670 	struct mnt_namespace *ns = current->nsproxy->mnt_ns;  in __is_local_mountpoint()  local
678 	list_for_each_entry(mnt, &ns->list, mnt_list) {  in __is_local_mountpoint()
784 static void touch_mnt_namespace(struct mnt_namespace *ns)  in touch_mnt_namespace()  argument
786 	if (ns) {  in touch_mnt_namespace()
787 		ns->event = ++event;  in touch_mnt_namespace()
788 		wake_up_interruptible(&ns->poll);  in touch_mnt_namespace()
795 static void __touch_mnt_namespace(struct mnt_namespace *ns)  in __touch_mnt_namespace()  argument
797 	if (ns && ns->event != event) {  in __touch_mnt_namespace()
798 		ns->event = event;  in __touch_mnt_namespace()
799 		wake_up_interruptible(&ns->poll);  in __touch_mnt_namespace()
1279 	if (p->cached_event == p->ns->event) {  in m_start()
1284 			v = seq_list_next(v, &p->ns->list, &p->cached_index);  in m_start()
1289 	p->cached_event = p->ns->event;  in m_start()
1290 	p->cached_mount = seq_list_start(&p->ns->list, *pos);  in m_start()
1299 	p->cached_mount = seq_list_next(v, &p->ns->list, pos);  in m_next()
1476 		struct mnt_namespace *ns;  in umount_tree()  local
1481 		ns = p->mnt_ns;  in umount_tree()
1482 		if (ns) {  in umount_tree()
1483 			ns->mounts--;  in umount_tree()
1484 			__touch_mnt_namespace(ns);  in umount_tree()
1760 struct mnt_namespace *to_mnt_ns(struct ns_common *ns)  in to_mnt_ns()  argument
1762 	return container_of(ns, struct mnt_namespace, ns);  in to_mnt_ns()
1865 	struct mnt_namespace *ns;  in dissolve_on_fput()  local
1868 	ns = real_mount(mnt)->mnt_ns;  in dissolve_on_fput()
1869 	if (ns) {  in dissolve_on_fput()
1870 		if (is_anon_ns(ns))  in dissolve_on_fput()
1873 			ns = NULL;  in dissolve_on_fput()
1877 	if (ns)  in dissolve_on_fput()
1878 		free_mnt_ns(ns);  in dissolve_on_fput()
2011 int count_mounts(struct mnt_namespace *ns, struct mount *mnt)  in count_mounts()  argument
2020 	old = ns->mounts;  in count_mounts()
2021 	pending = ns->pending_mounts;  in count_mounts()
2029 	ns->pending_mounts = pending + mounts;  in count_mounts()
2103 	struct mnt_namespace *ns = dest_mnt->mnt_ns;  in attach_recursive_mnt()  local
2118 		err = count_mounts(ns, source_mnt);  in attach_recursive_mnt()
2176 	ns->pending_mounts = 0;  in attach_recursive_mnt()
2366 	struct mnt_namespace *ns = alloc_mnt_ns(user_ns, true);  in open_detached_copy()  local
2370 	if (IS_ERR(ns))  in open_detached_copy()
2371 		return ERR_CAST(ns);  in open_detached_copy()
2377 		free_mnt_ns(ns);  in open_detached_copy()
2383 		p->mnt_ns = ns;  in open_detached_copy()
2384 		ns->mounts++;  in open_detached_copy()
2386 	ns->root = mnt;  in open_detached_copy()
2387 	list_add_tail(&ns->list, &mnt->mnt_list);  in open_detached_copy()
2651 	struct mnt_namespace *ns;  in do_move_mount()  local
2668 	ns = old->mnt_ns;  in do_move_mount()
2680 	if (!(attached ? check_mnt(old) : is_anon_ns(ns)))  in do_move_mount()
2726 			free_mnt_ns(ns);  in do_move_mount()
3200 static struct ucounts *inc_mnt_namespaces(struct user_namespace *ns)  in inc_mnt_namespaces()  argument
3202 	return inc_ucount(ns, current_euid(), UCOUNT_MNT_NAMESPACES);  in inc_mnt_namespaces()
3210 static void free_mnt_ns(struct mnt_namespace *ns)  in free_mnt_ns()  argument
3212 	if (!is_anon_ns(ns))  in free_mnt_ns()
3213 		ns_free_inum(&ns->ns);  in free_mnt_ns()
