From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 23 Apr 2007 08:48:23 -0700 (PDT) From: Christoph Lameter Subject: Re: [PATCH 10/10] mm: per device dirty threshold In-Reply-To: <1177157708.2934.100.camel@lappy> Message-ID: References: <20070420155154.898600123@chello.nl> <20070420155503.608300342@chello.nl> <20070421025532.916b1e2e.akpm@linux-foundation.org> <1177156902.2934.96.camel@lappy> <1177157708.2934.100.camel@lappy> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Peter Zijlstra Cc: Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, miklos@szeredi.hu, neilb@suse.de, dgc@sgi.com, tomoki.sekiyama.qu@hitachi.com, nikita@clusterfs.com, trond.myklebust@fys.uio.no, yingchao.zhou@gmail.com List-ID: On Sat, 21 Apr 2007, Peter Zijlstra wrote: > > > This is enormously wrong for CONFIG_NR_CPUS=1024 on a 2-way. > > Right, I knew about that but, uhm. > > I wanted to make that num_online_cpus(), and install a hotplug notifier > to fold the percpu delta back into the total on cpu offline. Use nr_cpu_ids instead. Contains the maximum possible cpus on this hardware and allows to handle the hotplug case easily. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org