Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932069AbXBNANk (ORCPT ); Tue, 13 Feb 2007 19:13:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932071AbXBNANk (ORCPT ); Tue, 13 Feb 2007 19:13:40 -0500 Received: from fgwmail5.fujitsu.co.jp ([192.51.44.35]:41437 "EHLO fgwmail5.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932069AbXBNANj (ORCPT ); Tue, 13 Feb 2007 19:13:39 -0500 Date: Wed, 14 Feb 2007 09:12:06 +0900 From: KAMEZAWA Hiroyuki To: Christoph Lameter Cc: andi@firstfloor.org, linux-kernel@vger.kernel.org, akpm@osdl.org, bob.picco@hp.com Subject: Re: [RFC] [PATCH] more support for memory-less-node. Message-Id: <20070214091206.de21fd6f.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: References: <20070213155736.1131d46a.kamezawa.hiroyu@jp.fujitsu.com> <200702130929.49349.andi@firstfloor.org> <20070213173830.285c3838.kamezawa.hiroyu@jp.fujitsu.com> Organization: Fujitsu X-Mailer: Sylpheed version 2.2.0 (GTK+ 2.6.10; i686-pc-mingw32) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 770 Lines: 24 On Tue, 13 Feb 2007 09:25:00 -0800 (PST) Christoph Lameter wrote: > On Tue, 13 Feb 2007, KAMEZAWA Hiroyuki wrote: > > > NOD_DATA(nid) is always valid pointer if a node is online. > > NODE_DATA(nid)->present_pages can be 0 even if a node is online, > > I call this as memory-less-node. > > Yes but the pgdat will have no valid zone in it. That is new. > we have populated_zone() macro for checking it. (I noticed node-hotplug can create memory-less-zone until memory is onlined by the user.) -Kame - 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/