diff --git a/include/linux/swap.h b/include/linux/swap.h
index 0cedf31..dca9b99 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -423,12 +423,6 @@
 #define has_swap_token(x) 0
 #define disable_swap_token() do { } while(0)
 
-static inline int mem_cgroup_cache_charge_swapin(struct page *page,
-			struct mm_struct *mm, gfp_t mask, bool locked)
-{
-	return 0;
-}
-
 static inline void
 mem_cgroup_uncharge_swapcache(struct page *page, swp_entry_t ent)
 {