diff --git a/include/linux/log2.h b/include/linux/log2.h
index 389043a..d9913f0 100644
--- a/include/linux/log2.h
+++ b/include/linux/log2.h
@@ -54,6 +54,15 @@
 	return (n != 0 && ((n & (n - 1)) == 0));
 }
 
+/*
+ * round up to nearest power of two
+ */
+static inline __attribute__((const))
+unsigned long __roundup_pow_of_two(unsigned long n)
+{
+	return 1UL << fls(n - 1);
+}
+
 /**
  * ilog2 - log of base 2 of 32-bit or a 64-bit unsigned value
  * @n - parameter