Re: [PATCH] mm: memcontrol: add file_thp, shmem_thp to memory.stat

[David Rientjes]

On Thu, 22 Oct 2020, Johannes Weiner wrote:

> As huge page usage in the page cache and for shmem files proliferates
> in our production environment, the performance monitoring team has
> asked for per-cgroup stats on those pages.
> 
> We already track and export anon_thp per cgroup. We already track file
> THP and shmem THP per node, so making them per-cgroup is only a matter
> of switching from node to lruvec counters. All callsites are in places
> where the pages are charged and locked, so page->memcg is stable.
> 
> Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>

Acked-by: David Rientjes <rientjes@xxxxxxxxxx>

Nice!