From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751108AbXCOTGl (ORCPT ); Thu, 15 Mar 2007 15:06:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751998AbXCOTGl (ORCPT ); Thu, 15 Mar 2007 15:06:41 -0400 Received: from smtp.osdl.org ([65.172.181.24]:36613 "EHLO smtp.osdl.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751108AbXCOTGk (ORCPT ); Thu, 15 Mar 2007 15:06:40 -0400 Date: Thu, 15 Mar 2007 11:06:34 -0800 From: Andrew Morton To: Matt Keenan Cc: linux-kernel@vger.kernel.org, Christoph Hellwig Subject: Re: copy_one_pte() Message-Id: <20070315110634.a2d08dce.akpm@linux-foundation.org> In-Reply-To: <45F7B3BB.1030404@gmail.com> References: <45F6F84D.20302@free.fr> <20070313191844.GA4206@infradead.org> <45F7B3BB.1030404@gmail.com> X-Mailer: Sylpheed version 2.2.7 (GTK+ 2.8.17; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org (cc restored. Please always do reply-to-all). > On Wed, 14 Mar 2007 08:35:07 +0000 Matt Keenan wrote: > Christoph Hellwig wrote: > > On Tue, Mar 13, 2007 at 08:15:25PM +0100, Zoltan Menyhart wrote: > > > >> I had a look at copy_one_pte(). > >> I cannot see any ioproc_update_page() call, not even for the COW pages. > >> Is it intentional? > >> > > > > There is no such thing as ioproc_update_page in any mainline tree. > > You must be looking at some vendor tree with braindead patches applied. > > > > > It looks like this function exists as a part of patches to support > Quadrics NICs / RDMA (HPC platforms). The patches are there so the > driver doesn't need to pin pages, it can be informed of page updates > directly. A patch was submitted to l-k sometime in 2005. Oh Dear. Which vendor's kernel are we talking about here?