Update API

- io_uring_sqe added a data field that's passed back at completion
- io_uring_sqe added an index field, for fixed buffer locations
- io_uring_setup(2) system call added a 'nr_iovecs' field

Signed-off-by: Jens Axboe <axboe@kernel.dk>

src/io_uring.c

@@ -189,11 +189,12 @@ err:
  * contains the necessary information to read/write to the rings.
  */
 int io_uring_queue_init(unsigned entries, struct io_uring_params *p,
-			struct iovec *iovecs, struct io_uring *ring)
+			struct iovec *iovecs, unsigned nr_iovecs,
+			struct io_uring *ring)
 {
 	int fd, ret;
 
-	fd = io_uring_setup(entries, iovecs, p);
+	fd = io_uring_setup(entries, iovecs, nr_iovecs, p);
 	if (fd < 0)
 		return fd;