No page_ext function or structure is used in vmstat. Just remove
page_ext header from vmstat.

Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
---
 mm/vmstat.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/mm/vmstat.c b/mm/vmstat.c
index b731d57996c5..00e81e99c6ee 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -26,7 +26,6 @@
 #include <linux/writeback.h>
 #include <linux/compaction.h>
 #include <linux/mm_inline.h>
-#include <linux/page_ext.h>
 #include <linux/page_owner.h>
 #include <linux/sched/isolation.h>
 
-- 
2.30.0