On Fri, Feb 05, 2021 at 12:30:55AM +0800, Muchun Song wrote: > The rule of list walk has gone since: > > commit a9d5adeeb4b2 ("mm/memcontrol: allow to uncharge page without using page->lru field") > > So remove the strange comment and replace the loop with a > list_for_each_entry(). > > There is only one caller of the uncharge_list(). So just fold it into > mem_cgroup_uncharge_list() and remove it. > > Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx> Thank you, Muchun!