Re: [PATCH 0/2] CGroups: cgroup member list enhancement/fix

Paul Menage
2009-07-14T17:44:03Z

On Tue, Jul 14, 2009 at 10:34 AM, Benjamin Blum<bblum@google.com> wrote:
> procs file). While that's preferable to a global lock, if we can add a
> field to task_struct, a (lockless) flag-based approach might be
> possible.
>

I've been trying to think of a way to do that. AFAICS the only way to
do that reliably would be to move the call to cgroup_fork() that hooks
into the parent's cgroup inside the lock on the group leader's thread
list, and move the fork callbacks into cgroup_fork(). (Which would
mean that they'd not be able to sleep/fail, etc).

Paul