Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753754Ab3CPJGm (ORCPT ); Sat, 16 Mar 2013 05:06:42 -0400 Received: from mail-vc0-f170.google.com ([209.85.220.170]:63741 "EHLO mail-vc0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751833Ab3CPJGl (ORCPT ); Sat, 16 Mar 2013 05:06:41 -0400 MIME-Version: 1.0 From: Raymond Jennings Date: Sat, 16 Mar 2013 02:06:00 -0700 Message-ID: Subject: block device queues, elevatoring implicit or explicit? To: Linux Kernel Mailing List Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 601 Lines: 13 Are all block devices fundamentally elevators or fifos or what? To be blunt, if a bunch of concurrent processes dump requests on a noop queue, are they serviced fifo or in elevator order or what? My goal is to get a dumb elevator that does nothing but sweep up and down the disk mopping up outstanding requests as the disk heads ooze across the sectors. -- 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/