Re: [PATCH v4 5/7] mm: rework non-root kmem_cache lifecycle management

[Roman Gushchin]

On Mon, May 20, 2019 at 10:54:24AM -0400, Waiman Long wrote:
> On 5/14/19 8:06 PM, Shakeel Butt wrote:
> > diff --git a/mm/slab_common.c b/mm/slab_common.c
> > index 4e5b4292a763..1ee967b4805e 100644
> > --- a/mm/slab_common.c
> > +++ b/mm/slab_common.c
> > @@ -45,6 +45,8 @@ static void slab_caches_to_rcu_destroy_workfn(struct work_struct *work);
> >  static DECLARE_WORK(slab_caches_to_rcu_destroy_work,
> >                     slab_caches_to_rcu_destroy_workfn);
> >
> > +static void kmemcg_queue_cache_shutdown(struct percpu_ref *percpu_ref);
> > +
> 
> kmemcg_queue_cache_shutdown is only defined if CONFIG_MEMCG_KMEM is
> defined. If it is not defined, a compilation warning can be produced.
> Maybe putting the declaration inside a CONFIG_MEMCG_KMEM block:

Hi Waiman!

Yes, that makes total sense to me. Thank you for letting me know!
How about this one?

--