diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 4b7ee83..132b260 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -65,9 +65,10 @@
 					  unsigned long flags, int node,
 					  gfp_t gfp_mask);
 extern struct vm_struct *remove_vm_area(void *addr);
+
 extern int map_vm_area(struct vm_struct *area, pgprot_t prot,
 			struct page ***pages);
-extern void unmap_vm_area(struct vm_struct *area);
+extern void unmap_kernel_range(unsigned long addr, unsigned long size);
 
 /*
  *	Internals.  Dont't use..