bio_list_merge
bio_list_merge(&bs->rescue_list, &punt);
bio_list_merge(&bio_list_on_stack[0], &lower);
bio_list_merge(&bio_list_on_stack[0], &same);
bio_list_merge(&bio_list_on_stack[0], &bio_list_on_stack[1]);
bio_list_merge(&info->bio_list, &merge_bio);
bio_list_merge(inmates, &cell->bios);
bio_list_merge(inmates, &cell->bios);
bio_list_merge(&bios, &bio_completions);
bio_list_merge(&clone->deferred_bios, &normal_bios);
bio_list_merge(&clone->deferred_flush_bios, &flush_bios);
bio_list_merge(&ms->writes, &requeue);
bio_list_merge(&ms->failures, &sync);
bio_list_merge(&bios, &tc->deferred_bio_list);
bio_list_merge(&bios, &tc->deferred_bio_list);
bio_list_merge(&tc->deferred_bio_list, &bios);
bio_list_merge(&bios, &pool->deferred_flush_bios);
bio_list_merge(&bio_completions, &pool->deferred_flush_completions);
bio_list_merge(&bios, &bio_completions);
bio_list_merge(&tc->deferred_bio_list, &tc->retry_on_resume_list);
bio_list_merge(&tc->deferred_bio_list, &bios);
bio_list_merge(&prev_vio->bios_merged, &vio->bios_merged);
bio_list_merge(&conf->pending_bio_list, &plug->pending);
bio_list_merge(&conf->pending_bio_list, &plug->pending);
bio_list_merge(list, &data->bios);
bio_list_merge(&ent->bios, bios);
bio_list_merge(bl, bl2);