diff --git a/include/linux/math64.h b/include/linux/math64.h
index 837f2f2d1d341ff56549d6b134149e1e92a49a69..bb2c84afb80c6c2246d233f7acab29c33bdb372e 100644
--- a/include/linux/math64.h
+++ b/include/linux/math64.h
@@ -281,4 +281,7 @@ static inline u64 mul_u64_u32_div(u64 a, u32 mul, u32 divisor)
 }
 #endif /* mul_u64_u32_div */
 
+#define DIV64_U64_ROUND_UP(ll, d)	\
+	({ u64 _tmp = (d); div64_u64((ll) + _tmp - 1, _tmp); })
+
 #endif /* _LINUX_MATH64_H */
diff --git a/mm/vmscan.c b/mm/vmscan.c
index c5ef7240cbcbba05b4ef759b3c05d1ffdb163369..961401c46334cf815b1d92d7755314577aabd3e2 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2456,9 +2456,11 @@ static void get_scan_count(struct lruvec *lruvec, struct mem_cgroup *memcg,
 			/*
 			 * Scan types proportional to swappiness and
 			 * their relative recent reclaim efficiency.
+			 * Make sure we don't miss the last page
+			 * because of a round-off error.
 			 */
-			scan = div64_u64(scan * fraction[file],
-					 denominator);
+			scan = DIV64_U64_ROUND_UP(scan * fraction[file],
+						  denominator);
 			break;
 		case SCAN_FILE:
 		case SCAN_ANON: