cfq-iosched: Don't group_idle if cfqq has big thinktime
There is no point in idling on a cfq group if the only cfq queue that is there has too big thinktime. Signed-off-by:Jan Kara <jack@suse.com> Acked-by:
Tejun Heo <tj@kernel.org> Signed-off-by:
Jens Axboe <axboe@fb.com>
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