blk_mq_alloc_map_and_rqs
et->tags[0] = blk_mq_alloc_map_and_rqs(set, BLK_MQ_NO_HCTX_IDX,
et->tags[i] = blk_mq_alloc_map_and_rqs(set, i,
set->tags[hctx_idx] = blk_mq_alloc_map_and_rqs(set, hctx_idx,
set->shared_tags = blk_mq_alloc_map_and_rqs(set,
new_tags[i] = blk_mq_alloc_map_and_rqs(set, i,
struct blk_mq_tags *blk_mq_alloc_map_and_rqs(struct blk_mq_tag_set *set,