diff --git a/include/linux/swap.h b/include/linux/swap.h
index 68df9c17fbbb49c213f12cf8a0684071000c63c5..8c66486a8ca80cd4cd7e295c905914712d82b1b2 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -156,7 +156,7 @@ enum {
 	SWP_SCANNING	= (1 << 8),	/* refcount in scan_swap_map */
 };
 
-#define SWAP_CLUSTER_MAX 32
+#define SWAP_CLUSTER_MAX 32UL
 #define COMPACT_CLUSTER_MAX SWAP_CLUSTER_MAX
 
 /*
diff --git a/mm/vmscan.c b/mm/vmscan.c
index ff842d9a7714b1434d27345a0acbde6d4b9a88e1..e4521ba1ddd047998a062ba92a88f9ba76cc113c 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1761,15 +1761,17 @@ static void get_scan_count(struct lruvec *lruvec, struct scan_control *sc,
 out:
 	for_each_evictable_lru(lru) {
 		int file = is_file_lru(lru);
+		unsigned long size;
 		unsigned long scan;
 
-		scan = get_lru_size(lruvec, lru);
+		size = get_lru_size(lruvec, lru);
 		if (sc->priority || noswap || !vmscan_swappiness(sc)) {
-			scan >>= sc->priority;
+			scan = size >> sc->priority;
 			if (!scan && force_scan)
-				scan = SWAP_CLUSTER_MAX;
+				scan = min(size, SWAP_CLUSTER_MAX);
 			scan = div64_u64(scan * fraction[file], denominator);
-		}
+		} else
+			scan = size;
 		nr[lru] = scan;
 	}
 }