I will read this series later, but I see nothing wrong after a quick glance.
Minor nit below...
On 03/04, Christian Brauner wrote:
>
> Record the exit code and cgroupid in do_exit()
^^^^^^^^^^^^
this is no longer true. In release_task().
> @@ -254,6 +255,7 @@ void release_task(struct task_struct *p)
> write_lock_irq(&tasklist_lock);
> ptrace_release_task(p);
> thread_pid = get_pid(p->thread_pid);
> + pidfs_exit(p);
> __exit_signal(p);
And the next patch rightly moves pidfs_exit() up outside of tasklist.
Why not call it before write_lock_irq(&tasklist_lock) from the very
beginning?
Oleg.
