blkfront_driver 2650 drivers/block/xen-blkfront.c static struct xenbus_driver blkfront_driver = { blkfront_driver 2748 drivers/block/xen-blkfront.c ret = xenbus_register_frontend(&blkfront_driver); blkfront_driver 2763 drivers/block/xen-blkfront.c xenbus_unregister_driver(&blkfront_driver);