[PATCH libaio 23/28] harness: Handle -ENOTSUP from io_submit() with RWF_NOWAIT

[PATCH libaio 23/28] harness: Handle -ENOTSUP from io_submit() with RWF_NOWAIT

On filesystems such as tmpfs the syscall might return -ENOTSUP instead
of EINVAL when it does not support the RWF_NOWAIT flag.

Signed-off-by: Guillem Jover <guillem@hadrons.org>
[JEM: skip the test instead of returning success]
[JEM: make the error message differentiate between kernel and fs support]
Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Gbp-Pq: Topic upstream
Gbp-Pq: Name 0023-harness-Handle-ENOTSUP-from-io_submit-with-RWF_NOWAI.patch