f2fs__truncate_op 388 include/trace/events/f2fs.h DECLARE_EVENT_CLASS(f2fs__truncate_op, f2fs__truncate_op 418 include/trace/events/f2fs.h DEFINE_EVENT(f2fs__truncate_op, f2fs_truncate_blocks_enter, f2fs__truncate_op 432 include/trace/events/f2fs.h DEFINE_EVENT(f2fs__truncate_op, f2fs_truncate_inode_blocks_enter,