These tests use an overlay mount as lower layer for a nested overlay.
That provides test coverage for a lower layer with null uuid and
lower layer with real inode numbers that use the high xino bits.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
Amir Goldstein