Swapcache readahead pages are charged before get used, so it unlikely be
migrated before charged. remove the incorrect comments.
Signed-off-by: Alex Shi <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Vladimir Davydov <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
---
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