Re: [PATCH v4 3/3] mm: memcg/slab: Disable cache merging for KMALLOC_NORMAL caches

[Shakeel Butt]

On Wed, May 5, 2021 at 1:06 PM Waiman Long <longman@xxxxxxxxxx> wrote:
>
> The KMALLOC_NORMAL (kmalloc-<n>) caches are for unaccounted objects only
> when CONFIG_MEMCG_KMEM is enabled. To make sure that this condition
> remains true, we will have to prevent KMALOC_NORMAL caches to merge
> with other kmem caches. This is now done by setting its refcount to -1
> right after its creation.
>
> Suggested-by: Roman Gushchin <guro@xxxxxx>
> Signed-off-by: Waiman Long <longman@xxxxxxxxxx>

Reviewed-by: Shakeel Butt <shakeelb@xxxxxxxxxx>