584 static void scsi_free_sgtable(struct scsi_data_buffer *sdb, bool mq)  in scsi_free_sgtable()  argument
586 	if (mq && sdb->table.orig_nents <= SCSI_MAX_SG_SEGMENTS)  in scsi_free_sgtable()
588 	__sg_free_table(&sdb->table, SCSI_MAX_SG_SEGMENTS, mq, scsi_sg_free);  in scsi_free_sgtable()
591 static int scsi_alloc_sgtable(struct scsi_data_buffer *sdb, int nents, bool mq)  in scsi_alloc_sgtable()  argument
600 			sdb->table.nents = sdb->table.orig_nents = nents;  in scsi_alloc_sgtable()
601 			sg_init_table(sdb->table.sgl, nents);  in scsi_alloc_sgtable()
604 		first_chunk = sdb->table.sgl;  in scsi_alloc_sgtable()
607 	ret = __sg_alloc_table(&sdb->table, nents, SCSI_MAX_SG_SEGMENTS,  in scsi_alloc_sgtable()
610 		scsi_free_sgtable(sdb, mq);  in scsi_alloc_sgtable()
626 	if (cmd->sdb.table.nents)  in scsi_mq_free_sgtables()
627 		scsi_free_sgtable(&cmd->sdb, true);  in scsi_mq_free_sgtables()
669 	if (cmd->sdb.table.nents)  in scsi_release_buffers()
670 		scsi_free_sgtable(&cmd->sdb, false);  in scsi_release_buffers()
672 	memset(&cmd->sdb, 0, sizeof(cmd->sdb));  in scsi_release_buffers()
1082 static int scsi_init_sgtable(struct request *req, struct scsi_data_buffer *sdb)  in scsi_init_sgtable()  argument
1089 	if (unlikely(scsi_alloc_sgtable(sdb, req->nr_phys_segments,  in scsi_init_sgtable()
1097 	count = blk_rq_map_sg(req->q, req, sdb->table.sgl);  in scsi_init_sgtable()
1098 	BUG_ON(count > sdb->table.nents);  in scsi_init_sgtable()
1099 	sdb->table.nents = count;  in scsi_init_sgtable()
1100 	sdb->length = blk_rq_bytes(req);  in scsi_init_sgtable()
1124 	error = scsi_init_sgtable(rq, &cmd->sdb);  in scsi_init_io()
1237 		memset(&cmd->sdb, 0, sizeof(cmd->sdb));  in scsi_setup_blk_pc_cmnd()
1931 	cmd->sdb.table.sgl = sg;  in scsi_mq_prep_fn()