Merge branch 'master' into for-next

Merge with latest Linus' tree, as I have incoming patches
that fix code that is newer than current HEAD of for-next.

Conflicts:
	drivers/net/ethernet/realtek/r8169.c

1 files changed, 8 insertions, 6 deletions

diff --git a/mm/swap.c b/mm/swap.c
index b0f529b3897..5c13f133897 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -496,7 +496,7 @@ static void lru_deactivate_fn(struct page *page, void *arg)
  * Either "cpu" is the current CPU, and preemption has already been
  * disabled; or "cpu" is being hot-unplugged, and is already dead.
  */
-static void drain_cpu_pagevecs(int cpu)
+void lru_add_drain_cpu(int cpu)
 {
 	struct pagevec *pvecs = per_cpu(lru_add_pvecs, cpu);
 	struct pagevec *pvec;
@@ -553,7 +553,7 @@ void deactivate_page(struct page *page)
 
 void lru_add_drain(void)
 {
-	drain_cpu_pagevecs(get_cpu());
+	lru_add_drain_cpu(get_cpu());
 	put_cpu();
 }
 
@@ -652,14 +652,14 @@ EXPORT_SYMBOL(__pagevec_release);
 void lru_add_page_tail(struct zone* zone,
 		       struct page *page, struct page *page_tail)
 {
-	int active;
+	int uninitialized_var(active);
 	enum lru_list lru;
 	const int file = 0;
 
 	VM_BUG_ON(!PageHead(page));
 	VM_BUG_ON(PageCompound(page_tail));
 	VM_BUG_ON(PageLRU(page_tail));
-	VM_BUG_ON(!spin_is_locked(&zone->lru_lock));
+	VM_BUG_ON(NR_CPUS != 1 && !spin_is_locked(&zone->lru_lock));
 
 	SetPageLRU(page_tail);
 
@@ -672,7 +672,6 @@ void lru_add_page_tail(struct zone* zone,
 			active = 0;
 			lru = LRU_INACTIVE_ANON;
 		}
-		update_page_reclaim_stat(zone, page_tail, file, active);
 	} else {
 		SetPageUnevictable(page_tail);
 		lru = LRU_UNEVICTABLE;
@@ -693,6 +692,9 @@ void lru_add_page_tail(struct zone* zone,
 		list_head = page_tail->lru.prev;
 		list_move_tail(&page_tail->lru, list_head);
 	}
+
+	if (!PageUnevictable(page))
+		update_page_reclaim_stat(zone, page_tail, file, active);
 }
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */
 
@@ -710,8 +712,8 @@ static void __pagevec_lru_add_fn(struct page *page, void *arg)
 	SetPageLRU(page);
 	if (active)
 		SetPageActive(page);
-	update_page_reclaim_stat(zone, page, file, active);
 	add_page_to_lru_list(zone, page, lru);
+	update_page_reclaim_stat(zone, page, file, active);
 }
 
 /*