From: Alex Shi <alex.shi@xxxxxxxxxxxxxxxxx> Subject: mm/memcg: remove incorrect comment Swapcache readahead pages are charged before being used, so it is unlikely that they will be migrated before charging. Remove the incorrect comment. Link: https://lkml.kernel.org/r/1605864930-49405-1-git-send-email-alex.shi@xxxxxxxxxxxxxxxxx Signed-off-by: Alex Shi <alex.shi@xxxxxxxxxxxxxxxxx> Cc: Johannes Weiner <hannes@xxxxxxxxxxx> Cc: Michal Hocko <mhocko@xxxxxxxxxx> Cc: Vladimir Davydov <vdavydov.dev@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/memcontrol.c | 1 - 1 file changed, 1 deletion(-) --- a/mm/memcontrol.c~mm-memcg-remove-incorrect-comments +++ a/mm/memcontrol.c @@ -6903,7 +6903,6 @@ void mem_cgroup_migrate(struct page *old if (newpage->mem_cgroup) return; - /* Swapcache readahead pages can get replaced before being charged */ memcg = oldpage->mem_cgroup; if (!memcg) return; _
