From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 15 Aug 2001 05:39:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 15 Aug 2001 05:39:19 -0400 Received: from fe010.worldonline.dk ([212.54.64.195]:16651 "HELO fe010.worldonline.dk") by vger.kernel.org with SMTP id ; Wed, 15 Aug 2001 05:39:06 -0400 Date: Wed, 15 Aug 2001 11:17:48 +0200 From: Jens Axboe To: "David S. Miller" Cc: linux-kernel@vger.kernel.org Subject: Re: [patch] zero-bounce highmem I/O Message-ID: <20010815111748.E545@suse.de> In-Reply-To: <20010815095018.B545@suse.de> <20010815.021133.71088933.davem@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20010815.021133.71088933.davem@redhat.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Aug 15 2001, David S. Miller wrote: > From: Jens Axboe > Date: Wed, 15 Aug 2001 09:50:18 +0200 > > Dave, comments on that? > > I think the new-style sg_list is slightly overkill, too much > stuff. You need much less, in fact, especially on x86. > > Take include/linux/skbuff.h:skb_frag_struct, rename it to > sg_list and add a dma_addr_t. You should need nothing else. > The bounce page, for example, is superfluous. Ok agreed, fine with me. > If you bounce, the bounce page can be determined later via the > dma_addr_t right? That's true. > And Dave, should I add the 64-bit stuff I started again? :-) > > Let me draft something up, and meanwhile you can think about > the changes I suggest above. Ok? Ok done from my side :) -- Jens Axboe