[PATCH next-akpm] mm/memcg: remove incorrect comments

[Alex Shi]

Swapcache readahead pages are charged before get used, so it unlikely be
migrated before charged. remove the incorrect comments.

Signed-off-by: Alex Shi <alex.shi@xxxxxxxxxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx> 
Cc: Michal Hocko <mhocko@xxxxxxxxxx> 
Cc: Vladimir Davydov <vdavydov.dev@xxxxxxxxx> 
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> 
Cc: cgroups@xxxxxxxxxxxxxxx 
Cc: linux-mm@xxxxxxxxx 
Cc: linux-kernel@xxxxxxxxxxxxxxx 
---
 mm/memcontrol.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 45465c03a8d7..08c267305725 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -6941,7 +6941,6 @@ void mem_cgroup_migrate(struct page *oldpage, struct page *newpage)
 	if (page_memcg(newpage))
 		return;
 
-	/* Swapcache readahead pages can get replaced before being charged */
 	memcg = page_memcg(oldpage);
 	VM_WARN_ON_ONCE_PAGE(!memcg, oldpage);
 	if (!memcg)
-- 
2.29.GIT