bfq_stat_init
bfq_stat_init(&stats->time, gfp) ||
bfq_stat_init(&stats->avg_queue_size_sum, gfp) ||
bfq_stat_init(&stats->avg_queue_size_samples, gfp) ||
bfq_stat_init(&stats->dequeue, gfp) ||
bfq_stat_init(&stats->group_wait_time, gfp) ||
bfq_stat_init(&stats->idle_time, gfp) ||
bfq_stat_init(&stats->empty_time, gfp))