svc_print_addr
svc_print_addr(rqstp, buf, sizeof(buf)));
svc_print_addr(rqstp, buf, sizeof(buf)));
svc_print_addr(rqstp, buf, sizeof(buf)));
char * svc_print_addr(struct svc_rqst *, char *, size_t);
dprintk("svc: %s: %pV", svc_print_addr(rqstp, buf, sizeof(buf)), &vaf);
EXPORT_SYMBOL_GPL(svc_print_addr);