extern void queue_io_piece(struct thread_data *, struct io_piece *);
extern void prune_io_piece_log(struct thread_data *);
extern void write_iolog_close(struct thread_data *);
-extern int iolog_compress_init(struct thread_data *);
+extern int iolog_compress_init(struct thread_data *, struct sk_out *);
extern void iolog_compress_exit(struct thread_data *);
#ifdef CONFIG_ZLIB