On Tue, May 21, 2019 at 01:07:29PM -0700, Roman Gushchin wrote:
> Initialize kmem_cache->memcg_params.memcg pointer in
> memcg_link_cache() rather than in init_memcg_params().
>
> Once kmem_cache will hold a reference to the memory cgroup,
> it will simplify the refcounting.
>
> For non-root kmem_caches memcg_link_cache() is always called
> before the kmem_cache becomes visible to a user, so it's safe.
>
> Signed-off-by: Roman Gushchin <[email protected]>
> Reviewed-by: Shakeel Butt <[email protected]>
Acked-by: Johannes Weiner <[email protected]>