774 static inline int check_mnt(struct mount *mnt)  in check_mnt()  function
1690 	if (!check_mnt(mnt))  in ksys_umount()
1820 	if (!check_mnt(real_mount(path->mnt)))  in collect_mounts()
2254 	if (!check_mnt(old) && old_path->dentry->d_op != &ns_dentry_operations)  in __do_loopback()
2298 	if (!check_mnt(parent))  in do_loopback()
2502 	if (!check_mnt(mnt))  in do_reconfigure_mnt()
2535 	if (!check_mnt(mnt))  in do_remount()
2621 	if (!check_mnt(p))  in do_move_mount()
2629 	if (!(attached ? check_mnt(old) : is_anon_ns(ns)))  in do_move_mount()
2714 	if (unlikely(!check_mnt(parent))) {  in do_add_mount()
3657 	if (!check_mnt(root_mnt) || !check_mnt(new_mnt))  in SYSCALL_DEFINE2()
3816 	return check_mnt(real_mount(mnt));  in our_mnt()
3939 	return !(mnt->mnt_flags & MNT_NOSUID) && check_mnt(real_mount(mnt)) &&  in mnt_may_suid()