diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 993f7c1..59a0059 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -671,6 +671,11 @@
 	}
 }
 
+/*
+ * PageHuge() only returns true for hugetlbfs pages, but not for normal or
+ * transparent huge pages.  See the PageTransHuge() documentation for more
+ * details.
+ */
 int PageHuge(struct page *page)
 {
 	compound_page_dtor *dtor;