backend_watch 24 drivers/block/xen-blkback/xenbus.c struct xenbus_watch backend_watch; backend_watch 511 drivers/block/xen-blkback/xenbus.c if (be->backend_watch.node) { backend_watch 512 drivers/block/xen-blkback/xenbus.c unregister_xenbus_watch(&be->backend_watch); backend_watch 513 drivers/block/xen-blkback/xenbus.c kfree(be->backend_watch.node); backend_watch 514 drivers/block/xen-blkback/xenbus.c be->backend_watch.node = NULL; backend_watch 647 drivers/block/xen-blkback/xenbus.c err = xenbus_watch_pathfmt(dev, &be->backend_watch, backend_changed, backend_watch 682 drivers/block/xen-blkback/xenbus.c = container_of(watch, struct backend_info, backend_watch);