ibt_sync_mr
status = ibt_sync_mr(ia_rp->ia_hca_hdl, mrs, args.mrs_numseg);
status = ibt_sync_mr(hca->hca_hdl, &mr_segment, 1);
ibt_status_t ibt_sync_mr(ibt_hca_hdl_t hca_hdl, ibt_mr_sync_t *mr_segments,