As of now, it is not possible for the user to temporarily enable locking for specific operation or/and on specific inodes.
Sometimes, it is wanted to have the guaranty that no conflict can happens. If a user wants to rename a file and be sure that when the rename complete, it will have the uniqueness in the destination name, it should be possible for him to tell us that the next operations on that files ensure proper locking of the file system.
As of now, it is not possible for the user to temporarily enable locking for specific operation or/and on specific inodes.
Sometimes, it is wanted to have the guaranty that no conflict can happens. If a user wants to rename a file and be sure that when the rename complete, it will have the uniqueness in the destination name, it should be possible for him to tell us that the next operations on that files ensure proper locking of the file system.