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-rw-r--r--mm/page_alloc.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 9242d13f4ff..20759803a64 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -783,6 +783,17 @@ static int move_freepages_block(struct zone *zone, struct page *page,
return move_freepages(zone, start_page, end_page, migratetype);
}
+static void change_pageblock_range(struct page *pageblock_page,
+ int start_order, int migratetype)
+{
+ int nr_pageblocks = 1 << (start_order - pageblock_order);
+
+ while (nr_pageblocks--) {
+ set_pageblock_migratetype(pageblock_page, migratetype);
+ pageblock_page += pageblock_nr_pages;
+ }
+}
+
/* Remove an element from the buddy allocator from the fallback list */
static inline struct page *
__rmqueue_fallback(struct zone *zone, int order, int start_migratetype)
@@ -836,8 +847,9 @@ __rmqueue_fallback(struct zone *zone, int order, int start_migratetype)
list_del(&page->lru);
rmv_page_order(page);
- if (current_order == pageblock_order)
- set_pageblock_migratetype(page,
+ /* Take ownership for orders >= pageblock_order */
+ if (current_order >= pageblock_order)
+ change_pageblock_range(page, current_order,
start_migratetype);
expand(zone, page, order, current_order, area, migratetype);