linux-mm@kvack.org, jakob@unthought.net, linux-kernel@vger.kernel.org, valdis.kletnieks@vt.edu, riel@redhat.com, ksm@42.dk, staubach@redhat.com, jesper.juhl@gmail.com, torvalds@linux-foundation.org, akpm@linux-foundation.org, protasnb@gmail.com, nickpiggin@yahoo.com.au In-reply-to: <1200317990.15103.11.camel@twins> (message from Peter Zijlstra on Mon, 14 Jan 2008 14:39:50 +0100) Subject: Re: [PATCH 2/2] updating ctime and mtime at syncing References: <12001991991217-git-send-email-salikhmetov@gmail.com> <12001992023392-git-send-email-salikhmetov@gmail.com> <4df4ef0c0801140422l1980d507v1884ad8d8e8bf6d3@mail.gmail.com> <1200317737.15103.8.camel@twins> <1200317990.15103.11.camel@twins> Message-Id: From: Miklos Szeredi Date: Mon, 14 Jan 2008 14:45:18 +0100 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 608 Lines: 16 > More fun, it would require marking them RO but leaving the dirty bit > set, because this ext3 fudge where we confuse the page dirty state - or > did that get fixed? That got fixed by Nick, I think. The alternative to marking pages RO, is to walk the PTEs in MS_ASYNC, note the dirty bit and mark pages clean. But it's possibly even more complicated. Miklos -- 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/