Tests the RWF_NOWAIT flag so the I/O returns immediately with
-EAGAIN on a new file since it requires block allocation.
It creates a file, syncs it, and overwrites the file with
RWF_NOWAIT. This should succeed.
Finally, read the contents to make sure the overwrite is successful.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
Goldwyn Rodrigues