483 	mntget(path->mnt);  in path_get()
497 	mntput(path->mnt);  in path_put()
567 static bool path_connected(struct vfsmount *mnt, struct dentry *dentry)  in path_connected()  argument
569 	struct super_block *sb = mnt->mnt_sb;  in path_connected()
572 	if (mnt->mnt_root == sb->s_root)  in path_connected()
575 	return is_subdir(dentry, mnt->mnt_root);  in path_connected()
610 	int res = __legitimize_mnt(path->mnt, mseq);  in __legitimize_path()
613 			path->mnt = NULL;  in __legitimize_path()
651 	if (!nd->root.mnt && (nd->flags & LOOKUP_IS_SCOPED))  in legitimize_root()
654 	if (!nd->root.mnt || (nd->flags & LOOKUP_ROOT))  in legitimize_root()
700 	nd->path.mnt = NULL;  in unlazy_walk()
727 	if (unlikely(!legitimize_mnt(nd->path.mnt, nd->m_seq)))  in unlazy_child()
753 	nd->path.mnt = NULL;  in unlazy_child()
794 			nd->root.mnt = NULL;  in complete_walk()
869 		if (nd->path.mnt != NULL && nd->path.mnt != nd->root.mnt)  in nd_jump_root()
872 	if (!nd->root.mnt) {  in nd_jump_root()
909 		if (nd->path.mnt != path->mnt)  in nd_jump_link()
1104 	struct mount *mnt = real_mount(path->mnt);  in follow_up()  local
1109 	parent = mnt->mnt_parent;  in follow_up()
1110 	if (parent == mnt) {  in follow_up()
1114 	mntget(&parent->mnt);  in follow_up()
1115 	mountpoint = dget(mnt->mnt_mountpoint);  in follow_up()
1119 	mntput(path->mnt);  in follow_up()
1120 	path->mnt = &parent->mnt;  in follow_up()
1133 			     root->mnt == &m->mnt))  in choose_mountpoint_rcu()
1135 		if (mountpoint != m->mnt.mnt_root) {  in choose_mountpoint_rcu()
1136 			path->mnt = &m->mnt;  in choose_mountpoint_rcu()
1210 	struct vfsmount *mnt = path->mnt;  in __traverse_mounts()  local
1229 					mntput(path->mnt);  in __traverse_mounts()
1230 				path->mnt = mounted;  in __traverse_mounts()
1252 	if (need_mntput && path->mnt == mnt)  in __traverse_mounts()
1253 		mntput(path->mnt);  in __traverse_mounts()
1282 		mntput(path->mnt);  in follow_down_one()
1283 		path->mnt = mounted;  in follow_down_one()
1298 	struct vfsmount *mnt = path->mnt;  in follow_down()  local
1302 	if (path->mnt != mnt)  in follow_down()
1303 		mntput(mnt);  in follow_down()
1337 			struct mount *mounted = __lookup_mnt(path->mnt, dentry);  in __follow_mount_rcu()
1339 				path->mnt = &mounted->mnt;  in __follow_mount_rcu()
1340 				dentry = path->dentry = mounted->mnt.mnt_root;  in __follow_mount_rcu()
1367 	path->mnt = nd->path.mnt;  in handle_mounts()
1378 		path->mnt = nd->path.mnt;  in handle_mounts()
1390 		if (path->mnt != nd->path.mnt)  in handle_mounts()
1391 			mntput(path->mnt);  in handle_mounts()
1630 			unlikely(link->mnt->mnt_flags & MNT_NOSYMFOLLOW))  in pick_link()
1701 			if (nd->path.mnt != path.mnt)  in step_into()
1702 				mntput(nd->path.mnt);  in step_into()
1714 		if (path.mnt == nd->path.mnt)  in step_into()
1715 			mntget(path.mnt);  in step_into()
1728 	if (unlikely(nd->path.dentry == nd->path.mnt->mnt_root)) {  in follow_dotdot_rcu()
1731 		if (!choose_mountpoint_rcu(real_mount(nd->path.mnt),  in follow_dotdot_rcu()
1749 	if (unlikely(!path_connected(nd->path.mnt, parent)))  in follow_dotdot_rcu()
1768 	if (unlikely(nd->path.dentry == nd->path.mnt->mnt_root)) {  in follow_dotdot()
1771 		if (!choose_mountpoint(real_mount(nd->path.mnt),  in follow_dotdot()
1782 	if (unlikely(!path_connected(nd->path.mnt, parent))) {  in follow_dotdot()
1805 		if (!nd->root.mnt) {  in handle_dots()
2238 	nd->root.mnt = NULL;  in path_init()
2239 	nd->path.mnt = NULL;  in path_init()
2348 		nd->path.mnt = NULL;  in path_lookupat()
2391 		nd->path.mnt = NULL;  in path_parentat()
2467 int vfs_path_lookup(struct dentry *dentry, struct vfsmount *mnt,  in vfs_path_lookup()  argument
2471 	struct path root = {.mnt = mnt, .dentry = dentry};  in vfs_path_lookup()
2627 	if (unlikely(!path_connected(path->mnt, parent))) {  in path_pts()
2836 	return !(path->mnt->mnt_flags & MNT_NODEV) &&  in may_open_dev()
2837 		!(path->mnt->mnt_sb->s_iflags & SB_I_NODEV);  in may_open_dev()
2969 	file->f_path.mnt = nd->path.mnt;  in atomic_open()
3165 		error = mnt_want_write(nd->path.mnt);  in open_last_lookups()
3187 		mnt_drop_write(nd->path.mnt);  in open_last_lookups()
3245 		error = mnt_want_write(nd->path.mnt);  in do_open()
3262 		mnt_drop_write(nd->path.mnt);  in do_open()
3314 	error = mnt_want_write(path.mnt);  in do_tmpfile()
3328 	file->f_path.mnt = path.mnt;  in do_tmpfile()
3331 	mnt_drop_write(path.mnt);  in do_tmpfile()
3405 struct file *do_file_open_root(struct dentry *dentry, struct vfsmount *mnt,  in do_file_open_root()  argument
3413 	nd.root.mnt = mnt;  in do_file_open_root()
3462 	err2 = mnt_want_write(path->mnt);  in filename_create()
3498 		mnt_drop_write(path->mnt);  in filename_create()
3517 	mnt_drop_write(path->mnt);  in done_path_create()
3758 	error = mnt_want_write(path.mnt);  in do_rmdir()
3779 	mnt_drop_write(path.mnt);  in do_rmdir()
3879 	error = mnt_want_write(path.mnt);  in do_unlinkat()
3910 	mnt_drop_write(path.mnt);  in do_unlinkat()
4134 	if (old_path.mnt != new_path.mnt)  in do_linkat()
4390 	if (old_path.mnt != new_path.mnt)  in do_renameat2()
4402 	error = mnt_want_write(old_path.mnt);  in do_renameat2()
4471 	mnt_drop_write(old_path.mnt);  in do_renameat2()