[-mm PATCH 5/10] Memory controller task migration (v7)
yamamoto at valinux.co.jp
Tue Aug 28 01:32:52 PDT 2007
> YAMAMOTO Takashi wrote:
> >> Allow tasks to migrate from one container to the other. We migrate
> >> mm_struct's mem_container only when the thread group id migrates.
> >> + /*
> >> + * Only thread group leaders are allowed to migrate, the mm_struct is
> >> + * in effect owned by the leader
> >> + */
> >> + if (p->tgid != p->pid)
> >> + goto out;
> > does it mean that you can't move a process between containers
> > once its thread group leader exited?
> > YAMAMOTO Takashi
> Good catch! Currently, we treat the mm as owned by the thread group leader.
> But this policy can be easily adapted to any other desired policy.
> Would you like to see it change to something else?
> Warm Regards,
> Balbir Singh
> Linux Technology Center
> IBM, ISTL
although i have no good idea right now, something which allows
to move a process with its thread group leader dead would be better.
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