Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753614AbYGGJWS (ORCPT ); Mon, 7 Jul 2008 05:22:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750807AbYGGJWA (ORCPT ); Mon, 7 Jul 2008 05:22:00 -0400 Received: from fxip-0047f.externet.hu ([88.209.222.127]:59604 "EHLO pomaz-ex.szeredi.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751922AbYGGJV7 (ORCPT ); Mon, 7 Jul 2008 05:21:59 -0400 To: nickpiggin@yahoo.com.au CC: miklos@szeredi.hu, jamie@shareable.org, torvalds@linux-foundation.org, jens.axboe@oracle.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org, hugh@veritas.com In-reply-to: <200807071638.32955.nickpiggin@yahoo.com.au> (message from Nick Piggin on Mon, 7 Jul 2008 16:38:31 +1000) Subject: Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_complete_page2() References: <20080625124038.103406301@szeredi.hu> <20080625173837.GA10005@shareable.org> <200807071638.32955.nickpiggin@yahoo.com.au> Message-Id: From: Miklos Szeredi Date: Mon, 07 Jul 2008 11:21:34 +0200 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 759 Lines: 19 On Mon, 7 Jul 2008, Nick Piggin wrote: > I don't know what became of this thread, but I agree with everyone else > you should not skip clearing PG_uptodate here. If nothing else, it > weakens some important assertions in the VM. But I agree that splice > should really try harder to work with it and we should be a little > careful about just changing things like this. Sure, that's why I rfc'ed. But I'd still like to know, what *are* those assumptions in the VM that would be weakened by this? Thanks, 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/