From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754535AbYEORyP (ORCPT ); Thu, 15 May 2008 13:54:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752114AbYEORyA (ORCPT ); Thu, 15 May 2008 13:54:00 -0400 Received: from webhosting.zipcon.net ([209.221.136.93]:60227 "EHLO webhosting.zipcon.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752011AbYEORx7 (ORCPT ); Thu, 15 May 2008 13:53:59 -0400 X-Greylist: delayed 3763 seconds by postgrey-1.27 at vger.kernel.org; Thu, 15 May 2008 13:53:59 EDT Message-ID: <482C6A02.2030600@beezmo.com> Date: Thu, 15 May 2008 09:51:14 -0700 From: William D Waddington User-Agent: Thunderbird 2.0.0.14 (Windows/20080421) MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: [RFCLUE4] scatterlist changes Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - webhosting.zipcon.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - beezmo.com X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, I have just tripped over the scatterlist changes in my out-of-tree drivers. I'll deal with it. When the API stabilizes... It does bring to mind a simple question: why limit the scatterlist to a single page, or require a multiple-page list to be dealt with as individual pages? Is this just to avoid vmalloc use? I don't see anything that requires a scatterlist to be in physically contiguous memory (at a quick glance anyway) other than perhaps a preference for the initial allocation mechanism. (My actual IOPB list for the DMA hardware is a different matter entirely, but I don't _think_ I'm confusing the two). Thanks, Bill -- -------------------------------------------- William D Waddington Bainbridge Island, WA, USA william.waddington@beezmo.com -------------------------------------------- "Even bugs...are unexpected signposts on the long road of creativity..." - Ken Burtch