diff --git a/include/linux/mm.h b/include/linux/mm.h
index 9670f71..1036614 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -985,6 +985,8 @@
 int get_user_pages_fast(unsigned long start, int nr_pages, int write,
 			struct page **pages);
 struct page *get_dump_page(unsigned long addr);
+extern int fixup_user_fault(struct task_struct *tsk, struct mm_struct *mm,
+			    unsigned long address, unsigned int fault_flags);
 
 extern int try_to_release_page(struct page * page, gfp_t gfp_mask);
 extern void do_invalidatepage(struct page *page, unsigned long offset);