.vs_proc = nfs4_callback_procedures1,
        .vs_xdrsize = NFS4_CALLBACK_XDRSIZE,
        .vs_dispatch = NULL,
-       .vs_hidden = 1,
+       .vs_hidden = true,
 };
 
 struct svc_version nfs4_callback_version4 = {
        .vs_proc = nfs4_callback_procedures1,
        .vs_xdrsize = NFS4_CALLBACK_XDRSIZE,
        .vs_dispatch = NULL,
-       .vs_hidden = 1,
+       .vs_hidden = true,
 };
 
                .vs_proc        = nfsd_acl_procedures2,
                .vs_dispatch    = nfsd_dispatch,
                .vs_xdrsize     = NFS3_SVC_XDRSIZE,
-               .vs_hidden      = 0,
 };
 
                .vs_proc        = nfsd_acl_procedures3,
                .vs_dispatch    = nfsd_dispatch,
                .vs_xdrsize     = NFS3_SVC_XDRSIZE,
-               .vs_hidden      = 0,
 };
 
 
                .vs_proc        = nfsd_procedures4,
                .vs_dispatch    = nfsd_dispatch,
                .vs_xdrsize     = NFS4_SVC_XDRSIZE,
-               .vs_rpcb_optnl  = 1,
+               .vs_rpcb_optnl  = true,
 };
 
 /*
 
        struct svc_procedure *  vs_proc;        /* per-procedure info */
        u32                     vs_xdrsize;     /* xdrsize needed for this version */
 
-       unsigned int            vs_hidden : 1,  /* Don't register with portmapper.
-                                                * Only used for nfsacl so far. */
-                               vs_rpcb_optnl:1;/* Don't care the result of register.
-                                                * Only used for nfsv4. */
+       /* Don't register with rpcbind */
+       bool                    vs_hidden;
+
+       /* Don't care if the rpcbind registration fails */
+       bool                    vs_rpcb_optnl;
 
        /* Override dispatch function (e.g. when caching replies).
         * A return value of 0 means drop the request. 
 
                for (i = 0; i < progp->pg_nvers; i++) {
                        if (progp->pg_vers[i] == NULL)
                                continue;
-                       if (progp->pg_vers[i]->vs_hidden == 0)
+                       if (!progp->pg_vers[i]->vs_hidden)
                                return 1;
                }
        }