453 int xen_blkbk_flush_diskcache(struct xenbus_transaction xbt,  in xen_blkbk_flush_diskcache()  argument
459 	err = xenbus_printf(xbt, dev->nodename, "feature-flush-cache",  in xen_blkbk_flush_diskcache()
467 static void xen_blkbk_discard(struct xenbus_transaction xbt, struct backend_info *be)  in xen_blkbk_discard()  argument
482 		err = xenbus_printf(xbt, dev->nodename,  in xen_blkbk_discard()
489 		err = xenbus_printf(xbt, dev->nodename,  in xen_blkbk_discard()
498 		err = xenbus_printf(xbt, dev->nodename,  in xen_blkbk_discard()
506 	err = xenbus_printf(xbt, dev->nodename, "feature-discard",  in xen_blkbk_discard()
511 int xen_blkbk_barrier(struct xenbus_transaction xbt,  in xen_blkbk_barrier()  argument
517 	err = xenbus_printf(xbt, dev->nodename, "feature-barrier",  in xen_blkbk_barrier()
748 	struct xenbus_transaction xbt;  in connect()  local
756 	err = xenbus_transaction_start(&xbt);  in connect()
763 	xen_blkbk_flush_diskcache(xbt, be, be->blkif->vbd.flush_support);  in connect()
765 	xen_blkbk_discard(xbt, be);  in connect()
767 	xen_blkbk_barrier(xbt, be, be->blkif->vbd.flush_support);  in connect()
769 	err = xenbus_printf(xbt, dev->nodename, "feature-persistent", "%u", 1);  in connect()
775 	err = xenbus_printf(xbt, dev->nodename, "feature-max-indirect-segments", "%u",  in connect()
781 	err = xenbus_printf(xbt, dev->nodename, "sectors", "%llu",  in connect()
790 	err = xenbus_printf(xbt, dev->nodename, "info", "%u",  in connect()
798 	err = xenbus_printf(xbt, dev->nodename, "sector-size", "%lu",  in connect()
806 	err = xenbus_printf(xbt, dev->nodename, "physical-sector-size", "%u",  in connect()
812 	err = xenbus_transaction_end(xbt, 0);  in connect()
825 	xenbus_transaction_end(xbt, 1);  in connect()