diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 132b260..c2b10ca 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -70,6 +70,10 @@
 			struct page ***pages);
 extern void unmap_kernel_range(unsigned long addr, unsigned long size);
 
+/* Allocate/destroy a 'vmalloc' VM area. */
+extern struct vm_struct *alloc_vm_area(size_t size);
+extern void free_vm_area(struct vm_struct *area);
+
 /*
  *	Internals.  Dont't use..
  */