Re: [PATCH 2/2] memcg: unify memcg stat flushing

[Johannes Weiner]

On Wed, Sep 29, 2021 at 09:47:11PM -0700, Shakeel Butt wrote:
> The memcg stats can be flushed in multiple context and potentially in
> parallel too. For example multiple parallel user space readers for memcg
> stats will contend on the rstat locks with each other. There is no need
> for that. We just need one flusher and everyone else can benefit. In
> addition after aa48e47e3906 ("memcg: infrastructure to flush memcg
> stats") the kernel periodically flush the memcg stats from the root, so,
> the other flushers will potentially have much less work to do.
> 
> Signed-off-by: Shakeel Butt <shakeelb@xxxxxxxxxx>

Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>