---

yaml
---
r: 154295
b: refs/heads/master
c: bd453cd
h: refs/heads/master
i:
  154293: b999a04
  154291: 27c2d8c
  154287: 8744cac
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d0725992c8a6fb63a16bc9e8b2a50094cc4db3cd
+refs/heads/master: bd453cd487ac7116a269517779b83c1061debbec

trunk/mm/page_alloc.c

@@ -1153,10 +1153,10 @@ struct page *buffered_rmqueue(struct zone *preferred_zone,
 			 * properly detect and handle allocation failures.
 			 *
 			 * We most definitely don't want callers attempting to
-			 * allocate greater than single-page units with
+			 * allocate greater than order-1 page units with
 			 * __GFP_NOFAIL.
 			 */
-			WARN_ON_ONCE(order > 0);
+			WARN_ON_ONCE(order > 1);
 		}
 		spin_lock_irqsave(&zone->lock, flags);
 		page = __rmqueue(zone, order, migratetype);

trunk/mm/slub.c

@@ -1085,11 +1085,17 @@ static struct page *allocate_slab(struct kmem_cache *s, gfp_t flags, int node)
 {
 	struct page *page;
 	struct kmem_cache_order_objects oo = s->oo;
+	gfp_t alloc_gfp;
 
 	flags |= s->allocflags;
 
-	page = alloc_slab_page(flags | __GFP_NOWARN | __GFP_NORETRY, node,
-									oo);
+	/*
+	 * Let the initial higher-order allocation fail under memory pressure
+	 * so we fall-back to the minimum order allocation.
+	 */
+	alloc_gfp = (flags | __GFP_NOWARN | __GFP_NORETRY) & ~__GFP_NOFAIL;
+
+	page = alloc_slab_page(alloc_gfp, node, oo);
 	if (unlikely(!page)) {
 		oo = s->min;
 		/*