Re: [PATCH 4/9] slab: reorganize memcg_cache_params

[Vladimir Davydov]

On Sat, Jan 14, 2017 at 12:54:44AM -0500, Tejun Heo wrote:
> We're gonna change how memcg caches are iterated.  In preparation,
> clean up and reorganize memcg_cache_params.
> 
> * The shared ->list is replaced by ->children in root and
>   ->children_node in children.
> 
> * ->is_root_cache is removed.  Instead ->root_cache is moved out of
>   the child union and now used by both root and children.  NULL
>   indicates root cache.  Non-NULL a memcg one.
> 
> This patch doesn't cause any observable behavior changes.
> 
> Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
> Cc: Vladimir Davydov <vdavydov.dev@xxxxxxxxx>
> Cc: Christoph Lameter <cl@xxxxxxxxx>
> Cc: Pekka Enberg <penberg@xxxxxxxxxx>
> Cc: David Rientjes <rientjes@xxxxxxxxxx>
> Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>

Acked-by: Vladimir Davydov <vdavydov.dev@xxxxxxxxx>