Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758092AbYHEROj (ORCPT ); Tue, 5 Aug 2008 13:14:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760157AbYHEROb (ORCPT ); Tue, 5 Aug 2008 13:14:31 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:54035 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760119AbYHEROa (ORCPT ); Tue, 5 Aug 2008 13:14:30 -0400 Message-ID: <489888FB.9060401@linux-foundation.org> Date: Tue, 05 Aug 2008 12:08:11 -0500 From: Christoph Lameter User-Agent: Thunderbird 2.0.0.16 (Windows/20080708) MIME-Version: 1.0 To: Mel Gorman CC: Yasunori Goto , Badari Pulavarty , Andrew Morton , linux-mm , Linux Kernel ML Subject: Re: [RFC:Patch: 000/008](memory hotplug) rough idea of pgdat removing References: <20080802090335.D6C8.E1E9C6FF@jp.fujitsu.com> <4897032E.5020601@linux-foundation.org> <20080805150434.BF32.E1E9C6FF@jp.fujitsu.com> <20080805111450.GE20243@csn.ul.ie> In-Reply-To: <20080805111450.GE20243@csn.ul.ie> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 530 Lines: 13 Mel Gorman wrote: > Maybe I am missing something, but what is wrong with stop_machine during > memory hot-remove? Reclaim can sleep while going down a zonelist. There would need to be some form of synchronization to avoid removing a zone from the zonelist that we are just scanning. -- 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/