[PATCH 2/2] move exit_task_namespaces() outside of exit_notify()

exit_notify() does exit_task_namespaces() after forget_original_parent(). This was needed to ensure that ->nsproxy can't be cleared prematurely, an exiting child we are going to reparent can do do_notify_parent() and use the parent's (ours) pid_ns. However, after 32084504 "pidns: use

[PATCH 2/2] move exit_task_namespaces() outside of exit_notify()

exit_notify() does exit_task_namespaces() after forget_original_parent(). This was needed to ensure that -nsproxy can't be cleared prematurely, an exiting child we are going to reparent can do do_notify_parent() and use the parent's (ours) pid_ns. However, after 32084504 pidns: use