[LTP] [PATCH v6] io_submit04: Add test case for RWF_NOWAIT flag

[Wei Gao]

On Fri, Mar 27, 2026 at 07:17:10PM +0100, Petr Vorel wrote:
> Hi Wei, all,
> 
> > +	struct timespec timeout = { .tv_sec = 1 };
> > +	long nr = 1;
> > +
> > +	TEST(tst_syscall(__NR_io_submit, ctx, nr, iocbs));
> > +
> > +	if (TST_RET == -1 && TST_ERR == EOPNOTSUPP) {
> > +		tst_brk(TCONF, "RWF_NOWAIT not supported by kernel");
> > +	} else if (TST_RET != nr) {
> > +		tst_brk(TBROK | TTERRNO, "io_submit() returns %ld, expected %ld",
> > +				TST_RET, nr);
> > +	}
> 
> Maybe move this to setup()?
Moving io_submit() to setup() breaks multi-iteration testing. Since io_getevents() reaps the request,
we should call io_submit() inside the run() loop to re-queue the operation for the next pass.