diff options
| -rw-r--r-- | mm/page_alloc.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 370b64d03e3f..7ca668e946e5 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2350,16 +2350,16 @@ static int rmqueue_bulk(struct zone *zone, unsigned int order, continue; /* - * Split buddy pages returned by expand() are received here - * in physical page order. The page is added to the callers and - * list and the list head then moves forward. From the callers - * perspective, the linked list is ordered by page number in - * some conditions. This is useful for IO devices that can - * merge IO requests if the physical pages are ordered - * properly. + * Split buddy pages returned by expand() are received here in + * physical page order. The page is added to the tail of + * caller's list. From the callers perspective, the linked list + * is ordered by page number under some conditions. This is + * useful for IO devices that can forward direction from the + * head, thus also in the physical page order. This is useful + * for IO devices that can merge IO requests if the physical + * pages are ordered properly. */ - list_add(&page->lru, list); - list = &page->lru; + list_add_tail(&page->lru, list); alloced++; if (is_migrate_cma(get_pcppage_migratetype(page))) __mod_zone_page_state(zone, NR_FREE_CMA_PAGES, |