diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 114c56c3685d9f7bf24d9127355c6821cd64d321..d98441ab103605f45898132eb4069605d91aa2a8 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3224,6 +3224,7 @@ int __isolate_free_page(struct page *page, unsigned int order)
  * __putback_isolated_page - Return a now-isolated page back where we got it
  * @page: Page that was isolated
  * @order: Order of the isolated page
+ * @mt: The page's pageblock's migratetype
  *
  * This function is meant to return a page pulled from the free lists via
  * __isolate_free_page back to the free lists they were pulled from.