Comment 1 for bug 1638700

Huawei's upstream hio driver version 2.1.0.26 introduces two changes relative to the current Ubuntu version:

#1. bio_endio() shim macro sets bi_error field {{ but note bug in implementation! }}
#2. blk_queue_split() call inserted ssd_make_request()

James' initial test results indicate that #2 appears to fix the data corruption. Both fixes should be applied (though #1 needs correction) after sufficient testing confirmation.