[LTP] [PATCH v5] io_submit04: Add test case for RWF_NOWAIT flag

[Andrea Cervesato]

Hi Wei,

Thanks for the patch. I have a few issues to address before this can
be merged.

> diff --git a/include/lapi/aio_abi.h b/include/lapi/aio_abi.h
> +struct iocb_fallback {
> +        uint64_t aio_data;
> +#if __BYTE_ORDER == __LITTLE_ENDIAN
> +        uint32_t   aio_key;
> +        uint32_t aio_rw_flags;

The struct body uses spaces for indentation instead of tabs. Please
convert to tabs to match the kernel coding style used in other lapi
headers.

> +static void cleanup(void)
> +{
> +   if (fd[0])
> +           SAFE_CLOSE(fd[0]);
> +
> +   if (fd[1])
> +           SAFE_CLOSE(fd[1]);

fd is initialised to {-1, -1}. The check `if (fd[0])` is truthy for
-1, so if setup() aborts before SAFE_PIPE() (e.g. io_setup fails),
cleanup will call SAFE_CLOSE(-1) which fails with EBADF and triggers
a spurious TBROK. Use the standard LTP pattern:

    if (fd[0] != -1)
        SAFE_CLOSE(fd[0]);

    if (fd[1] != -1)
        SAFE_CLOSE(fd[1]);

> +   TEST(tst_syscall(__NR_io_submit, ctx, nr, iocbs));
> +
> +   if (TST_RET == -1 && errno == EOPNOTSUPP) {

After the TEST() macro, use TST_ERR instead of bare errno:

    if (TST_RET == -1 && TST_ERR == EOPNOTSUPP) {

Regards,
--
Andrea Cervesato
SUSE QE Automation Engineer Linux
andrea.cervesato@suse.com