Re: [PATCH resend] memcg: introduce per-memcg reclaim interface

Shakeel Butt
2022-04-04T21:16:29Z

On Fri, Apr 1, 2022 at 1:14 PM Wei Xu <weixugc@google.com> wrote:
>
[...]
>
> -EAGAIN sounds good, too. Given that the userspace requests to
> reclaim a specified number of bytes, I think it is generally better to
> tell the userspace whether the request has been successfully
> fulfilled. Ideally, it would be even better to return how many bytes
> that have been reclaimed, though that is not easy to do through the
> cgroup interface.

What would be the challenge on returning the number of bytes reclaimed
through cgroup interface?