56 		.ns		= &init_pid_ns,
80 	.ns.inum = PROC_PID_INIT_INO,
82 	.ns.ops = &pidns_operations,
105 	struct pid_namespace *ns;  in put_pid()  local
110 	ns = pid->numbers[pid->level].ns;  in put_pid()
112 		kmem_cache_free(ns->pid_cachep, pid);  in put_pid()
113 		put_pid_ns(ns);  in put_pid()
133 		struct pid_namespace *ns = upid->ns;  in free_pid()  local
134 		switch (--ns->pid_allocated) {  in free_pid()
141 			wake_up_process(ns->child_reaper);  in free_pid()
145 			WARN_ON(ns->child_reaper);  in free_pid()
146 			ns->pid_allocated = 0;  in free_pid()
149 			schedule_work(&ns->proc_work);  in free_pid()
153 		idr_remove(&ns->idr, upid->nr);  in free_pid()
160 struct pid *alloc_pid(struct pid_namespace *ns)  in alloc_pid()  argument
169 	pid = kmem_cache_alloc(ns->pid_cachep, GFP_KERNEL);  in alloc_pid()
173 	tmp = ns;  in alloc_pid()
174 	pid->level = ns->level;  in alloc_pid()
176 	for (i = ns->level; i >= 0; i--) {  in alloc_pid()
204 		pid->numbers[i].ns = tmp;  in alloc_pid()
209 		if (pid_ns_prepare_proc(ns))  in alloc_pid()
213 	get_pid_ns(ns);  in alloc_pid()
220 	upid = pid->numbers + ns->level;  in alloc_pid()
222 	if (!(ns->pid_allocated & PIDNS_ADDING))  in alloc_pid()
226 		idr_replace(&upid->ns->idr, pid, upid->nr);  in alloc_pid()
227 		upid->ns->pid_allocated++;  in alloc_pid()
235 	put_pid_ns(ns);  in alloc_pid()
239 	while (++i <= ns->level) {  in alloc_pid()
241 		idr_remove(&upid->ns->idr, upid->nr);  in alloc_pid()
245 	if (ns->pid_allocated == PIDNS_ADDING)  in alloc_pid()
246 		idr_set_cursor(&ns->idr, 0);  in alloc_pid()
250 	kmem_cache_free(ns->pid_cachep, pid);  in alloc_pid()
254 void disable_pid_allocation(struct pid_namespace *ns)  in disable_pid_allocation()  argument
257 	ns->pid_allocated &= ~PIDNS_ADDING;  in disable_pid_allocation()
261 struct pid *find_pid_ns(int nr, struct pid_namespace *ns)  in find_pid_ns()  argument
263 	return idr_find(&ns->idr, nr);  in find_pid_ns()
346 struct task_struct *find_task_by_pid_ns(pid_t nr, struct pid_namespace *ns)  in find_task_by_pid_ns()  argument
350 	return pid_task(find_pid_ns(nr, ns), PIDTYPE_PID);  in find_task_by_pid_ns()
405 pid_t pid_nr_ns(struct pid *pid, struct pid_namespace *ns)  in pid_nr_ns()  argument
410 	if (pid && ns->level <= pid->level) {  in pid_nr_ns()
411 		upid = &pid->numbers[ns->level];  in pid_nr_ns()
412 		if (upid->ns == ns)  in pid_nr_ns()
426 			struct pid_namespace *ns)  in __task_pid_nr_ns()  argument
431 	if (!ns)  in __task_pid_nr_ns()
432 		ns = task_active_pid_ns(current);  in __task_pid_nr_ns()
434 		nr = pid_nr_ns(rcu_dereference(*task_pid_ptr(task, type)), ns);  in __task_pid_nr_ns()
452 struct pid *find_ge_pid(int nr, struct pid_namespace *ns)  in find_ge_pid()  argument
454 	return idr_get_next(&ns->idr, &nr);  in find_ge_pid()