diff --git a/include/linux/mm.h b/include/linux/mm.h
index 5e2c8af..335288bf 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -744,6 +744,8 @@
 struct page *vm_normal_page(struct vm_area_struct *vma, unsigned long addr,
 		pte_t pte);
 
+int zap_vma_ptes(struct vm_area_struct *vma, unsigned long address,
+		unsigned long size);
 unsigned long zap_page_range(struct vm_area_struct *vma, unsigned long address,
 		unsigned long size, struct zap_details *);
 unsigned long unmap_vmas(struct mmu_gather **tlb,