From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx160.postini.com [74.125.245.160]) by kanga.kvack.org (Postfix) with SMTP id 2E17E6B0044 for ; Thu, 8 Nov 2012 04:00:10 -0500 (EST) Message-ID: <509B75FF.6070806@cn.fujitsu.com> Date: Thu, 08 Nov 2012 17:06:07 +0800 From: Wen Congyang MIME-Version: 1.0 Subject: [PATCH v2] memory-hotplug: fix NR_FREE_PAGES mismatch's fix Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=ISO-8859-1 Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org, lkml Cc: Jiang Liu , Len Brown , Andrew Morton , KOSAKI Motohiro , Yasuaki ISIMATU , "Rafael J. Wysocki" , lai jiangshan , Wen congyang When a page is freed and put into pcp list, get_freepage_migratetype() doesn't return MIGRATE_ISOLATE even if this pageblock is isolated. So we should use get_freepage_migratetype() instead of mt to check whether it is isolated. --- mm/page_alloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 027afd0..795875f 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -667,7 +667,7 @@ static void free_pcppages_bulk(struct zone *zone, int count, /* MIGRATE_MOVABLE list may include MIGRATE_RESERVEs */ __free_one_page(page, zone, 0, mt); trace_mm_page_pcpu_drain(page, 0, mt); - if (likely(mt != MIGRATE_ISOLATE)) { + if (likely(get_pageblock_migratetype(page) != MIGRATE_ISOLATE)) { __mod_zone_page_state(zone, NR_FREE_PAGES, 1); if (is_migrate_cma(mt)) __mod_zone_page_state(zone, NR_FREE_CMA_PAGES, 1); -- 1.8.0 -- 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