Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754540AbYKJOfj (ORCPT ); Mon, 10 Nov 2008 09:35:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752778AbYKJOfb (ORCPT ); Mon, 10 Nov 2008 09:35:31 -0500 Received: from mx2.redhat.com ([66.187.237.31]:46674 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752763AbYKJOfa (ORCPT ); Mon, 10 Nov 2008 09:35:30 -0500 Date: Mon, 10 Nov 2008 14:35:22 +0000 From: Alasdair G Kergon To: Peter Zijlstra Cc: Mikulas Patocka , Christoph Hellwig , Chandra Seetharaman , dm-devel , linux-kernel@vger.kernel.org, axboe@kernel.dk Subject: Re: Queue upcall locking (was: [dm-devel] [RFC][PATCH] fix dm_any_congested() to properly sync up with suspend code path) Message-ID: <20081110143522.GE16649@agk.fab.redhat.com> Mail-Followup-To: Peter Zijlstra , Mikulas Patocka , Christoph Hellwig , Chandra Seetharaman , dm-devel , linux-kernel@vger.kernel.org, axboe@kernel.dk References: <1225944008.14830.1101.camel@chandra-ubuntu> <20081110135401.GA11606@infradead.org> <1226327210.7685.173.camel@twins> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1226327210.7685.173.camel@twins> User-Agent: Mutt/1.4.1i Organization: Red Hat UK Ltd. Registered in England and Wales, number 03798903. Registered Office: Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE. Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 683 Lines: 16 On Mon, Nov 10, 2008 at 03:26:50PM +0100, Peter Zijlstra wrote: > Fix the infrastructure by adding a function call so that you can have > the individual devices report their congestion state to the aggregate. Which requires knowing/accessing some device hierarchy, which would be nice for other things too (like propagation of notification of changes to device properties such as size, hardsect size etc.). Alasdair -- agk@redhat.com -- 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/