Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753519Ab2HBGBT (ORCPT ); Thu, 2 Aug 2012 02:01:19 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:26224 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1753400Ab2HBGBN (ORCPT ); Thu, 2 Aug 2012 02:01:13 -0400 X-IronPort-AV: E=Sophos;i="4.77,698,1336320000"; d="scan'208";a="5534633" From: Lai Jiangshan To: Mel Gorman , linux-kernel@vger.kernel.org Cc: Lai Jiangshan , Christoph Lameter , Pekka Enberg , Matt Mackall , linux-mm@kvack.org Subject: [RFC PATCH 14/23 V2] slub, hotplug: ignore unrelated node's hot-adding and hot-removing Date: Thu, 2 Aug 2012 14:01:19 +0800 Message-Id: <1343887288-8866-15-git-send-email-laijs@cn.fujitsu.com> X-Mailer: git-send-email 1.7.4.4 In-Reply-To: <1343887288-8866-1-git-send-email-laijs@cn.fujitsu.com> References: <1343887288-8866-1-git-send-email-laijs@cn.fujitsu.com> X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/08/02 14:01:41, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2012/08/02 14:01:42, Serialize complete at 2012/08/02 14:01:42 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1217 Lines: 40 SLUB only fucus on the nodes which has normal memory, so ignore the other node's hot-adding and hot-removing. Signed-off-by: Lai Jiangshan --- mm/slub.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/mm/slub.c b/mm/slub.c index 8c691fa..4c5bdc0 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -3577,6 +3577,9 @@ static void slab_mem_offline_callback(void *arg) if (offline_node < 0) return; + if (page_zonenum(pfn_to_page(marg->start_pfn)) > ZONE_NORMAL) + return; + down_read(&slub_lock); list_for_each_entry(s, &slab_caches, list) { n = get_node(s, offline_node); @@ -3611,6 +3614,9 @@ static int slab_mem_going_online_callback(void *arg) if (nid < 0) return 0; + if (page_zonenum(pfn_to_page(marg->start_pfn)) > ZONE_NORMAL) + return 0; + /* * We are bringing a node online. No memory is available yet. We must * allocate a kmem_cache_node structure in order to bring the node -- 1.7.1 -- 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/