When bandblocks_set acknowledges a range or badblocks_clear a range,
it's possible all badblocks are acknowledged. We should update
unacked_exist if this occurs.
Signed-off-by: NShaohua Li <shli@fb.com>
Reviewed-by: NTomasz Majchrzak <tomasz.majchrzak@intel.com>
Tested-by: NTomasz Majchrzak <tomasz.majchrzak@intel.com>
Signed-off-by: NJens Axboe <axboe@fb.com>