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@xxxxxxxxxx>
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@xxxxxxxxxx
Signed-off-by: zhong jiang <zhongjiang@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxxxx 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
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