On Fri, Nov 06, 2020 at 07:33:33PM +0800, Alex Shi wrote: > The page->mem_cgroup member is replaced by memcg_data, and add a helper > page_memcg() for it. Need to update comments to avoid confusing. Hi Alex, thank you for bringing it in! I definitely missed those. > > 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 | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/mm/memcontrol.c b/mm/memcontrol.c > index b2aa3b73ab82..8a8debea34fc 100644 > --- a/mm/memcontrol.c > +++ b/mm/memcontrol.c > @@ -1310,7 +1310,7 @@ int mem_cgroup_scan_tasks(struct mem_cgroup *memcg, > * @page: the page > * @pgdat: pgdat of the page > * > - * This function relies on page->mem_cgroup being stable - see the > + * This function relies on page_memcg(page) being stable - see the > * access rules in commit_charge(). There are "page and memcg binding" and "page's memcg" used in similar cases, I think it's more obvious than "page_memcg(page) being stable". Maybe it helps to address Ira's comment. Anyway, please feel free to add: Acked-by: Roman Gushchin <guro@xxxxxx> Thanks!
