v4.19.13 snapshot.
diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
new file mode 100644
index 0000000..9d0cde8
--- /dev/null
+++ b/include/asm-generic/hugetlb.h
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_GENERIC_HUGETLB_H
+#define _ASM_GENERIC_HUGETLB_H
+
+static inline pte_t mk_huge_pte(struct page *page, pgprot_t pgprot)
+{
+ return mk_pte(page, pgprot);
+}
+
+static inline unsigned long huge_pte_write(pte_t pte)
+{
+ return pte_write(pte);
+}
+
+static inline unsigned long huge_pte_dirty(pte_t pte)
+{
+ return pte_dirty(pte);
+}
+
+static inline pte_t huge_pte_mkwrite(pte_t pte)
+{
+ return pte_mkwrite(pte);
+}
+
+static inline pte_t huge_pte_mkdirty(pte_t pte)
+{
+ return pte_mkdirty(pte);
+}
+
+static inline pte_t huge_pte_modify(pte_t pte, pgprot_t newprot)
+{
+ return pte_modify(pte, newprot);
+}
+
+#ifndef huge_pte_clear
+static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, unsigned long sz)
+{
+ pte_clear(mm, addr, ptep);
+}
+#endif
+
+#endif /* _ASM_GENERIC_HUGETLB_H */