On Fri 07-02-14 12:04:22, Johannes Weiner wrote: > Users pass either a mm that has been established under task lock, or > use a verified current->mm, which means the task can't be exiting. > > Signed-off-by: Johannes Weiner <han...@cmpxchg.org>
Acked-by: Michal Hocko <mho...@suse.cz> > --- > mm/memcontrol.c | 7 ------- > 1 file changed, 7 deletions(-) > > diff --git a/mm/memcontrol.c b/mm/memcontrol.c > index e1d7f33227e4..689fffdee471 100644 > --- a/mm/memcontrol.c > +++ b/mm/memcontrol.c > @@ -1075,13 +1075,6 @@ struct mem_cgroup *try_get_mem_cgroup_from_mm(struct > mm_struct *mm) > { > struct mem_cgroup *memcg = NULL; > > - if (!mm) > - return NULL; > - /* > - * Because we have no locks, mm->owner's may be being moved to other > - * cgroup. We use css_tryget() here even if this looks > - * pessimistic (rather than adding locks here). > - */ > rcu_read_lock(); > do { > memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); > -- > 1.8.5.3 > -- Michal Hocko SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/