213 static int mnt_alloc_id(struct mount *mnt)  in mnt_alloc_id()
225 static void mnt_free_id(struct mount *mnt)  in mnt_free_id()
233 static int mnt_alloc_group_id(struct mount *mnt)  in mnt_alloc_group_id()
246 void mnt_release_group_id(struct mount *mnt)  in mnt_release_group_id()
255 static inline void mnt_add_count(struct mount *mnt, int n)  in mnt_add_count()
269 int mnt_get_count(struct mount *mnt)  in mnt_get_count()
285 static struct mount *alloc_vfsmnt(const char *name)  in alloc_vfsmnt()
287 	struct mount *mnt = kmem_cache_zalloc(mnt_cache, GFP_KERNEL);  in alloc_vfsmnt()
365 static inline void mnt_inc_writers(struct mount *mnt)  in mnt_inc_writers()
374 static inline void mnt_dec_writers(struct mount *mnt)  in mnt_dec_writers()
383 static unsigned int mnt_get_writers(struct mount *mnt)  in mnt_get_writers()
433 	struct mount *mnt = real_mount(m);  in mnt_get_write_access()
607 static inline int mnt_hold_writers(struct mount *mnt)  in mnt_hold_writers()
650 static inline void mnt_unhold_writers(struct mount *mnt)  in mnt_unhold_writers()
662 static inline void mnt_del_instance(struct mount *m)  in mnt_del_instance()
664 	struct mount **p = m->mnt_pprev_for_sb;  in mnt_del_instance()
665 	struct mount *next = m->mnt_next_for_sb;  in mnt_del_instance()
672 static inline void mnt_add_instance(struct mount *m, struct super_block *s)  in mnt_add_instance()
674 	struct mount *first = s->s_mounts;  in mnt_add_instance()
683 static int mnt_make_readonly(struct mount *mnt)  in mnt_make_readonly()
704 	for (struct mount *m = sb->s_mounts; m; m = m->mnt_next_for_sb) {  in sb_prepare_remount_readonly()
716 	for (struct mount *m = sb->s_mounts; m; m = m->mnt_next_for_sb) {  in sb_prepare_remount_readonly()
724 static void free_vfsmnt(struct mount *mnt)  in free_vfsmnt()
736 	free_vfsmnt(container_of(head, struct mount, mnt_rcu));  in delayed_free_vfsmnt()
742 	struct mount *mnt;  in __legitimize_mnt()
789 struct mount *__lookup_mnt(struct vfsmount *mnt, struct dentry *dentry)  in __lookup_mnt()
792 	struct mount *p;  in __lookup_mnt()
809 	struct mount *child_mnt;  in lookup_mnt()
841 	struct mount *mnt, *n;  in __is_local_mountpoint()
855 	struct mount *parent;
946 static inline int check_mnt(const struct mount *mnt)  in check_mnt()
951 static inline bool check_anonymous_mnt(struct mount *mnt)  in check_anonymous_mnt()
987 static void __umount_mnt(struct mount *mnt, struct list_head *shrink_list)  in __umount_mnt()
990 	struct mount *parent = mnt->mnt_parent;  in __umount_mnt()
1006 static void umount_mnt(struct mount *mnt)  in umount_mnt()
1014 void mnt_set_mountpoint(struct mount *mnt,  in mnt_set_mountpoint()
1016 			struct mount *child_mnt)  in mnt_set_mountpoint()
1024 static void make_visible(struct mount *mnt)  in make_visible()
1026 	struct mount *parent = mnt->mnt_parent;  in make_visible()
1050 static void attach_mnt(struct mount *mnt, struct mount *parent,  in attach_mnt()
1057 void mnt_change_mountpoint(struct mount *parent, struct mountpoint *mp, struct mount *mnt)  in mnt_change_mountpoint()
1070 static inline struct mount *node_to_mount(struct rb_node *node)  in node_to_mount()
1072 	return node ? rb_entry(node, struct mount, mnt_node) : NULL;  in node_to_mount()
1075 static void mnt_add_to_ns(struct mnt_namespace *ns, struct mount *mnt)  in mnt_add_to_ns()
1104 static struct mount *next_mnt(struct mount *p, struct mount *root)  in next_mnt()
1117 	return list_entry(next, struct mount, mnt_child);  in next_mnt()
