Re: [PATCH] Documentation: cgroups: Add notes on removing PIDs fromtasks and cgroups requiring setup

From: Paul Menage
Date: Wed Mar 09 2011 - 18:14:07 EST


On Wed, Mar 9, 2011 at 1:09 PM, Eric B Munson <emunson@xxxxxxxxx> wrote:
>
> +Note: To remove a task from a cgroup you must write its PID to the root
> +tasks file.
> +

This isn't really accurate - the root cgroup is a cgroup like all the
others. More accurate would be something like:

Since every task is always a member of exactly one cgroup in each
mounted hierarchy, to remove a task from its current cgroup you must
move it into a new cgroup (possibly the root cgroup) by writing to the
new cgroup's tasks file.

Paul
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