673 	struct mnt_namespace *ns = current->nsproxy->mnt_ns;  in __is_local_mountpoint()  local
681 	list_for_each_entry(mnt, &ns->list, mnt_list) {  in __is_local_mountpoint()
776 static void touch_mnt_namespace(struct mnt_namespace *ns)  in touch_mnt_namespace()  argument
778 	if (ns) {  in touch_mnt_namespace()
779 		ns->event = ++event;  in touch_mnt_namespace()
780 		wake_up_interruptible(&ns->poll);  in touch_mnt_namespace()
787 static void __touch_mnt_namespace(struct mnt_namespace *ns)  in __touch_mnt_namespace()  argument
789 	if (ns && ns->event != event) {  in __touch_mnt_namespace()
790 		ns->event = event;  in __touch_mnt_namespace()
791 		wake_up_interruptible(&ns->poll);  in __touch_mnt_namespace()
1246 	if (p->cached_event == p->ns->event) {  in m_start()
1251 			v = seq_list_next(v, &p->ns->list, &p->cached_index);  in m_start()
1256 	p->cached_event = p->ns->event;  in m_start()
1257 	p->cached_mount = seq_list_start(&p->ns->list, *pos);  in m_start()
1266 	p->cached_mount = seq_list_next(v, &p->ns->list, pos);  in m_next()
1436 		struct mnt_namespace *ns;  in umount_tree()  local
1441 		ns = p->mnt_ns;  in umount_tree()
1442 		if (ns) {  in umount_tree()
1443 			ns->mounts--;  in umount_tree()
1444 			__touch_mnt_namespace(ns);  in umount_tree()
1702 struct mnt_namespace *to_mnt_ns(struct ns_common *ns)  in to_mnt_ns()  argument
1704 	return container_of(ns, struct mnt_namespace, ns);  in to_mnt_ns()
1905 int count_mounts(struct mnt_namespace *ns, struct mount *mnt)  in count_mounts()  argument
1914 	old = ns->mounts;  in count_mounts()
1915 	pending = ns->pending_mounts;  in count_mounts()
1923 	ns->pending_mounts = pending + mounts;  in count_mounts()
1996 	struct mnt_namespace *ns = dest_mnt->mnt_ns;  in attach_recursive_mnt()  local
2011 		err = count_mounts(ns, source_mnt);  in attach_recursive_mnt()
2061 	ns->pending_mounts = 0;  in attach_recursive_mnt()
2832 static struct ucounts *inc_mnt_namespaces(struct user_namespace *ns)  in inc_mnt_namespaces()  argument
2834 	return inc_ucount(ns, current_euid(), UCOUNT_MNT_NAMESPACES);  in inc_mnt_namespaces()
2842 static void free_mnt_ns(struct mnt_namespace *ns)  in free_mnt_ns()  argument
2844 	ns_free_inum(&ns->ns);  in free_mnt_ns()
2845 	dec_mnt_namespaces(ns->ucounts);  in free_mnt_ns()
2846 	put_user_ns(ns->user_ns);  in free_mnt_ns()
2847 	kfree(ns);  in free_mnt_ns()
2874 	ret = ns_alloc_inum(&new_ns->ns);  in alloc_mnt_ns()
2880 	new_ns->ns.ops = &mntns_operations;  in alloc_mnt_ns()
2895 struct mnt_namespace *copy_mnt_ns(unsigned long flags, struct mnt_namespace *ns,  in copy_mnt_ns()  argument
2905 	BUG_ON(!ns);  in copy_mnt_ns()
2908 		get_mnt_ns(ns);  in copy_mnt_ns()
2909 		return ns;  in copy_mnt_ns()
2912 	old = ns->root;  in copy_mnt_ns()
2921 	if (user_ns != ns->user_ns)  in copy_mnt_ns()
2990 	struct mnt_namespace *ns;  in mount_subtree()  local
2995 	ns = create_mnt_ns(mnt);  in mount_subtree()
2996 	if (IS_ERR(ns))  in mount_subtree()
2997 		return ERR_CAST(ns);  in mount_subtree()
3002 	put_mnt_ns(ns);  in mount_subtree()
3209 	struct mnt_namespace *ns;  in init_mount_tree()  local
3221 	ns = create_mnt_ns(mnt);  in init_mount_tree()
3222 	if (IS_ERR(ns))  in init_mount_tree()
3225 	init_task.nsproxy->mnt_ns = ns;  in init_mount_tree()
3226 	get_mnt_ns(ns);  in init_mount_tree()
3270 void put_mnt_ns(struct mnt_namespace *ns)  in put_mnt_ns()  argument
3272 	if (!atomic_dec_and_test(&ns->count))  in put_mnt_ns()
3274 	drop_collected_mounts(&ns->root->mnt);  in put_mnt_ns()
3275 	free_mnt_ns(ns);  in put_mnt_ns()
3333 static bool mnt_already_visible(struct mnt_namespace *ns, struct vfsmount *new,  in mnt_already_visible()  argument
3341 	list_for_each_entry(mnt, &ns->list, mnt_list) {  in mnt_already_visible()
3399 	struct mnt_namespace *ns = current->nsproxy->mnt_ns;  in mount_too_revealing()  local
3402 	if (ns->user_ns == &init_user_ns)  in mount_too_revealing()
3416 	return !mnt_already_visible(ns, mnt, new_mnt_flags);  in mount_too_revealing()
3434 	struct ns_common *ns = NULL;  in mntns_get()  local
3440 		ns = &nsproxy->mnt_ns->ns;  in mntns_get()
3441 		get_mnt_ns(to_mnt_ns(ns));  in mntns_get()
3445 	return ns;  in mntns_get()
3448 static void mntns_put(struct ns_common *ns)  in mntns_put()  argument
3450 	put_mnt_ns(to_mnt_ns(ns));  in mntns_put()
3453 static int mntns_install(struct nsproxy *nsproxy, struct ns_common *ns)  in mntns_install()  argument
3456 	struct mnt_namespace *mnt_ns = to_mnt_ns(ns), *old_mnt_ns;  in mntns_install()
3492 static struct user_namespace *mntns_owner(struct ns_common *ns)  in mntns_owner()  argument
3494 	return to_mnt_ns(ns)->user_ns;  in mntns_owner()