639 static int scsi_alloc_sgtable(struct scsi_data_buffer *sdb, int nents,  in scsi_alloc_sgtable()  argument
646 	ret = __sg_alloc_table(&sdb->table, nents, SCSI_MAX_SG_SEGMENTS,  in scsi_alloc_sgtable()
649 		__sg_free_table(&sdb->table, SCSI_MAX_SG_SEGMENTS,  in scsi_alloc_sgtable()
655 static void scsi_free_sgtable(struct scsi_data_buffer *sdb)  in scsi_free_sgtable()  argument
657 	__sg_free_table(&sdb->table, SCSI_MAX_SG_SEGMENTS, scsi_sg_free);  in scsi_free_sgtable()
663 	if (cmd->sdb.table.nents)  in __scsi_release_buffers()
664 		scsi_free_sgtable(&cmd->sdb);  in __scsi_release_buffers()
666 	memset(&cmd->sdb, 0, sizeof(cmd->sdb));  in __scsi_release_buffers()
1012 static int scsi_init_sgtable(struct request *req, struct scsi_data_buffer *sdb,  in scsi_init_sgtable()  argument
1020 	if (unlikely(scsi_alloc_sgtable(sdb, req->nr_phys_segments,  in scsi_init_sgtable()
1031 	count = blk_rq_map_sg(req->q, req, sdb->table.sgl);  in scsi_init_sgtable()
1032 	BUG_ON(count > sdb->table.nents);  in scsi_init_sgtable()
1033 	sdb->table.nents = count;  in scsi_init_sgtable()
1034 	sdb->length = blk_rq_bytes(req);  in scsi_init_sgtable()
1053 	int error = scsi_init_sgtable(rq, &cmd->sdb, gfp_mask);  in scsi_init_io()
1155 		memset(&cmd->sdb, 0, sizeof(cmd->sdb));  in scsi_setup_blk_pc_cmnd()