path_root_access
path_root_access(path) = NULL;
BUG_ON(path_root_access(dest) != path_root_access(src));
BUG_ON(path_root_access(dest) != path_root_access(src));
path_root_access(path) = access;
path_root_access(path));
ocfs2_journal_access_func access = path_root_access(path);