Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 2 Feb 2001 09:07:14 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 2 Feb 2001 09:07:05 -0500 Received: from zeus.kernel.org ([209.10.41.242]:20172 "EHLO zeus.kernel.org") by vger.kernel.org with ESMTP id ; Fri, 2 Feb 2001 09:06:55 -0500 Date: Fri, 2 Feb 2001 14:04:40 +0000 From: "Stephen C. Tweedie" To: "Stephen C. Tweedie" , bsuparna@in.ibm.com, linux-kernel@vger.kernel.org, kiobuf-io-devel@lists.sourceforge.net Subject: Re: [Kiobuf-io-devel] RFC: Kernel mechanism: Compound event wait /notify + callback chains Message-ID: <20010202140440.W11607@redhat.com> In-Reply-To: <20010201193221.D11607@redhat.com> <200102012046.VAA16746@ns.caldera.de> <20010201212508.G11607@redhat.com> <20010202125135.A12245@caldera.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2i In-Reply-To: <20010202125135.A12245@caldera.de>; from hch@caldera.de on Fri, Feb 02, 2001 at 12:51:35PM +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Fri, Feb 02, 2001 at 12:51:35PM +0100, Christoph Hellwig wrote: > > > > If I have a page vector with a single offset/length pair, I can build > > a new header with the same vector and modified offset/length to split > > the vector in two without copying it. > > You just say in the higher-level structure ignore from x to y even if > they have an offset in their own vector. Exactly --- and so you end up with something _much_ uglier, because you end up with all sorts of combinations of length/offset fields all over the place. This is _precisely_ the mess I want to avoid. Cheers, Stephen - 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/