41 	struct mount *m = mnt;  in get_peer_under_root()  local
45 		if (m->mnt_ns == ns && is_path_reachable(m, m->mnt.mnt_root, root))  in get_peer_under_root()
46 			return m;  in get_peer_under_root()
48 		m = next_peer(m);  in get_peer_under_root()
49 	} while (m != mnt);  in get_peer_under_root()
62 	struct mount *m;  in get_dominating_id()  local
64 	for (m = mnt->mnt_master; m != NULL; m = m->mnt_master) {  in get_dominating_id()
65 		struct mount *d = get_peer_under_root(m, mnt->mnt_ns, root);  in get_dominating_id()
94 		struct mount *m;  in do_make_slave()  local
100 		for (m = master = next_peer(mnt); m != mnt; m = next_peer(m)) {  in do_make_slave()
101 			if (m->mnt.mnt_root == mnt->mnt.mnt_root) {  in do_make_slave()
102 				master = m;  in do_make_slave()
149 static struct mount *propagation_next(struct mount *m,  in propagation_next()  argument
153 	if (!IS_MNT_NEW(m) && !list_empty(&m->mnt_slave_list))  in propagation_next()
154 		return first_slave(m);  in propagation_next()
157 		struct mount *master = m->mnt_master;  in propagation_next()
160 			struct mount *next = next_peer(m);  in propagation_next()
162 		} else if (m->mnt_slave.next != &master->mnt_slave_list)  in propagation_next()
163 			return next_slave(m);  in propagation_next()
166 		m = master;  in propagation_next()
170 static struct mount *skip_propagation_subtree(struct mount *m,  in skip_propagation_subtree()  argument
177 	if (!IS_MNT_NEW(m) && !list_empty(&m->mnt_slave_list))  in skip_propagation_subtree()
178 		m = last_slave(m);  in skip_propagation_subtree()
180 	return m;  in skip_propagation_subtree()
183 static struct mount *next_group(struct mount *m, struct mount *origin)  in next_group()  argument
188 			if (!IS_MNT_NEW(m) && !list_empty(&m->mnt_slave_list))  in next_group()
189 				return first_slave(m);  in next_group()
190 			next = next_peer(m);  in next_group()
191 			if (m->mnt_group_id == origin->mnt_group_id) {  in next_group()
194 			} else if (m->mnt_slave.next != &next->mnt_slave)  in next_group()
196 			m = next;  in next_group()
200 			struct mount *master = m->mnt_master;  in next_group()
201 			if (m->mnt_slave.next != &master->mnt_slave_list)  in next_group()
202 				return next_slave(m);  in next_group()
203 			m = next_peer(master);  in next_group()
206 			if (master->mnt_slave.next == &m->mnt_slave)  in next_group()
208 			m = master;  in next_group()
210 		if (m == origin)  in next_group()
225 static int propagate_one(struct mount *m)  in propagate_one()  argument
230 	if (IS_MNT_NEW(m))  in propagate_one()
233 	if (!is_subdir(mp->m_dentry, m->mnt.mnt_root))  in propagate_one()
235 	if (peers(m, last_dest)) {  in propagate_one()
240 		for (n = m; ; n = p) {  in propagate_one()
257 		if (IS_MNT_SHARED(m))  in propagate_one()
264 	mnt_set_mountpoint(m, mp, child);  in propagate_one()
265 	last_dest = m;  in propagate_one()
267 	if (m->mnt_master != dest_master) {  in propagate_one()
269 		SET_MNT_MARK(m->mnt_master);  in propagate_one()
273 	return count_mounts(m->mnt_ns, child);  in propagate_one()
292 	struct mount *m, *n;  in propagate_mnt()  local
315 	for (m = next_group(dest_mnt, dest_mnt); m;  in propagate_mnt()
316 			m = next_group(m, dest_mnt)) {  in propagate_mnt()
318 		n = m;  in propagate_mnt()
324 		} while (n != m);  in propagate_mnt()
329 		m = n->mnt_parent;  in propagate_mnt()
330 		if (m->mnt_master != dest_mnt->mnt_master)  in propagate_mnt()
331 			CLEAR_MNT_MARK(m->mnt_master);  in propagate_mnt()
372 	struct mount *m, *child, *topper;  in propagate_mount_busy()  local
386 	for (m = propagation_next(parent, parent); m;  in propagate_mount_busy()
387 	     		m = propagation_next(m, parent)) {  in propagate_mount_busy()
389 		child = __lookup_mnt(&m->mnt, mnt->mnt_mountpoint);  in propagate_mount_busy()
416 	struct mount *m, *child;  in propagate_mount_unlock()  local
420 	for (m = propagation_next(parent, parent); m;  in propagate_mount_unlock()
421 			m = propagation_next(m, parent)) {  in propagate_mount_unlock()
422 		child = __lookup_mnt(&m->mnt, mnt->mnt_mountpoint);  in propagate_mount_unlock()
546 		struct mount *m;  in propagate_umount()  local
558 		for (m = propagation_next(parent, parent); m;  in propagate_umount()
559 		     m = propagation_next(m, parent)) {  in propagate_umount()
560 			struct mount *child = __lookup_mnt(&m->mnt,  in propagate_umount()
573 				m = skip_propagation_subtree(m, parent);  in propagate_umount()
608 	struct mount *p = mnt, *m;  in propagate_remount()  local
615 		m = __lookup_mnt(&p->mnt, mnt->mnt_mountpoint);  in propagate_remount()
616 		if (m)  in propagate_remount()
617 			sb->s_op->copy_mnt_data(m->mnt.data, mnt->mnt.data);  in propagate_remount()