557 int xen_blkbk_flush_diskcache(struct xenbus_transaction xbt,  in xen_blkbk_flush_diskcache()  argument
563 	err = xenbus_printf(xbt, dev->nodename, "feature-flush-cache",  in xen_blkbk_flush_diskcache()
571 static void xen_blkbk_discard(struct xenbus_transaction xbt, struct backend_info *be)  in xen_blkbk_discard()  argument
584 		err = xenbus_printf(xbt, dev->nodename,  in xen_blkbk_discard()
591 		err = xenbus_printf(xbt, dev->nodename,  in xen_blkbk_discard()
600 		err = xenbus_printf(xbt, dev->nodename,  in xen_blkbk_discard()
608 	err = xenbus_printf(xbt, dev->nodename, "feature-discard",  in xen_blkbk_discard()
614 int xen_blkbk_barrier(struct xenbus_transaction xbt,  in xen_blkbk_barrier()  argument
620 	err = xenbus_printf(xbt, dev->nodename, "feature-barrier",  in xen_blkbk_barrier()
892 	struct xenbus_transaction xbt;  in connect()  local
900 	err = xenbus_transaction_start(&xbt);  in connect()
907 	xen_blkbk_flush_diskcache(xbt, be, be->blkif->vbd.flush_support);  in connect()
909 	xen_blkbk_discard(xbt, be);  in connect()
911 	xen_blkbk_barrier(xbt, be, be->blkif->vbd.flush_support);  in connect()
913 	err = xenbus_printf(xbt, dev->nodename, "feature-persistent", "%u",  in connect()
921 	err = xenbus_printf(xbt, dev->nodename, "sectors", "%llu",  in connect()
930 	err = xenbus_printf(xbt, dev->nodename, "info", "%u",  in connect()
938 	err = xenbus_printf(xbt, dev->nodename, "sector-size", "%lu",  in connect()
946 	err = xenbus_printf(xbt, dev->nodename, "physical-sector-size", "%u",  in connect()
952 	err = xenbus_transaction_end(xbt, 0);  in connect()
965 	xenbus_transaction_end(xbt, 1);  in connect()