3141 	struct mount *new_mnt, *root_mnt, *old_mnt;  in SYSCALL_DEFINE2()  local
3168 	root_mnt = real_mount(root.mnt);  in SYSCALL_DEFINE2()
3172 		IS_MNT_SHARED(root_mnt->mnt_parent))  in SYSCALL_DEFINE2()
3174 	if (!check_mnt(root_mnt) || !check_mnt(new_mnt))  in SYSCALL_DEFINE2()
3182 	if (new_mnt == root_mnt || old_mnt == root_mnt)  in SYSCALL_DEFINE2()
3187 	if (!mnt_has_parent(root_mnt))  in SYSCALL_DEFINE2()
3189 	root_mp = root_mnt->mnt_mp;  in SYSCALL_DEFINE2()
3203 	detach_mnt(root_mnt, &root_parent);  in SYSCALL_DEFINE2()
3204 	if (root_mnt->mnt.mnt_flags & MNT_LOCKED) {  in SYSCALL_DEFINE2()
3206 		root_mnt->mnt.mnt_flags &= ~MNT_LOCKED;  in SYSCALL_DEFINE2()
3209 	attach_mnt(root_mnt, old_mnt, old_mp);  in SYSCALL_DEFINE2()