diff --git a/include/linux/percpu_counter.h b/include/linux/percpu_counter.h
index 40df86f..e8fa2da 100644
--- a/include/linux/percpu_counter.h
+++ b/include/linux/percpu_counter.h
@@ -32,10 +32,10 @@
 
 void percpu_counter_init(struct percpu_counter *fbc, s64 amount);
 void percpu_counter_destroy(struct percpu_counter *fbc);
-void __percpu_counter_add(struct percpu_counter *fbc, s32 amount, s32 batch);
+void __percpu_counter_add(struct percpu_counter *fbc, s64 amount, s32 batch);
 s64 percpu_counter_sum(struct percpu_counter *fbc);
 
-static inline void percpu_counter_add(struct percpu_counter *fbc, s32 amount)
+static inline void percpu_counter_add(struct percpu_counter *fbc, s64 amount)
 {
 	__percpu_counter_add(fbc, amount, FBC_BATCH);
 }
@@ -79,7 +79,7 @@
 	percpu_counter_add(fbc, amount)
 
 static inline void
-percpu_counter_add(struct percpu_counter *fbc, s32 amount)
+percpu_counter_add(struct percpu_counter *fbc, s64 amount)
 {
 	preempt_disable();
 	fbc->count += amount;
diff --git a/lib/percpu_counter.c b/lib/percpu_counter.c
index f736d67..f7ac68c 100644
--- a/lib/percpu_counter.c
+++ b/lib/percpu_counter.c
@@ -14,9 +14,9 @@
 static DEFINE_MUTEX(percpu_counters_lock);
 #endif
 
-void __percpu_counter_add(struct percpu_counter *fbc, s32 amount, s32 batch)
+void __percpu_counter_add(struct percpu_counter *fbc, s64 amount, s32 batch)
 {
-	long count;
+	s64 count;
 	s32 *pcount;
 	int cpu = get_cpu();