Function do_splice

test/splice.c:185–192

}

static int do_splice(struct io_uring *ring,
			int fd_in, loff_t off_in,
			int fd_out, loff_t off_out,
			unsigned int len)
{
	return do_splice_op(ring, fd_in, off_in, fd_out, off_out, len,
			    IORING_OP_SPLICE);
}

static int do_tee(struct io_uring *ring, int fd_in, int fd_out,
		  unsigned int len)