1120 static struct mount *skip_mnt_tree(struct mount *p)  in skip_mnt_tree()
1124 		p = list_entry(prev, struct mount, mnt_child);  in skip_mnt_tree()
1133 static void commit_tree(struct mount *mnt)  in commit_tree()
1138 		for (struct mount *m = mnt; m; m = next_mnt(m, mnt))  in commit_tree()
1148 static void setup_mnt(struct mount *m, struct dentry *root)  in setup_mnt()
1173 	struct mount *mnt;  in vfs_create_mount()
1240 static struct mount *clone_mnt(struct mount *old, struct dentry *root,  in clone_mnt()
1243 	struct mount *mnt;  in clone_mnt()
1292 static void cleanup_mnt(struct mount *mnt)  in cleanup_mnt()
1295 	struct mount *m;  in cleanup_mnt()
1319 	cleanup_mnt(container_of(head, struct mount, mnt_rcu));  in __cleanup_mnt()
1326 	struct mount *m, *t;  in delayed_mntput()
1333 static void noinline mntput_no_expire_slowpath(struct mount *mnt)  in mntput_no_expire_slowpath()
1366 		struct mount *p, *tmp;  in mntput_no_expire_slowpath()
1389 static void mntput_no_expire(struct mount *mnt)  in mntput_no_expire()
1412 		struct mount *m = real_mount(mnt);  in mntput()
1472 	struct mount *p;  in mnt_clone_internal()
1484 static struct mount *mnt_find_id_at(struct mnt_namespace *ns, u64 mnt_id)  in mnt_find_id_at()
1487 	struct mount *ret = NULL;  in mnt_find_id_at()
1490 		struct mount *m = node_to_mount(node);  in mnt_find_id_at()
1508 static struct mount *mnt_find_id_at_reverse(struct mnt_namespace *ns, u64 mnt_id)  in mnt_find_id_at_reverse()
1511 	struct mount *ret = NULL;  in mnt_find_id_at_reverse()
1514 		struct mount *m = node_to_mount(node);  in mnt_find_id_at_reverse()
1542 	struct mount *next = NULL, *mnt = v;  in m_next()
1561 	struct mount *r = v;  in m_show()
1584 	struct mount *mnt = real_mount(m);  in may_umount_tree()
1589 	for (struct mount *p = mnt; p; p = next_mnt(p, mnt)) {  in may_umount_tree()
1630 static void mnt_notify(struct mount *p)  in mnt_notify()
1647 	struct mount *m, *tmp;  in notify_mnt_list()
1678 	struct mount *m;  in namespace_unlock()
1728 static bool disconnect_mount(struct mount *mnt, enum umount_tree_flags how)  in disconnect_mount()
1761 static void umount_tree(struct mount *mnt, enum umount_tree_flags how)  in umount_tree()
1764 	struct mount *p;  in umount_tree()
1791 		p = list_first_entry(&tmp_list, struct mount, mnt_list);  in umount_tree()
1830 static void shrink_submounts(struct mount *mnt);
1855 static int do_umount(struct mount *mnt, int flags)  in do_umount()
1969 	struct mount *mnt;  in __detach_mounts()
1979 		mnt = hlist_entry(mp.node.next, struct mount, mnt_mp_list);  in __detach_mounts()
2008 	struct mount *mnt = real_mount(path->mnt);  in can_umount()
2027 	struct mount *mnt = real_mount(path->mnt);  in path_umount()
2147 struct mount *copy_tree(struct mount *src_root, struct dentry *dentry,  in copy_tree()
2150 	struct mount *res, *src_parent, *src_root_child, *src_mnt,  in copy_tree()
2241 	struct mount *root = real_mount(path->mnt);  in collect_paths()
2242 	struct mount *child;  in collect_paths()
2256 		for (struct mount *m = child; m; m = next_mnt(m, child)) {  in collect_paths()
2284 	struct mount *m = real_mount(mnt);  in dissolve_on_fput()
2313 static bool __has_locked_children(struct mount *mnt, struct dentry *dentry)  in __has_locked_children()
2315 	struct mount *child;  in __has_locked_children()
2327 bool has_locked_children(struct mount *mnt, struct dentry *dentry)  in has_locked_children()
