diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 2496879..f7bc869 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -34,6 +34,7 @@
 extern unsigned long max_huge_pages;
 extern unsigned long hugepages_treat_as_movable;
 extern int hugetlb_dynamic_pool;
+extern unsigned long nr_overcommit_huge_pages;
 extern const unsigned long hugetlb_zero, hugetlb_infinity;
 extern int sysctl_hugetlb_shm_group;