diff --git a/mm/swap.c b/mm/swap.c
index 2881987603ebd880fa6410553c2bef83b7a99d50..b135ec90cdeb92673e2e97389f7cf9afc3ae80c9 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -299,7 +299,6 @@ void lru_add_drain(void)
 	put_cpu();
 }
 
-#if defined(CONFIG_NUMA) || defined(CONFIG_UNEVICTABLE_LRU)
 static void lru_add_drain_per_cpu(struct work_struct *dummy)
 {
 	lru_add_drain();
@@ -313,18 +312,6 @@ int lru_add_drain_all(void)
 	return schedule_on_each_cpu(lru_add_drain_per_cpu);
 }
 
-#else
-
-/*
- * Returns 0 for success
- */
-int lru_add_drain_all(void)
-{
-	lru_add_drain();
-	return 0;
-}
-#endif
-
 /*
  * Batched page_cache_release().  Decrement the reference count on all the
  * passed pages.  If it fell to zero then remove the page from the LRU and