blk_rq_map_sg
buf->sg_cnt = blk_rq_map_sg(req, buf->sg_list);
command->scatter_ents = blk_rq_map_sg(rq, command->sg);
sg_cnt = blk_rq_map_sg(rq, iu->sgt.sgl);
nsg = blk_rq_map_sg(req, sg);
return blk_rq_map_sg(req, vbr->sg_table.sgl);
num_sg = blk_rq_map_sg(req, rinfo->shadow[id].sg);
blk_rq_map_sg(req, sg);
msb->seg_count = blk_rq_map_sg(msb->block_req, msb->req_sg);
return blk_rq_map_sg(req, mqrq->sg);
blk_rq_map_sg(req, pdu->usgl.sg);
iod->nents = blk_rq_map_sg(req, iod->sg);
op->nents = blk_rq_map_sg(rq, freq->sg_table.sgl);
req->data_sgl.nents = blk_rq_map_sg(rq, req->data_sgl.sg_table.sgl);
iod->req.sg_cnt = blk_rq_map_sg(req, iod->sg_table.sgl);