diff --git a/[refs] b/[refs]
index 92665b1f2f3f..55e57945f2f7 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3c8f370ded3483b27f1218ff0051fcf0c7a2facd
+refs/heads/master: c84598bbfa756b7d042da31aa4e198ae866a6c7d
diff --git a/trunk/include/linux/percpu_counter.h b/trunk/include/linux/percpu_counter.h
index 46f6ba56fa91..5edc9014263a 100644
--- a/trunk/include/linux/percpu_counter.h
+++ b/trunk/include/linux/percpu_counter.h
@@ -75,7 +75,7 @@ static inline s64 percpu_counter_read_positive(struct percpu_counter *fbc)
 	barrier();		/* Prevent reloads of fbc->count */
 	if (ret >= 0)
 		return ret;
-	return 1;
+	return 0;
 }
 
 static inline int percpu_counter_initialized(struct percpu_counter *fbc)
@@ -133,6 +133,10 @@ static inline s64 percpu_counter_read(struct percpu_counter *fbc)
 	return fbc->count;
 }
 
+/*
+ * percpu_counter is intended to track positive numbers. In the UP case the
+ * number should never be negative.
+ */
 static inline s64 percpu_counter_read_positive(struct percpu_counter *fbc)
 {
 	return fbc->count;