cfq-iosched: minor cleanups
* Some were accessing cic->cfqq[] directly. Always use cic_to_cfqq() and cic_set_cfqq(). * check_ioprio_changed() doesn't need to verify cfq_get_queue()'s return for NULL. It's always non-NULL. Simplify accordingly. This patch doesn't cause any functional changes. Signed-off-by: NTejun Heo <tj@kernel.org> Acked-by: NJeff Moyer <jmoyer@redhat.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Arianna Avanzini <avanzini.arianna@gmail.com> Signed-off-by: NJens Axboe <axboe@fb.com>
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