From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f52.google.com (mail-pa0-f52.google.com [209.85.220.52]) by kanga.kvack.org (Postfix) with ESMTP id CD1F98292A for ; Thu, 12 Feb 2015 02:30:34 -0500 (EST) Received: by mail-pa0-f52.google.com with SMTP id ey11so9569101pad.11 for ; Wed, 11 Feb 2015 23:30:34 -0800 (PST) Received: from lgemrelse7q.lge.com (LGEMRELSE7Q.lge.com. [156.147.1.151]) by mx.google.com with ESMTP id fi4si3860038pbc.179.2015.02.11.23.30.14 for ; Wed, 11 Feb 2015 23:30:15 -0800 (PST) From: Joonsoo Kim Subject: [RFC 03/16] mm/highmem: make nr_free_highpages() handles all highmem zones by itself Date: Thu, 12 Feb 2015 16:32:07 +0900 Message-Id: <1423726340-4084-4-git-send-email-iamjoonsoo.kim@lge.com> In-Reply-To: <1423726340-4084-1-git-send-email-iamjoonsoo.kim@lge.com> References: <1423726340-4084-1-git-send-email-iamjoonsoo.kim@lge.com> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: Rik van Riel , Johannes Weiner , Mel Gorman , Laura Abbott , Minchan Kim , Heesub Shin , Marek Szyprowski , Michal Nazarewicz , "Aneesh Kumar K.V" , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Hui Zhu , Gioh Kim , Bartlomiej Zolnierkiewicz , Ritesh Harjani , Vlastimil Babka , Joonsoo Kim nr_free_highpages() manually add statistics per each highmem zone and return total value for them. Whenever we add a new highmem zone, we need to consider this function and it's really troublesome. Make it handles all highmem zones by itself. Signed-off-by: Joonsoo Kim --- mm/highmem.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/mm/highmem.c b/mm/highmem.c index 123bcd3..50b4ca6 100644 --- a/mm/highmem.c +++ b/mm/highmem.c @@ -112,16 +112,12 @@ EXPORT_PER_CPU_SYMBOL(__kmap_atomic_idx); unsigned int nr_free_highpages (void) { - pg_data_t *pgdat; + struct zone *zone; unsigned int pages = 0; - for_each_online_pgdat(pgdat) { - pages += zone_page_state(&pgdat->node_zones[ZONE_HIGHMEM], - NR_FREE_PAGES); - if (zone_movable_is_highmem()) - pages += zone_page_state( - &pgdat->node_zones[ZONE_MOVABLE], - NR_FREE_PAGES); + for_each_populated_zone(zone) { + if (is_highmem(zone)) + pages += zone_page_state(zone, NR_FREE_PAGES); } return pages; -- 1.7.9.5 -- 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