ltp-aiodio: new dio_sparse tests specifying offset

The first 4 tests are to cover the second issue described in this patch

direct-io: fix direct write stale data exposure from concurrent buffered read
https://patchwork.ozlabs.org/patch/622065/

Other tests are added to test various offsets.

Signed-off-by: Eryu Guan <eguan@redhat.com>
Acked-by: Jan Stancek <jstancek@redhat.com>
1 file changed