Better logging in vtrpc, publish cache statistics.
diff --git a/include/venti.h b/include/venti.h
index e1bb232..e09ad17 100644
--- a/include/venti.h
+++ b/include/venti.h
@@ -369,6 +369,7 @@
 
 /* client */
 Packet *vtrpc(VtConn*, Packet*);
+Packet *_vtrpc(VtConn*, Packet*, VtFcall*);
 void vtrecvproc(void*);	/* VtConn* */
 void vtsendproc(void*);	/* VtConn* */
 
@@ -428,6 +429,8 @@
 VtBlock *vtblockcopy(VtBlock*);
 void vtblockduplock(VtBlock*);
 
+extern int vtcachencopy, vtcachenread, vtcachenwrite;
+
 /*
  * Hash tree file tree.
  */