diff --git a/mm/swap_ratio.c b/mm/swap_ratio.c
index c5355545fc4b..bfff30864b6c 100644
--- a/mm/swap_ratio.c
+++ b/mm/swap_ratio.c
@@ -17,8 +17,9 @@
 
 #define SWAP_RATIO_GROUP_START (SWAP_FLAG_PRIO_MASK - 9) /* 32758 */
 #define SWAP_RATIO_GROUP_END (SWAP_FLAG_PRIO_MASK) /* 32767 */
-#define SWAP_FAST_WRITES (SWAPFILE_CLUSTER * (SWAP_CLUSTER_MAX / 8))
-#define SWAP_SLOW_WRITES SWAPFILE_CLUSTER
+#define SWAP_FAST_WRITES	\
+	((SWAPFILE_CLUSTER * (SWAP_CLUSTER_MAX / 8)) / SWAP_BATCH)
+#define SWAP_SLOW_WRITES (SWAPFILE_CLUSTER / SWAP_BATCH)
 
 /*
  * The fast/slow swap write ratio.