diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 29c3478d1bf3..fe7b69a970aa 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1504,6 +1504,10 @@ static void add_hugetlb_page(struct hstate *h, struct page *page,
 
 	set_compound_page_dtor(page, HUGETLB_PAGE_DTOR);
 	set_page_private(page, 0);
+	/*
+	 * We have to set HPageVmemmapOptimized again as above
+	 * set_page_private(page, 0) cleared it.
+	 */
 	SetHPageVmemmapOptimized(page);
 
 	/*