From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750763AbXCNIhM (ORCPT ); Wed, 14 Mar 2007 04:37:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751375AbXCNIhM (ORCPT ); Wed, 14 Mar 2007 04:37:12 -0400 Received: from fizeau.zen.co.uk ([212.23.8.67]:57497 "EHLO fizeau.zen.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750763AbXCNIhL (ORCPT ); Wed, 14 Mar 2007 04:37:11 -0400 Message-ID: <45F7B3BB.1030404@gmail.com> Date: Wed, 14 Mar 2007 08:35:07 +0000 From: Matt Keenan User-Agent: Icedove 1.5.0.10 (X11/20070307) MIME-Version: 1.0 To: LKML Subject: Re: copy_one_pte() References: <45F6F84D.20302@free.fr> <20070313191844.GA4206@infradead.org> In-Reply-To: <20070313191844.GA4206@infradead.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Originating-Rutherford-IP: [82.69.27.224] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org 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. Matt