include/linux/migrate.h: add arg names to prototype

It is preferred, and the rest of migrate.h gets it right.

Link: http://lkml.kernel.org/r/1490336009-8024-1-git-send-email-pushkar.iit@gmail.com
Signed-off-by: Pushkar Jambhlekar <pushkar.iit@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index fa76b51..48e2484 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -33,8 +33,9 @@
 #ifdef CONFIG_MIGRATION
 
 extern void putback_movable_pages(struct list_head *l);
-extern int migrate_page(struct address_space *,
-			struct page *, struct page *, enum migrate_mode);
+extern int migrate_page(struct address_space *mapping,
+			struct page *newpage, struct page *page,
+			enum migrate_mode mode);
 extern int migrate_pages(struct list_head *l, new_page_t new, free_page_t free,
 		unsigned long private, enum migrate_mode mode, int reason);
 extern int isolate_movable_page(struct page *page, isolate_mode_t mode);