middle_class 1979 kernel/locking/lockdep.c struct lock_class *middle_class = prev_class; middle_class 1981 kernel/locking/lockdep.c if (middle_class == safe_class) middle_class 1982 kernel/locking/lockdep.c middle_class = next_class; middle_class 1997 kernel/locking/lockdep.c if (middle_class != unsafe_class) { middle_class 2001 kernel/locking/lockdep.c __print_lock_name(middle_class); middle_class 2018 kernel/locking/lockdep.c __print_lock_name(middle_class);