if rmqueue_bulk fails, we might get page with wrong migratetype,
shouldn't we consider the case?
Thanks,
Shaohua
Index: linux/mm/page_alloc.c
===================================================================
--- linux.orig/mm/page_alloc.c 2007-12-14 16:44:35.000000000 +0800
+++ linux/mm/page_alloc.c 2007-12-14 16:45:42.000000000 +0800
@@ -1067,8 +1067,12 @@ again:
/* Allocate more to the pcp list if necessary */
if (unlikely(&page->lru == &pcp->list)) {
- pcp->count += rmqueue_bulk(zone, 0,
+ int cn;
+ cn = rmqueue_bulk(zone, 0,
pcp->batch, &pcp->list, migratetype);
+ if (unlikely(!cn))
+ goto failed;
+ pcp->count += cn;
page = list_entry(pcp->list.next, struct page, lru);
}
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