3214 	dec_mnt_namespaces(ns->ucounts);  in free_mnt_ns()
3215 	put_user_ns(ns->user_ns);  in free_mnt_ns()
3216 	kfree(ns);  in free_mnt_ns()
3244 		ret = ns_alloc_inum(&new_ns->ns);  in alloc_mnt_ns()
3251 	new_ns->ns.ops = &mntns_operations;  in alloc_mnt_ns()
3263 struct mnt_namespace *copy_mnt_ns(unsigned long flags, struct mnt_namespace *ns,  in copy_mnt_ns()  argument
3273 	BUG_ON(!ns);  in copy_mnt_ns()
3276 		get_mnt_ns(ns);  in copy_mnt_ns()
3277 		return ns;  in copy_mnt_ns()
3280 	old = ns->root;  in copy_mnt_ns()
3289 	if (user_ns != ns->user_ns)  in copy_mnt_ns()
3297 	if (user_ns != ns->user_ns) {  in copy_mnt_ns()
3345 	struct mnt_namespace *ns;  in mount_subtree()  local
3350 	ns = alloc_mnt_ns(&init_user_ns, true);  in mount_subtree()
3351 	if (IS_ERR(ns)) {  in mount_subtree()
3353 		return ERR_CAST(ns);  in mount_subtree()
3355 	mnt->mnt_ns = ns;  in mount_subtree()
3356 	ns->root = mnt;  in mount_subtree()
3357 	ns->mounts++;  in mount_subtree()
3358 	list_add(&mnt->mnt_list, &ns->list);  in mount_subtree()
3363 	put_mnt_ns(ns);  in mount_subtree()
3426 	struct mnt_namespace *ns;  in SYSCALL_DEFINE3()  local
3521 	ns = alloc_mnt_ns(current->nsproxy->mnt_ns->user_ns, true);  in SYSCALL_DEFINE3()
3522 	if (IS_ERR(ns)) {  in SYSCALL_DEFINE3()
3523 		ret = PTR_ERR(ns);  in SYSCALL_DEFINE3()
3527 	mnt->mnt_ns = ns;  in SYSCALL_DEFINE3()
3528 	ns->root = mnt;  in SYSCALL_DEFINE3()
3529 	ns->mounts = 1;  in SYSCALL_DEFINE3()
3530 	list_add(&mnt->mnt_list, &ns->list);  in SYSCALL_DEFINE3()
3770 	struct mnt_namespace *ns;  in init_mount_tree()  local
3777 	ns = alloc_mnt_ns(&init_user_ns, false);  in init_mount_tree()
3778 	if (IS_ERR(ns))  in init_mount_tree()
3781 	m->mnt_ns = ns;  in init_mount_tree()
3782 	ns->root = m;  in init_mount_tree()
3783 	ns->mounts = 1;  in init_mount_tree()
3784 	list_add(&m->mnt_list, &ns->list);  in init_mount_tree()
3785 	init_task.nsproxy->mnt_ns = ns;  in init_mount_tree()
3786 	get_mnt_ns(ns);  in init_mount_tree()
3831 void put_mnt_ns(struct mnt_namespace *ns)  in put_mnt_ns()  argument
3833 	if (!atomic_dec_and_test(&ns->count))  in put_mnt_ns()
3835 	drop_collected_mounts(&ns->root->mnt);  in put_mnt_ns()
3836 	free_mnt_ns(ns);  in put_mnt_ns()
3894 static bool mnt_already_visible(struct mnt_namespace *ns,  in mnt_already_visible()  argument
3903 	list_for_each_entry(mnt, &ns->list, mnt_list) {  in mnt_already_visible()
3961 	struct mnt_namespace *ns = current->nsproxy->mnt_ns;  in mount_too_revealing()  local
3964 	if (ns->user_ns == &init_user_ns)  in mount_too_revealing()
3978 	return !mnt_already_visible(ns, sb, new_mnt_flags);  in mount_too_revealing()
3996 	struct ns_common *ns = NULL;  in mntns_get()  local
4002 		ns = &nsproxy->mnt_ns->ns;  in mntns_get()
4003 		get_mnt_ns(to_mnt_ns(ns));  in mntns_get()
4007 	return ns;  in mntns_get()
4010 static void mntns_put(struct ns_common *ns)  in mntns_put()  argument
4012 	put_mnt_ns(to_mnt_ns(ns));  in mntns_put()
4015 static int mntns_install(struct nsproxy *nsproxy, struct ns_common *ns)  in mntns_install()  argument
4018 	struct mnt_namespace *mnt_ns = to_mnt_ns(ns), *old_mnt_ns;  in mntns_install()
4057 static struct user_namespace *mntns_owner(struct ns_common *ns)  in mntns_owner()  argument
4059 	return to_mnt_ns(ns)->user_ns;  in mntns_owner()