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SubjectRe: [v7 5/5] mm, oom: cgroup v2 mount option to disable cgroup-aware OOM killer
On Tue, 5 Sep 2017, Michal Hocko wrote:

> I would argue that we should simply deprecate and later drop the sysctl.
> I _strongly_ suspect anybody is using this. If yes it is not that hard
> to change the kernel command like rather than select the sysctl. The
> deprecation process would be
> - warn when somebody writes to the sysctl and check both boot
> and sysctl values
> [ wait some time ]
> - keep the sysctl but return EINVAL
> [ wait some time ]
> - remove the sysctl

Note that the behavior that would be enabled by the sysctl is the default
behavior for the case of a constrained allocation. If a process does an
mbind to numa node 3 and it runs out of memory then that process should be
killed and the rest is fine.

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