Re: [PATCH v1 9/9] memcg: do not modify rstat tree for zero updates

[Shakeel Butt]

On Mon, Mar 27, 2023 at 11:17 PM Yosry Ahmed <yosryahmed@xxxxxxxxxx> wrote:
>
> In some situations, we may end up calling memcg_rstat_updated() with a
> value of 0, which means the stat was not actually updated. An example is
> if we fail to reclaim any pages in shrink_folio_list().
>
> Do not add the cgroup to the rstat updated tree in this case, to avoid
> unnecessarily flushing it.
>
> Signed-off-by: Yosry Ahmed <yosryahmed@xxxxxxxxxx>

Acked-by: Shakeel Butt <shakeelb@xxxxxxxxxx>