Re: [patch] mm: memcg: move pc lookup point to commit_charge()

KAMEZAWA Hiroyuki
2012-04-26T02:03:52Z

(2012/04/25 4:31), Johannes Weiner wrote:

> None of the callsites actually need the page_cgroup descriptor
> themselves, so just pass the page and do the look up in there.
>
> We already had two bugs (6568d4a 'mm: memcg: update the correct soft
> limit tree during migration' and 'memcg: fix Bad page state after
> replace_page_cache') where the passed page and pc were not referring
> to the same page frame.
>
> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
> Acked-by: Hugh Dickins <hughd@google.com>
> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
> Cc: Michal Hocko <mhocko@suse.cz>

Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>