1956 init_task_pid(struct task_struct *task, enum pid_type type, struct pid *pid)  in init_task_pid()  argument
1959 		task->thread_pid = pid;  in init_task_pid()
1961 		task->signal->pids[type] = pid;  in init_task_pid()
1985 struct pid *pidfd_pid(const struct file *file)  in pidfd_pid()
1995 	struct pid *pid = file->private_data;  in pidfd_release()  local
1998 	put_pid(pid);  in pidfd_release()
2040 	struct pid *pid = f->private_data;  in pidfd_show_fdinfo()  local
2044 	if (likely(pid_has_task(pid, PIDTYPE_PID))) {  in pidfd_show_fdinfo()
2046 		nr = pid_nr_ns(pid, ns);  in pidfd_show_fdinfo()
2061 		for (i = ns->level + 1; i <= pid->level; i++)  in pidfd_show_fdinfo()
2062 			seq_put_decimal_ll(m, "\t", pid->numbers[i].nr);  in pidfd_show_fdinfo()
2074 	struct pid *pid = file->private_data;  in pidfd_poll()  local
2077 	poll_wait(file, &pid->wait_pidfd, pts);  in pidfd_poll()
2084 	if (thread_group_exited(pid))  in pidfd_poll()
2126 static int __pidfd_prepare(struct pid *pid, unsigned int flags, struct file **ret)  in __pidfd_prepare()  argument
2138 	pidfd_file = anon_inode_getfile("[pidfd]", &pidfd_fops, pid,  in __pidfd_prepare()
2144 	get_pid(pid); /* held by pidfd_file now */  in __pidfd_prepare()
2175 int pidfd_prepare(struct pid *pid, unsigned int flags, struct file **ret)  in pidfd_prepare()  argument
2177 	if (!pid || !pid_has_task(pid, PIDTYPE_TGID))  in pidfd_prepare()
2180 	return __pidfd_prepare(pid, flags, ret);  in pidfd_prepare()
2238 					struct pid *pid,  in copy_process()  argument
2513 	if (pid != &init_struct_pid) {  in copy_process()
2514 		pid = alloc_pid(p->nsproxy->pid_ns_for_children, args->set_tid,  in copy_process()
2516 		if (IS_ERR(pid)) {  in copy_process()
2517 			retval = PTR_ERR(pid);  in copy_process()
2529 		retval = __pidfd_prepare(pid, O_RDWR | O_CLOEXEC, &pidfile);  in copy_process()
2562 	p->pid = pid_nr(pid);  in copy_process()
2568 		p->tgid = p->pid;  in copy_process()
2650 	if (unlikely(!(ns_of_pid(pid)->pid_allocated & PIDNS_ADDING))) {  in copy_process()
2670 	if (likely(p->pid)) {  in copy_process()
2673 		init_task_pid(p, PIDTYPE_PID, pid);  in copy_process()
2675 			init_task_pid(p, PIDTYPE_TGID, pid);  in copy_process()
2679 			if (is_child_reaper(pid)) {  in copy_process()
2680 				ns_of_pid(pid)->child_reaper = p;  in copy_process()
2745 	if (pid != &init_struct_pid)  in copy_process()
2746 		free_pid(pid);  in copy_process()
2869 	struct pid *pid;  in kernel_clone()  local
2918 	pid = get_task_pid(p, PIDTYPE_PID);  in kernel_clone()
2919 	nr = pid_vnr(pid);  in kernel_clone()
2941 		ptrace_event_pid(trace, pid);  in kernel_clone()
2945 			ptrace_event_pid(PTRACE_EVENT_VFORK_DONE, pid);  in kernel_clone()
2948 	put_pid(pid);  in kernel_clone()