2021-05-05 21:12:52

by Roman Gushchin

[permalink] [raw]
Subject: 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 <[email protected]>
> Signed-off-by: Waiman Long <[email protected]>

Acked-by: Roman Gushchin <[email protected]>