On 1.4.2016 4:06, js1304@xxxxxxxxx wrote: > From: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> > > There is a system that node's pfn are overlapped like as following. > > -----pfn--------> > N0 N1 N2 N0 N1 N2 > > Therefore, we need to care this overlapping when iterating pfn range. > > There are one place in page_owner.c that iterates pfn range and > it doesn't consider this overlapping. Add it. > > Without this patch, above system could over count early allocated > page number before page_owner is activated. > > Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx> Acked-by: Vlastimil Babka <vbabka@xxxxxxx> > --- > mm/page_owner.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/mm/page_owner.c b/mm/page_owner.c > index ac3d8d1..438768c 100644 > --- a/mm/page_owner.c > +++ b/mm/page_owner.c > @@ -301,6 +301,9 @@ static void init_pages_in_zone(pg_data_t *pgdat, struct zone *zone) > > page = pfn_to_page(pfn); > > + if (page_zone(page) != zone) > + continue; > + > /* > * We are safe to check buddy flag and order, because > * this is init stage and only single thread runs. > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>