80 	struct pid *pid_a = rb_entry(a, struct pid, pidfs_node);  in pidfs_ino_cmp()
81 	struct pid *pid_b = rb_entry(b, struct pid, pidfs_node);  in pidfs_ino_cmp()
92 void pidfs_add_pid(struct pid *pid)  in pidfs_add_pid()  argument
124 	pid->ino = pidfs_ino_nr;  in pidfs_add_pid()
125 	pid->stashed = NULL;  in pidfs_add_pid()
129 	rb_find_add_rcu(&pid->pidfs_node, &pidfs_ino_tree, pidfs_ino_cmp);  in pidfs_add_pid()
133 void pidfs_remove_pid(struct pid *pid)  in pidfs_remove_pid()  argument
136 	rb_erase(&pid->pidfs_node, &pidfs_ino_tree);  in pidfs_remove_pid()
178 	struct pid *pid = pidfd_pid(f);  in pidfd_show_fdinfo()  local
182 	if (likely(pid_has_task(pid, PIDTYPE_PID))) {  in pidfd_show_fdinfo()
184 		nr = pid_nr_ns(pid, ns);  in pidfd_show_fdinfo()
199 		for (i = ns->level + 1; i <= pid->level; i++)  in pidfd_show_fdinfo()
200 			seq_put_decimal_ll(m, "\t", pid->numbers[i].nr);  in pidfd_show_fdinfo()
212 	struct pid *pid = pidfd_pid(file);  in pidfd_poll()  local
216 	poll_wait(file, &pid->wait_pidfd, pts);  in pidfd_poll()
224 	task = pid_task(pid, PIDTYPE_PID);  in pidfd_poll()
233 static inline bool pid_in_current_pidns(const struct pid *pid)  in pid_in_current_pidns()  argument
237 	if (ns->level <= pid->level)  in pid_in_current_pidns()
238 		return pid->numbers[ns->level].ns == ns;  in pid_in_current_pidns()
247 	struct pid *pid = pidfd_pid(file);  in pidfd_info()  local
268 	if (!pid_in_current_pidns(pid))  in pidfd_info()
283 	task = get_pid_task(pid, PIDTYPE_PID);  in pidfd_info()
336 	kinfo.pid = task_pid_vnr(task);  in pidfd_info()
339 	if (kinfo.pid == 0 || kinfo.tgid == 0 || (kinfo.ppid == 0 && kinfo.pid != 1))  in pidfd_info()
512 struct pid *pidfd_pid(const struct file *file)  in pidfd_pid()
611 	struct pid *pid = inode->i_private;  in pidfs_evict_inode()  local
614 	put_pid(pid);  in pidfs_evict_inode()
661 	const struct pid *pid = inode->i_private;  in pidfs_encode_fh()  local
669 	*(u64 *)fh = pid->ino;  in pidfs_encode_fh()
676 	const struct pid *pid = rb_entry(node, struct pid, pidfs_node);  in pidfs_ino_find()  local
678 	if (pid_ino < pid->ino)  in pidfs_ino_find()
680 	if (pid_ino > pid->ino)  in pidfs_ino_find()
686 static struct pid *pidfs_ino_get_pid(u64 ino)  in pidfs_ino_get_pid()
688 	struct pid *pid;  in pidfs_ino_get_pid()  local
703 	pid = rb_entry(node, struct pid, pidfs_node);  in pidfs_ino_get_pid()
706 	if (pid_vnr(pid) == 0)  in pidfs_ino_get_pid()
709 	return get_pid(pid);  in pidfs_ino_get_pid()
719 	struct pid *pid;  in pidfs_fh_to_dentry()  local
732 	pid = pidfs_ino_get_pid(pid_ino);  in pidfs_fh_to_dentry()
733 	if (!pid)  in pidfs_fh_to_dentry()
736 	ret = path_from_stashed(&pid->stashed, pidfs_mnt, pid, &path);  in pidfs_fh_to_dentry()
766 static inline bool pidfs_pid_valid(struct pid *pid, const struct path *path,  in pidfs_pid_valid()  argument
796 	if (unlikely(!pid_has_task(pid, type))) {  in pidfs_pid_valid()
826 	const struct pid *pid = data;  in pidfs_init_inode()  local
833 	inode->i_ino = pidfs_ino(pid->ino);  in pidfs_init_inode()
834 	inode->i_generation = pidfs_gen(pid->ino);  in pidfs_init_inode()
840 	struct pid *pid = data;  in pidfs_put_data()  local
841 	put_pid(pid);  in pidfs_put_data()
870 struct file *pidfs_alloc_file(struct pid *pid, unsigned int flags)  in pidfs_alloc_file()  argument
883 	ret = path_from_stashed(&pid->stashed, pidfs_mnt, get_pid(pid), &path);  in pidfs_alloc_file()
887 	if (!pidfs_pid_valid(pid, &path, flags))  in pidfs_alloc_file()