diff --git a/include/linux/res_counter.h b/include/linux/res_counter.h
index 8cb1ecd..df8085a 100644
--- a/include/linux/res_counter.h
+++ b/include/linux/res_counter.h
@@ -25,6 +25,10 @@
 	 */
 	unsigned long long usage;
 	/*
+	 * the maximal value of the usage from the counter creation
+	 */
+	unsigned long long max_usage;
+	/*
 	 * the limit that usage cannot exceed
 	 */
 	unsigned long long limit;
@@ -67,6 +71,7 @@
 
 enum {
 	RES_USAGE,
+	RES_MAX_USAGE,
 	RES_LIMIT,
 	RES_FAILCNT,
 };
@@ -127,4 +132,13 @@
 	return ret;
 }
 
+static inline void res_counter_reset_max(struct res_counter *cnt)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&cnt->lock, flags);
+	cnt->max_usage = cnt->usage;
+	spin_unlock_irqrestore(&cnt->lock, flags);
+}
+
 #endif