diff --git a/[refs] b/[refs]
index 7a5888fcc7b9..249e93ef14d8 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 41e5a6ac80c600e1f8bda0a4871f0b797e097d78
+refs/heads/master: e6333fd4ddf7a583480017f535b9ea53c116ab81
diff --git a/trunk/include/linux/swap.h b/trunk/include/linux/swap.h
index 5b1fdf1cff4f..f03c24719302 100644
--- a/trunk/include/linux/swap.h
+++ b/trunk/include/linux/swap.h
@@ -296,7 +296,7 @@ static inline void disable_swap_token(void)
 #define read_swap_cache_async(swp,vma,addr)	NULL
 #define lookup_swap_cache(swp)			NULL
 #define valid_swaphandles(swp, off)		0
-#define can_share_swap_page(p)			0
+#define can_share_swap_page(p)			(page_mapcount(p) == 1)
 #define move_to_swap_cache(p, swp)		1
 #define move_from_swap_cache(p, i, m)		1
 #define __delete_from_swap_cache(p)		/*NOTHING*/