From 713beb6d423144456a458c7bb984a29ae70b3a9e Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@felloff.net>
Date: Tue, 16 Aug 2016 18:06:22 +0200
Subject: [PATCH] devmnt: fix mistake in mntrahread()

mntrahread() had the prefetch window condition wrong so
it would very agressively prefetch ignoring the prefetch
window.
---
 sys/src/9/port/devmnt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/src/9/port/devmnt.c b/sys/src/9/port/devmnt.c
index e6bbd02dc..96b627eb6 100644
--- a/sys/src/9/port/devmnt.c
+++ b/sys/src/9/port/devmnt.c
@@ -897,7 +897,7 @@ mntrahread(Mntrah *rah, Chan *c, uchar *buf, long len, vlong off)
 	if(rah->seq >= 2*c->iounit){
 		w = (off / c->iounit) * c->iounit;
 		e = w + rah->seq;
-		for(o = w; w < e; o += c->iounit){
+		for(o = w; o < e; o += c->iounit){
 			if(rahfindrpc(rah, o) != nil)
 				continue;