Re: [PATCH 2/2] mm: Consider subtrees in

From: Michal Hocko
Date: Thu Jan 24 2019 - 12:01:23 EST

On Thu 24-01-19 11:00:10, Johannes Weiner wrote:
> We cannot fully eliminate a risk for regression, but it strikes me as
> highly unlikely, given the extremely young age of cgroup2-based system
> management and surrounding tooling.

I am not really sure what you consider young but this interface is 4.0+
IIRC and the cgroup v2 is considered stable since 4.5 unless I
missrememeber and that is not a short time period in my book. Changing
interfaces now represents a non-trivial risk and so far I haven't heard
any actual usecase where the current semantic is actually wrong.
Inconsistency on its own is not a sufficient justification IMO.
Michal Hocko