Re: [-mm] Add an owner to the mm_struct (v7)

[Paul Menage]

On Thu, Apr 3, 2008 at 10:44 AM, Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx> wrote:
>  +
>  +       /*
>  +        * If there are other users of the mm and the owner (us) is exiting
>  +        * we need to find a new owner to take on the responsibility.
>  +        * When we use thread groups (CLONE_THREAD), the thread group
>  +        * leader is kept around in zombie state, even after it exits.
>  +        * delay_group_leader() ensures that if the group leader is around
>  +        * we need not select a new owner.
>  +        */

Hmm, is this new check for delay_group_leader() safe? Won't we have
called exit_cgroup() by this point, and hence be reassigned to the
root cgroup? And so mm->owner->cgroups won't point to the right place?

Paul
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