From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f180.google.com (mail-wi0-f180.google.com [209.85.212.180]) by kanga.kvack.org (Postfix) with ESMTP id DB4A56B0036 for ; Fri, 18 Jul 2014 04:14:37 -0400 (EDT) Received: by mail-wi0-f180.google.com with SMTP id n3so401711wiv.7 for ; Fri, 18 Jul 2014 01:14:37 -0700 (PDT) Received: from szxga02-in.huawei.com (szxga02-in.huawei.com. [119.145.14.65]) by mx.google.com with ESMTPS id cb12si1929651wib.106.2014.07.18.01.14.35 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Fri, 18 Jul 2014 01:14:36 -0700 (PDT) From: Wang Nan Subject: [PATCH 2/5] memory-hotplug: x86_32: suitable memory should go to ZONE_MOVABLE Date: Fri, 18 Jul 2014 15:56:00 +0800 Message-ID: <1405670163-53747-3-git-send-email-wangnan0@huawei.com> In-Reply-To: <1405670163-53747-1-git-send-email-wangnan0@huawei.com> References: <1405670163-53747-1-git-send-email-wangnan0@huawei.com> MIME-Version: 1.0 Content-Type: text/plain Sender: owner-linux-mm@kvack.org List-ID: To: Ingo Molnar , Yinghai Lu , Mel Gorman , Andrew Morton Cc: Pei Feiyue , linux-mm@kvack.org, x86@kernel.org, linux-ia64@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org This patch add new memory to ZONE_MOVABLE if movable zone is setup and lower than newly added memory for x86_32. Signed-off-by: Wang Nan --- arch/x86/mm/init_32.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index e395048..dd69833 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -826,9 +826,15 @@ int arch_add_memory(int nid, u64 start, u64 size) { struct pglist_data *pgdata = NODE_DATA(nid); struct zone *zone = pgdata->node_zones + ZONE_HIGHMEM; + struct zone *movable_zone = pgdat->node_zones + ZONE_MOVABLE; unsigned long start_pfn = start >> PAGE_SHIFT; unsigned long nr_pages = size >> PAGE_SHIFT; + if (!zone_is_empty(movable_zone)) + if (zone_spans_pfn(movable_zone, start_pfn) || + (zone_end_pfn(movable_zone) <= start_pfn)) + zone = movable_zone; + return __add_pages(nid, zone, start_pfn, nr_pages); } -- 1.8.4 -- 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