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;