2341 static bool check_for_nsfs_mounts(struct mount *subtree)  in check_for_nsfs_mounts()
2343 	for (struct mount *p = subtree; p; p = next_mnt(p, subtree))  in check_for_nsfs_mounts()
2363 	struct mount *old_mnt = real_mount(path->mnt);  in clone_private_mount()
2364 	struct mount *new_mnt;  in clone_private_mount()
2402 static void lock_mnt_tree(struct mount *mnt)  in lock_mnt_tree()
2404 	struct mount *p;  in lock_mnt_tree()
2429 static void cleanup_group_ids(struct mount *mnt, struct mount *end)  in cleanup_group_ids()
2431 	struct mount *p;  in cleanup_group_ids()
2439 static int invent_group_ids(struct mount *mnt, bool recurse)  in invent_group_ids()
2441 	struct mount *p;  in invent_group_ids()
2456 int count_mounts(struct mnt_namespace *ns, struct mount *mnt)  in count_mounts()
2460 	struct mount *p;  in count_mounts()
2549 static int attach_recursive_mnt(struct mount *source_mnt,  in attach_recursive_mnt()
2553 	struct mount *dest_mnt = dest->parent;  in attach_recursive_mnt()
2559 	struct mount *child, *p;  in attach_recursive_mnt()
2560 	struct mount *top;  in attach_recursive_mnt()
2625 		struct mount *q;  in attach_recursive_mnt()
2634 			struct mount *r = topmost_overmount(child);  in attach_recursive_mnt()
2649 		child = hlist_entry(tree_list.first, struct mount, mnt_hash);  in attach_recursive_mnt()
2665 static inline struct mount *where_to_mount(const struct path *path,  in where_to_mount()
2669 	struct mount *m;  in where_to_mount()
2730 		struct mount *m, *n;  in do_lock_mount()
2804 static int graft_tree(struct mount *mnt, const struct pinned_mountpoint *mp)  in graft_tree()
2816 static int may_change_propagation(const struct mount *m)  in may_change_propagation()
2851 	struct mount *m;  in do_change_type()
2852 	struct mount *mnt = real_mount(path->mnt);  in do_change_type()
2927 	struct mount *mnt = real_mount(path->mnt);  in may_copy_tree()
2946 static struct mount *__do_loopback(const struct path *old_path,  in __do_loopback()
2949 	struct mount *old = real_mount(old_path->mnt);  in __do_loopback()
2986 	struct mount *mnt = NULL;  in do_loopback()
3023 	struct mount *mnt, *p;  in get_detached_copy()
3085 	struct mount *new_ns_root;  in create_new_namespace()
3086 	struct mount *mnt;  in create_new_namespace()
3154 	for (struct mount *p = new_ns_root; p; p = next_mnt(p, new_ns_root)) {  in create_new_namespace()
3236 static bool can_change_locked_flags(struct mount *mnt, unsigned int mnt_flags)  in can_change_locked_flags()
3263 static int change_mount_ro_state(struct mount *mnt, unsigned int mnt_flags)  in change_mount_ro_state()
3277 static void set_mount_attributes(struct mount *mnt, unsigned int mnt_flags)  in set_mount_attributes()
3322 	struct mount *mnt = real_mount(path->mnt);  in do_reconfigure_mnt()
3361 	struct mount *mnt = real_mount(path->mnt);  in do_remount()
3404 static inline int tree_contains_unbindable(struct mount *mnt)  in tree_contains_unbindable()
3406 	struct mount *p;  in tree_contains_unbindable()
3416 	struct mount *from = real_mount(from_path->mnt);  in do_set_group()
3417 	struct mount *to = real_mount(to_path->mnt);  in do_set_group()
3500 static bool mount_is_ancestor(const struct mount *p1, const struct mount *p2)  in mount_is_ancestor()
3526 static int can_move_mount_beneath(const struct mount *mnt_from,  in can_move_mount_beneath()
3527 				  const struct mount *mnt_to,  in can_move_mount_beneath()
3530 	struct mount *parent_mnt_to = mnt_to->mnt_parent;  in can_move_mount_beneath()
