diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index cafdcee..b16d636 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -234,6 +234,7 @@
 
 	return 1UL << (hstate->order + PAGE_SHIFT);
 }
+EXPORT_SYMBOL_GPL(vma_kernel_pagesize);
 
 /*
  * Return the page size being used by the MMU to back a VMA. In the majority