4 extern int read_iolog_get(struct thread_data *, struct io_u *);
5 extern void write_iolog_put(struct thread_data *, struct io_u *);
6 extern int init_iolog(struct thread_data *td);
7 extern void log_io_piece(struct thread_data *, struct io_u *);
8 extern void prune_io_piece_log(struct thread_data *);
9 extern void write_iolog_close(struct thread_data *);