Re: [merged]mm-memcg-handle-non-error-oom-situations-more-gracefully.patch removed from-mm tree

From: Michal Hocko
Date: Thu Nov 28 2013 - 04:13:19 EST


On Wed 27-11-13 18:33:53, Johannes Weiner wrote:
[...]
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index 13b9d0f..5f9e467 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -2675,7 +2675,7 @@ static int __mem_cgroup_try_charge(struct mm_struct *mm,
> goto bypass;
>
> if (unlikely(task_in_memcg_oom(current)))
> - goto bypass;
> + goto nomem;
>
> /*
> * We always charge the cgroup the mm_struct belongs to.

Yes, I think we really want this. Plan to send a patch? The first charge
failure due to OOM shouldn't be papered over by a later attempt if we
didn't get through mem_cgroup_oom_synchronize yet.

--
Michal Hocko
SUSE Labs
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