ext4__truncate 1493 include/trace/events/ext4.h DECLARE_EVENT_CLASS(ext4__truncate, ext4__truncate 1515 include/trace/events/ext4.h DEFINE_EVENT(ext4__truncate, ext4_truncate_enter, ext4__truncate 1522 include/trace/events/ext4.h DEFINE_EVENT(ext4__truncate, ext4_truncate_exit,