This case tests whether dio read can repair the bad copy if we have
a good copy.
Commit 2dabb3248453 ("Btrfs: Direct I/O read: Work on sectorsized
blocks") introduced the regression.
The upstream fix is commit 2e949b0a5592 ("Btrfs: fix invalid
dereference in btrfs_retry_endio")
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Reviewed-by: Filipe Manana <fdmanana@gmail.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
Liu Bo