From: yangerkun
'a2b8b2d97567 ("dm crypt: export sysfs of kcryptd workqueue")' give us
idea to set specific CPU or limit max_active crypt work. However sysfs
will report a warnning and fail 'cryptsetup refresh test' since the
reload will alloc workqueue with same sysfs name, and we temporarily
re
'a2b8b2d97567 ("dm crypt: export sysfs of kcryptd workqueue")' give us
idea to set specific CPU or limit max_active crypt work. However sysfs
will report a warnning and fail 'cryptsetup refresh test' since the
reload will alloc workqueue with same sysfs name, and we temporarily
revert this feature
