From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lai Jiangshan Subject: [RFC PATCH 14/23 V2] slub, hotplug: ignore unrelated node's hot-adding and hot-removing Date: Thu, 2 Aug 2012 10:53:02 +0800 Message-ID: <1343875991-7533-15-git-send-email-laijs@cn.fujitsu.com> References: <1343875991-7533-1-git-send-email-laijs@cn.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1343875991-7533-1-git-send-email-laijs-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: containers-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Mel Gorman Cc: Christoph Lameter , Jiri Kosina , Dan Magenheimer , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Michal Hocko , Paul Gortmaker , Konstantin Khlebnikov , "H. Peter Anvin" , Sam Ravnborg , Gavin Shan , Rik van Riel , cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, Hugh Dickins , Ingo Molnar , Mel Gorman , KOSAKI Motohiro , David Rientjes , Petr Holasek , linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org, Wanlong Gao , Djalal Harouni , Rusty Russell , Wen Congyang , Peter Zijlstra List-Id: linux-mm.kvack.org 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