From 27d28098203579f0735ba6400641e9be94eb12f8 Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Sat, 21 Apr 2007 19:40:55 +0000
Subject: sync with mit plan 9 version

---
 src/cmd/venti/srv/dcache.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

(limited to 'src/cmd/venti/srv/dcache.c')

diff --git a/src/cmd/venti/srv/dcache.c b/src/cmd/venti/srv/dcache.c
index 4d6d0865..4f87e77e 100644
--- a/src/cmd/venti/srv/dcache.c
+++ b/src/cmd/venti/srv/dcache.c
@@ -169,10 +169,23 @@ raproc(void *v)
 		b = _getdblock(ra.part, ra.addr, OREAD, 2);
 		putdblock(b);
 	}
-}	
+}
 
+/*
+ * We do readahead a whole arena at a time now,
+ * so dreadahead is a no-op.  The original implementation
+ * is in unused_dreadahead below.
+ */
 void
 dreadahead(Part *part, u64int addr, int miss)
+{
+	USED(part);
+	USED(addr);
+	USED(miss);
+}
+
+void
+unused_dreadahead(Part *part, u64int addr, int miss)
 {
 	Ra ra;
 	static struct {
@@ -185,7 +198,6 @@ dreadahead(Part *part, u64int addr, int miss)
 		int dir;
 	} lastra;
 
-return;
 	if(miss){
 		if(lastmiss.part==part && lastmiss.addr==addr-dcache.size){
 		XRa:
-- 
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