From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965110AbVHJNeX (ORCPT ); Wed, 10 Aug 2005 09:34:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965112AbVHJNeX (ORCPT ); Wed, 10 Aug 2005 09:34:23 -0400 Received: from smtp.istop.com ([66.11.167.126]:9637 "EHLO smtp.istop.com") by vger.kernel.org with ESMTP id S965110AbVHJNeW (ORCPT ); Wed, 10 Aug 2005 09:34:22 -0400 From: Daniel Phillips To: David Howells Subject: Re: [RFC][patch 0/2] mm: remove PageReserved Date: Wed, 10 Aug 2005 23:34:42 +1000 User-Agent: KMail/1.7.2 Cc: Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, hugh@veritas.com References: <20050808145430.15394c3c.akpm@osdl.org> <200508090724.30962.phillips@arcor.de> <31567.1123679613@warthog.cambridge.redhat.com> In-Reply-To: <31567.1123679613@warthog.cambridge.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200508102334.43662.phillips@arcor.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wednesday 10 August 2005 23:13, David Howells wrote: > Andrew Morton wrote: > > > ...kill PG_checked please :) Or at least keep it from spreading. > > > > It already spread - ext3 is using it and I think reiser4. I thought I > > had a patch to rename it to PG_misc1 or somesuch, but no. It's mandate > > becomes "filesystem-specific page flag". > > You're carrying a patch to stick a flag called PG_fs_misc, but that has the > same value as PG_checked. An extra page flag beyond PG_uptodate, PG_lock > and PG_writeback is required to make readpage through the cache > non-synchronous. David, Interesting, have you got a pointer to a full explanation? Is this about aio? Regards, Daniel