Hi Shin'ichiro, this series reduces the dependency of blktests on modular builds of various block drivers. There are still plenty of tests that do require modules, mostly because a lot of scsi_debug and null_blk can only be set at load time, but I plan to address those in the kernel soon. Changes since v1: - drop the partial null_blk and scsi_debug changes. They caused to much trouble for just enabling one test each. - more quoting - two spelling fixes