io_uring_submit_and_wait − submit requests to the submission queue and wait for completion
#include <liburing.h>
int
io_uring_submit_and_wait(struct io_uring
*ring,
unsigned wait_nr);
The io_uring_submit_and_wait(3) function submits the next requests from the submission queue belonging to the ring and waits for wait_nr completion events.
After the caller retrieves a submission queue entry (SQE) with io_uring_get_sqe(3) and prepares the SQE, it can be submitted with io_uring_submit_and_wait(3).
On success io_uring_submit_and_wait(3) returns the number of submitted submission queue entries. On failure it returns -errno.
io_uring_get_sqe(3), io_uring_submit(3), io_uring_submit_and_wait_timeout(3)