42 #define pid_hashfn(nr, ns)	\  argument
43 	hash_long((unsigned long)nr + (unsigned long)ns, pidhash_shift)
82 	.ns.inum = PROC_PID_INIT_INO,
84 	.ns.ops = &pidns_operations,
108 	struct pidmap *map = upid->ns->pidmap + nr / BITS_PER_PAGE;  in free_pidmap()
239 	struct pid_namespace *ns;  in put_pid()  local
244 	ns = pid->numbers[pid->level].ns;  in put_pid()
247 		kmem_cache_free(ns->pid_cachep, pid);  in put_pid()
248 		put_pid_ns(ns);  in put_pid()
268 		struct pid_namespace *ns = upid->ns;  in free_pid()  local
270 		switch(--ns->nr_hashed) {  in free_pid()
277 			wake_up_process(ns->child_reaper);  in free_pid()
281 			WARN_ON(ns->child_reaper);  in free_pid()
282 			ns->nr_hashed = 0;  in free_pid()
285 			schedule_work(&ns->proc_work);  in free_pid()
297 struct pid *alloc_pid(struct pid_namespace *ns)  in alloc_pid()  argument
306 	pid = kmem_cache_alloc(ns->pid_cachep, GFP_KERNEL);  in alloc_pid()
310 	tmp = ns;  in alloc_pid()
311 	pid->level = ns->level;  in alloc_pid()
312 	for (i = ns->level; i >= 0; i--) {  in alloc_pid()
320 		pid->numbers[i].ns = tmp;  in alloc_pid()
325 		if (pid_ns_prepare_proc(ns))  in alloc_pid()
329 	get_pid_ns(ns);  in alloc_pid()
334 	upid = pid->numbers + ns->level;  in alloc_pid()
336 	if (!(ns->nr_hashed & PIDNS_HASH_ADDING))  in alloc_pid()
340 				&pid_hash[pid_hashfn(upid->nr, upid->ns)]);  in alloc_pid()
341 		upid->ns->nr_hashed++;  in alloc_pid()
349 	put_pid_ns(ns);  in alloc_pid()
352 	while (++i <= ns->level)  in alloc_pid()
355 	kmem_cache_free(ns->pid_cachep, pid);  in alloc_pid()
359 void disable_pid_allocation(struct pid_namespace *ns)  in disable_pid_allocation()  argument
362 	ns->nr_hashed &= ~PIDNS_HASH_ADDING;  in disable_pid_allocation()
366 struct pid *find_pid_ns(int nr, struct pid_namespace *ns)  in find_pid_ns()  argument
371 			&pid_hash[pid_hashfn(nr, ns)], pid_chain)  in find_pid_ns()
372 		if (pnr->nr == nr && pnr->ns == ns)  in find_pid_ns()
374 					numbers[ns->level]);  in find_pid_ns()
452 struct task_struct *find_task_by_pid_ns(pid_t nr, struct pid_namespace *ns)  in find_task_by_pid_ns()  argument
457 	return pid_task(find_pid_ns(nr, ns), PIDTYPE_PID);  in find_task_by_pid_ns()
501 pid_t pid_nr_ns(struct pid *pid, struct pid_namespace *ns)  in pid_nr_ns()  argument
506 	if (pid && ns->level <= pid->level) {  in pid_nr_ns()
507 		upid = &pid->numbers[ns->level];  in pid_nr_ns()
508 		if (upid->ns == ns)  in pid_nr_ns()
522 			struct pid_namespace *ns)  in __task_pid_nr_ns()  argument
527 	if (!ns)  in __task_pid_nr_ns()
528 		ns = task_active_pid_ns(current);  in __task_pid_nr_ns()
532 		nr = pid_nr_ns(task->pids[type].pid, ns);  in __task_pid_nr_ns()
540 pid_t task_tgid_nr_ns(struct task_struct *tsk, struct pid_namespace *ns)  in task_tgid_nr_ns()  argument
542 	return pid_nr_ns(task_tgid(tsk), ns);  in task_tgid_nr_ns()
557 struct pid *find_ge_pid(int nr, struct pid_namespace *ns)  in find_ge_pid()  argument
562 		pid = find_pid_ns(nr, ns);  in find_ge_pid()
565 		nr = next_pidmap(ns, nr);  in find_ge_pid()