Hello Joonsoo, just in case, ---
diff --git a/mm/page_owner.c b/mm/page_owner.c
index 3b241f5..bff2d8a 100644
--- a/mm/page_owner.c
+++ b/mm/page_owner.c
@@ -8,6 +8,7 @@
#include <linux/jump_label.h>
#include <linux/migrate.h>
#include <linux/stackdepot.h>
+#include <linux/seq_file.h>
#include "internal.h"
---
Reviewed-by: Sergey Senozhatsky <sergey.senozhat...@gmail.com>
---
ps. I'm traveling now, with somewhat loose internet connection, so may
be a bit slow to reply.
-ss
