489 int xen_blkbk_flush_diskcache(struct xenbus_transaction xbt,  in xen_blkbk_flush_diskcache()  argument
495 	err = xenbus_printf(xbt, dev->nodename, "feature-flush-cache",  in xen_blkbk_flush_diskcache()
503 static void xen_blkbk_discard(struct xenbus_transaction xbt, struct backend_info *be)  in xen_blkbk_discard()  argument
518 		err = xenbus_printf(xbt, dev->nodename,  in xen_blkbk_discard()
525 		err = xenbus_printf(xbt, dev->nodename,  in xen_blkbk_discard()
534 		err = xenbus_printf(xbt, dev->nodename,  in xen_blkbk_discard()
542 	err = xenbus_printf(xbt, dev->nodename, "feature-discard",  in xen_blkbk_discard()
547 int xen_blkbk_barrier(struct xenbus_transaction xbt,  in xen_blkbk_barrier()  argument
553 	err = xenbus_printf(xbt, dev->nodename, "feature-barrier",  in xen_blkbk_barrier()
779 	struct xenbus_transaction xbt;  in connect()  local
787 	err = xenbus_transaction_start(&xbt);  in connect()
794 	xen_blkbk_flush_diskcache(xbt, be, be->blkif->vbd.flush_support);  in connect()
796 	xen_blkbk_discard(xbt, be);  in connect()
798 	xen_blkbk_barrier(xbt, be, be->blkif->vbd.flush_support);  in connect()
800 	err = xenbus_printf(xbt, dev->nodename, "feature-persistent", "%u", 1);  in connect()
806 	err = xenbus_printf(xbt, dev->nodename, "feature-max-indirect-segments", "%u",  in connect()
812 	err = xenbus_printf(xbt, dev->nodename, "sectors", "%llu",  in connect()
821 	err = xenbus_printf(xbt, dev->nodename, "info", "%u",  in connect()
829 	err = xenbus_printf(xbt, dev->nodename, "sector-size", "%lu",  in connect()
837 	err = xenbus_printf(xbt, dev->nodename, "physical-sector-size", "%u",  in connect()
843 	err = xenbus_transaction_end(xbt, 0);  in connect()
856 	xenbus_transaction_end(xbt, 1);  in connect()