Hello.
On Mon, May 30, 2022 at 03:49:11PM +0800, Muchun Song <songmuchun@xxxxxxxxxxxxx> wrote:
> So we also allocate an object cgroup for the root_mem_cgroup.
This change made me wary that this patch also kmem charging in the
root_mem_cgroup. Fortunately, get_obj_cgroup_from_current won't return
this objcg so all is fine.
> +}
> +#else
> +static inline void obj_cgroup_release_bytes(struct obj_cgroup *objcg)
> +{
> +}
> +#endif
This empty body is for !CONFIG_MEMCG_KMEM, however, the subsequent use for LRU
pages makes no use of these, so it's warranted.
Altogether, I find this correct, hence
Reviewed-by: Michal Koutný <mkoutny@xxxxxxxx>
