+ mm-page_owner-align-with-pageblock_nr_pages.patch added to -mm tree

+ mm-page_owner-align-with-pageblock_nr_pages.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm/page_owner: align with pageblock_nr_pages
has been added to the -mm tree.  Its filename is
     mm-page_owner-align-with-pageblock_nr_pages.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/mm-page_owner-align-with-pageblock_nr_pages.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/mm-page_owner-align-with-pageblock_nr_pages.patch

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------------------------------------------------------
From: zhong jiang <zhongjiang@huawei.com>
Subject: mm/page_owner: align with pageblock_nr_pages

Currently, init_pages_in_zone() walks the zone in pageblock_nr_pages
steps.  MAX_ORDER_NR_PAGES is possible to have holes when
CONFIG_HOLES_IN_ZONE is set.  it is likely to be different between
MAX_ORDER_NR_PAGES and pageblock_nr_pages.  if we skip the size of
MAX_ORDER_NR_PAGES, it will result in the second 2M memroy leak.

Meanwhile, the change will make the code consistent.  because the entire
function is based on the pageblock_nr_pages steps.

Link: http://lkml.kernel.org/r/1512395284-13588-1-git-send-email-zhongjiang@huawei.com
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/page_owner.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN mm/page_owner.c~mm-page_owner-align-with-pageblock_nr_pages mm/page_owner.c
--- a/mm/page_owner.c~mm-page_owner-align-with-pageblock_nr_pages
+++ a/mm/page_owner.c
@@ -544,7 +544,7 @@ static void init_pages_in_zone(pg_data_t
 	 */
 	for (; pfn < end_pfn; ) {
 		if (!pfn_valid(pfn)) {
-			pfn = ALIGN(pfn + 1, MAX_ORDER_NR_PAGES);
+			pfn = ALIGN(pfn + 1, pageblock_nr_pages);
 			continue;
 		}
 
_

Patches currently in -mm which might be from zhongjiang@huawei.com are

mm-page_owner-align-with-pageblock_nr_pages.patch
mm-page_owner-align-with-pageblock_nr-pages.patch
mm-walk-the-zone-in-pageblock_nr_pages-steps.patch