sbitmap_for_each_set
sbitmap_for_each_set(&bt->sb, bt_iter, &iter_data);
sbitmap_for_each_set(&bt->sb, bt_tags_iter, &iter_data);
sbitmap_for_each_set(&hctx->ctx_map, flush_busy_ctx, &data);
sbitmap_for_each_set(&khd->kcq_map[sched_domain],