3611 static inline bool may_use_mount(struct mount *mnt)  in may_use_mount()
3631 	struct mount *old = real_mount(old_path->mnt);  in do_move_mount()
3678 		struct mount *over = real_mount(new_path->mnt);  in do_move_mount()
3719 static int do_add_mount(struct mount *newmnt, const struct pinned_mountpoint *mp,  in do_add_mount()
3722 	struct mount *parent = mp->parent;  in do_add_mount()
3868 	struct mount *mnt;  in finish_automount()
3915 	struct mount *mnt, *next;  in mark_mounts_for_expiry()
3940 		mnt = list_first_entry(&graveyard, struct mount, mnt_expire);  in mark_mounts_for_expiry()
3954 static int select_submounts(struct mount *parent, struct list_head *graveyard)  in select_submounts()
3956 	struct mount *this_parent = parent;  in select_submounts()
3965 		struct mount *mnt = list_entry(tmp, struct mount, mnt_child);  in select_submounts()
4000 static void shrink_submounts(struct mount *mnt)  in shrink_submounts()
4003 	struct mount *m;  in shrink_submounts()
4008 			m = list_first_entry(&graveyard, struct mount,  in shrink_submounts()
4223 	struct mount *p, *q;  in copy_mnt_ns()
4224 	struct mount *old;  in copy_mnt_ns()
4225 	struct mount *new;  in copy_mnt_ns()
4291 	struct mount *mnt = real_mount(m);  in mount_subtree()
4325 SYSCALL_DEFINE5(mount, char __user *, dev_name, char __user *, dir_name,  in SYSCALL_DEFINE5()  argument
4400 	struct mount *mnt;  in SYSCALL_DEFINE3()
4600 bool is_path_reachable(struct mount *mnt, struct dentry *dentry,  in is_path_reachable()
4620 	struct mount *new_mnt, *root_mnt, *old_mnt, *root_parent, *ex_parent;  in path_pivot_root()
4733 static unsigned int recalc_flags(struct mount_kattr *kattr, struct mount *mnt)  in recalc_flags()
4745 static int can_idmap_mount(const struct mount_kattr *kattr, struct mount *mnt)  in can_idmap_mount()
4796 				     const struct mount *mnt)  in mnt_allow_writers()
4803 static int mount_setattr_prepare(struct mount_kattr *kattr, struct mount *mnt)  in mount_setattr_prepare()
4805 	struct mount *m;  in mount_setattr_prepare()
4832 		for (struct mount *p = mnt; p != m; p = next_mnt(p, mnt))  in mount_setattr_prepare()
4838 static void do_idmap_mount(const struct mount_kattr *kattr, struct mount *mnt)  in do_idmap_mount()
4852 static void mount_setattr_commit(struct mount_kattr *kattr, struct mount *mnt)  in mount_setattr_commit()
4854 	struct mount *m;  in mount_setattr_commit()
4876 	struct mount *mnt = real_mount(path->mnt);  in do_mount_setattr()
5176 	struct mount *mnt = mnt_find_id_at(ns, id);  in lookup_mnt_in_ns()
5228 static u64 mnt_to_propagation_flags(struct mount *m)  in mnt_to_propagation_flags()
5263 	struct mount *m = real_mount(s->mnt);  in statmount_mnt_basic()
5278 	struct mount *m = real_mount(s->mnt);  in statmount_propagate_from()
5336 	struct mount *r = real_mount(s->mnt);  in statmount_sb_source()
5608 static struct mount *listmnt_next(struct mount *curr, bool reverse)  in listmnt_next()
5622 	struct mount *first, *child;  in grab_requested_root()
5704 			struct mount *m;  in do_statmount()
5978 	struct mount *r, *first;  in do_listmount()
6127 	struct mount *mnt_root;  in init_mount_tree()
6171 	for (struct mount *p = mnt_root; p; p = next_mnt(p, mnt_root)) {  in init_mount_tree()
6192 	mnt_cache = kmem_cache_create("mnt_cache", sizeof(struct mount),  in mnt_init()
6280 	struct mount *root;  in current_chrooted()
6298 	struct mount *mnt, *n;  in mnt_already_visible()
6302 		struct mount *child;  in mnt_already_visible()