mm/hugetlb.c: make a function static

return_unused_surplus_pages() can become static.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Adam Litke <agl@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index b52b6dd..abe1e9f 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -328,7 +328,7 @@
  * allocated to satisfy the reservation must be explicitly freed if they were
  * never used.
  */
-void return_unused_surplus_pages(unsigned long unused_resv_pages)
+static void return_unused_surplus_pages(unsigned long unused_resv_pages)
 {
 	static int nid = -1;
 	struct page *page;