Function io_uring_setup

pub unsafe fn io_uring_setup(
    entries: u32,
    p: *mut io_uring_params,
) -> Result<int>

Sets up an io_uring instance.

The instance will have submission and completion queues of at least entries entries. The result is a file descriptor to be used with mmap to establish the shared memory buffers, and with io_uring_enter and io_uring_register.