diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 11308f0..65fc4dc 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1403,7 +1403,15 @@
 						-1, GFP_KERNEL, caller);
 }
 
-static struct vm_struct *find_vm_area(const void *addr)
+/**
+ *	find_vm_area  -  find a continuous kernel virtual area
+ *	@addr:		base address
+ *
+ *	Search for the kernel VM area starting at @addr, and return it.
+ *	It is up to the caller to do all required locking to keep the returned
+ *	pointer valid.
+ */
+struct vm_struct *find_vm_area(const void *addr)
 {
 	struct vmap_area *va;