Re: [v7 5/5] mm, oom: cgroup v2 mount option to disable cgroup-aware OOM killer

[Shakeel Butt]

On Mon, Sep 4, 2017 at 7:21 AM, Roman Gushchin <guro@xxxxxx> wrote:
> Introducing of cgroup-aware OOM killer changes the victim selection
> algorithm used by default: instead of picking the largest process,
> it will pick the largest memcg and then the largest process inside.
>
> This affects only cgroup v2 users.
>
> To provide a way to use cgroups v2 if the old OOM victim selection
> algorithm is preferred for some reason, the nogroupoom mount option
> is added.

Is this mount option or boot parameter? From the code, it seems like a
boot parameter.