552 int xen_blkbk_flush_diskcache(struct xenbus_transaction xbt,  in xen_blkbk_flush_diskcache()  argument
558 	err = xenbus_printf(xbt, dev->nodename, "feature-flush-cache",  in xen_blkbk_flush_diskcache()
566 static void xen_blkbk_discard(struct xenbus_transaction xbt, struct backend_info *be)  in xen_blkbk_discard()  argument
578 		err = xenbus_printf(xbt, dev->nodename,  in xen_blkbk_discard()
585 		err = xenbus_printf(xbt, dev->nodename,  in xen_blkbk_discard()
594 		err = xenbus_printf(xbt, dev->nodename,  in xen_blkbk_discard()
602 	err = xenbus_printf(xbt, dev->nodename, "feature-discard",  in xen_blkbk_discard()
608 int xen_blkbk_barrier(struct xenbus_transaction xbt,  in xen_blkbk_barrier()  argument
614 	err = xenbus_printf(xbt, dev->nodename, "feature-barrier",  in xen_blkbk_barrier()
886 	struct xenbus_transaction xbt;  in connect()  local
894 	err = xenbus_transaction_start(&xbt);  in connect()
901 	xen_blkbk_flush_diskcache(xbt, be, be->blkif->vbd.flush_support);  in connect()
903 	xen_blkbk_discard(xbt, be);  in connect()
905 	xen_blkbk_barrier(xbt, be, be->blkif->vbd.flush_support);  in connect()
907 	err = xenbus_printf(xbt, dev->nodename, "feature-persistent", "%u",  in connect()
915 	err = xenbus_printf(xbt, dev->nodename, "sectors", "%llu",  in connect()
924 	err = xenbus_printf(xbt, dev->nodename, "info", "%u",  in connect()
932 	err = xenbus_printf(xbt, dev->nodename, "sector-size", "%lu",  in connect()
940 	err = xenbus_printf(xbt, dev->nodename, "physical-sector-size", "%u",  in connect()
947 	err = xenbus_transaction_end(xbt, 0);  in connect()
960 	xenbus_transaction_end(xbt, 1);  in connect()