On Fri, 2018-08-03 at 01:17 +0800, Ming Lei wrote:

Not mentioning big CPU utilization is consumed unnecessarily for iter=

ating

over all queues even though there is only one active queue, is this f=

air from

system view?

I hope that someone will come up some day with a better solution than the
list_for_each_entry_rcu_rr() loop. But as long as such =
a solution has not yet
been found that loop should stay in order to preserve fair handling of larg=
e
numbers of LUNs.

Bart.