Allow lower order buddy pages in suitable_migration_target() so isolate_freepages() can isolate them as free pages during compaction_alloc() phase. Cc: Mel Gorman <mgorman@xxxxxxx> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx> Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx> --- mm/compaction.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/compaction.c b/mm/compaction.c index bc77135..642c17a 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -115,8 +115,8 @@ static bool suitable_migration_target(struct page *page) if (migratetype == MIGRATE_ISOLATE || migratetype == MIGRATE_RESERVE) return false; - /* If the page is a large free page, then allow migration */ - if (PageBuddy(page) && page_order(page) >= pageblock_order) + /* If the page is a free page, then allow migration */ + if (PageBuddy(page)) return true; /* If the block is MIGRATE_MOVABLE, allow migration */ -- 1.7.9.4 -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>