148         return Ok(self.inner_inode.fs().root_inode().metadata()?.inode_id  in is_mountpoint_root()
149             == self.inner_inode.metadata()?.inode_id);  in is_mountpoint_root()
158         let inode_id = self.metadata().unwrap().inode_id;  in overlaid_inode()  localVariable
160         if let Some(sub_mountfs) = self.mount_fs.mountpoints.lock().get(&inode_id) {  in overlaid_inode()
215             .remove(&self.inner_inode.metadata()?.inode_id)  in do_umount()
223         while current.metadata()?.inode_id != ROOT_INODE().metadata()?.inode_id {  in do_absolute_path()
346         let inode_id = self.inner_inode.find(name)?.metadata()?.inode_id;  in unlink()  localVariable
349         if self.mount_fs.mountpoints.lock().contains_key(&inode_id) {  in unlink()
358         let inode_id = self.inner_inode.find(name)?.metadata()?.inode_id;  in rmdir()  localVariable
361         if self.mount_fs.mountpoints.lock().contains_key(&inode_id) {  in rmdir()
454             .insert(metadata.inode_id, new_mount_fs.clone());  in mount()
475             .insert(metadata.inode_id, new_mount_fs.clone());  in mount_from()