Re: [PATCH rfc 0/3] mm: memcg: deprecate cgroup v1 non-hierarchical mode

[David Rientjes]

On Tue, 3 Nov 2020, Roman Gushchin wrote:

> The non-hierarchical cgroup v1 mode is a legacy of early days
> of the memory controller and doesn't bring any value today.
> However, it complicates the code and creates many edge cases
> all over the memory controller code.
> 
> It's a good time to deprecate it completely. This patchset removes
> the internal logic, adjusts the user interface and updates
> the documentation. The alt patch removes some bits of the cgroup
> core code, which become obsolete.
> 
> 
> Roman Gushchin (3):
>   mm: memcg: deprecate the non-hierarchical mode
>   docs: cgroup-v1: reflect the deprecation of the non-hierarchical mode
>   cgroup: remove obsoleted broken_hierarchy and warned_broken_hierarchy
> 

For all three patches:

Acked-by: David Rientjes <rientjes@xxxxxxxxxx>

Very welcome change to see, we've always prevented the non-hierarchical 
mode from being set in our kernel.