Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751095AbWCaG2j (ORCPT ); Fri, 31 Mar 2006 01:28:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751092AbWCaG2j (ORCPT ); Fri, 31 Mar 2006 01:28:39 -0500 Received: from anubis.pendulus.net ([38.119.36.60]:58300 "EHLO anubis.pendulus.net") by vger.kernel.org with ESMTP id S1751095AbWCaG2j (ORCPT ); Fri, 31 Mar 2006 01:28:39 -0500 From: Matt Heler Reply-To: lkml@lpbproductions.com To: "Vishal Patil" Subject: Re: CSCAN I/O scheduler for 2.6.10 kernel Date: Fri, 31 Mar 2006 01:28:36 -0500 User-Agent: KMail/1.9.1 Cc: linux-kernel@vger.kernel.org References: <4745278c0603301955w26fea42eid6bcab91c573eaa3@mail.gmail.com> <4745278c0603301958o4c2ed282x3513fdb459d8ec7c@mail.gmail.com> In-Reply-To: <4745278c0603301958o4c2ed282x3513fdb459d8ec7c@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-6" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200603310128.36991.lkml@lpbproductions.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1158 Lines: 28 Any chance you can diff this against the latest 2.6 kernel ? 2.6.10 is abit old. Thanks On Thursday 30 March 2006 10:58 pm, Vishal Patil wrote: > Maintain two queues which will be sorted in ascending order using Red > Black Trees. When a disk request arrives and if the block number it > refers to is greater than the block number of the current request > being served add (merge) it to the first sorted queue or else add > (merge) it to the second sorted queue. Keep on servicing the requests > from the first request queue until it is empty after which switch over > to the second queue and now reverse the roles of the two queues. > Simple and Sweet. Many thanks for the awesome block I/O layer in the > 2.6 kernel. > > - Vishal > > PS: Please note that I have not subscribed to the LKML. For comments > please reply back to this email. > > -- > Every passing minute is another chance to turn it all around. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/