-struct io_plan *io_write_partial_(struct io_conn *conn,
- const void *data, size_t *len,
- struct io_plan *(*cb)(struct io_conn*, void *),
- void *arg)
+struct io_plan io_write_partial_(const void *data, size_t *len,
+ struct io_plan (*cb)(struct io_conn*, void *),
+ void *arg)