From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 19 Jan 2001 05:57:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 19 Jan 2001 05:56:59 -0500 Received: from adsl-63-195-162-81.dsl.snfc21.pacbell.net ([63.195.162.81]:54546 "EHLO master.linux-ide.org") by vger.kernel.org with ESMTP id ; Fri, 19 Jan 2001 05:56:45 -0500 Date: Fri, 19 Jan 2001 02:55:57 -0800 (PST) From: Andre Hedrick To: Roman Zippel cc: Linus Torvalds , Andreas Dilger , Rogier Wolff , linux-kernel@vger.kernel.org Subject: Re: Is sendfile all that sexy? In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 19 Jan 2001, Roman Zippel wrote: > Hi, > > On Thu, 18 Jan 2001, Linus Torvalds wrote: > > > > I agree, it's device dependent, but such hardware exists. > > > > Show me any practical case where the hardware actually exists. > > http://www.augan.com > > > I do not know of _any_ disk controllers that let you map the controller > > buffers over PCI. Which means that with current hardware, you have to > > assume that the disk is the initiator of the PCI-PCI DMA requests. Agreed? Err, first-party DMA devices do this, I think. I do have some of these on the radar map. Andre Hedrick Linux ATA Development - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/