transport_backend_register
return transport_backend_register(&fileio_ops);
EXPORT_SYMBOL(transport_backend_register);
return transport_backend_register(&iblock_ops);
return transport_backend_register(&pscsi_ops);
return transport_backend_register(&rd_mcp_ops);
ret = transport_backend_register(&tcmu_ops);
int transport_backend_register(const struct target_backend_ops *);