From: zhong jiang <zhongjiang@huawei.com>
Date: Sat, 10 Sep 2016 10:34:16 +0000 (+1000)
Subject: mm/vmstat.c: walk the zone in pageblock_nr_pages steps
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=8ad9c0046afd7c2c66530d44e43322918f2ef98c;p=deliverable%2Flinux.git

mm/vmstat.c: walk the zone in pageblock_nr_pages steps

when walking the zone, we can happens to the holes. we should not
align MAX_ORDER_NR_PAGES, so it can skip the normal memory.

In addition, pagetypeinfo_showmixedcount_print reflect fragmentization.
we hope to get more accurate data. therefore, I decide to fix it.

Link: http://lkml.kernel.org/r/1469502526-24486-2-git-send-email-zhongjiang@huawei.com
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/page_owner.c b/mm/page_owner.c
index 754efdd52bf7..c3cee247f2e6 100644
--- a/mm/page_owner.c
+++ b/mm/page_owner.c
@@ -261,7 +261,7 @@ void pagetypeinfo_showmixedcount_print(struct seq_file *m,
 	 */
 	for (; pfn < end_pfn; ) {
 		if (!pfn_valid(pfn)) {
-			pfn = ALIGN(pfn + 1, MAX_ORDER_NR_PAGES);
+			pfn = ALIGN(pfn + 1, pageblock_nr_pages);
 			continue;
 		}