diff --git a/include/linux/mm.h b/include/linux/mm.h
index e4397f6..aa8ae83 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -508,6 +508,9 @@
 #ifdef CONFIG_HUGETLB_PAGE
 	HUGETLB_PAGE_DTOR,
 #endif
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+	TRANSHUGE_PAGE_DTOR,
+#endif
 	NR_COMPOUND_DTORS,
 };
 extern compound_page_dtor * const compound_page_dtors[];
@@ -537,6 +540,8 @@
 	page[1].compound_order = order;
 }
 
+void free_compound_page(struct page *page);
+
 #ifdef CONFIG_MMU
 /*
  * Do pte_mkwrite, but only if the vma says VM_WRITE.  We do this when