54 		.ns		= &init_pid_ns,
78 	.ns.inum = PROC_PID_INIT_INO,
80 	.ns.ops = &pidns_operations,
103 	struct pid_namespace *ns;  in put_pid()  local
108 	ns = pid->numbers[pid->level].ns;  in put_pid()
111 		kmem_cache_free(ns->pid_cachep, pid);  in put_pid()
112 		put_pid_ns(ns);  in put_pid()
132 		struct pid_namespace *ns = upid->ns;  in free_pid()  local
133 		switch (--ns->pid_allocated) {  in free_pid()
140 			wake_up_process(ns->child_reaper);  in free_pid()
144 			WARN_ON(ns->child_reaper);  in free_pid()
145 			ns->pid_allocated = 0;  in free_pid()
148 			schedule_work(&ns->proc_work);  in free_pid()
152 		idr_remove(&ns->idr, upid->nr);  in free_pid()
159 struct pid *alloc_pid(struct pid_namespace *ns)  in alloc_pid()  argument
168 	pid = kmem_cache_alloc(ns->pid_cachep, GFP_KERNEL);  in alloc_pid()
172 	tmp = ns;  in alloc_pid()
173 	pid->level = ns->level;  in alloc_pid()
175 	for (i = ns->level; i >= 0; i--) {  in alloc_pid()
203 		pid->numbers[i].ns = tmp;  in alloc_pid()
208 		if (pid_ns_prepare_proc(ns))  in alloc_pid()
212 	get_pid_ns(ns);  in alloc_pid()
217 	upid = pid->numbers + ns->level;  in alloc_pid()
219 	if (!(ns->pid_allocated & PIDNS_ADDING))  in alloc_pid()
223 		idr_replace(&upid->ns->idr, pid, upid->nr);  in alloc_pid()
224 		upid->ns->pid_allocated++;  in alloc_pid()
232 	put_pid_ns(ns);  in alloc_pid()
236 	while (++i <= ns->level)  in alloc_pid()
237 		idr_remove(&ns->idr, (pid->numbers + i)->nr);  in alloc_pid()
240 	if (ns->pid_allocated == PIDNS_ADDING)  in alloc_pid()
241 		idr_set_cursor(&ns->idr, 0);  in alloc_pid()
245 	kmem_cache_free(ns->pid_cachep, pid);  in alloc_pid()
249 void disable_pid_allocation(struct pid_namespace *ns)  in disable_pid_allocation()  argument
252 	ns->pid_allocated &= ~PIDNS_ADDING;  in disable_pid_allocation()
256 struct pid *find_pid_ns(int nr, struct pid_namespace *ns)  in find_pid_ns()  argument
258 	return idr_find(&ns->idr, nr);  in find_pid_ns()
341 struct task_struct *find_task_by_pid_ns(pid_t nr, struct pid_namespace *ns)  in find_task_by_pid_ns()  argument
345 	return pid_task(find_pid_ns(nr, ns), PIDTYPE_PID);  in find_task_by_pid_ns()
400 pid_t pid_nr_ns(struct pid *pid, struct pid_namespace *ns)  in pid_nr_ns()  argument
405 	if (pid && ns->level <= pid->level) {  in pid_nr_ns()
406 		upid = &pid->numbers[ns->level];  in pid_nr_ns()
407 		if (upid->ns == ns)  in pid_nr_ns()
421 			struct pid_namespace *ns)  in __task_pid_nr_ns()  argument
426 	if (!ns)  in __task_pid_nr_ns()
427 		ns = task_active_pid_ns(current);  in __task_pid_nr_ns()
429 		nr = pid_nr_ns(rcu_dereference(*task_pid_ptr(task, type)), ns);  in __task_pid_nr_ns()
447 struct pid *find_ge_pid(int nr, struct pid_namespace *ns)  in find_ge_pid()  argument
449 	return idr_get_next(&ns->idr, &nr);  in find_ge_pid()