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

On Wed, May 05, 2021 at 04:06:10PM -0400, Waiman Long 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 <redacted>
Signed-off-by: Waiman Long <redacted>

Acked-by: Roman Gushchin <redacted>