From f33bac9ade647ca923e855fe29cd282e882d1e94 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Thu, 15 Apr 1993 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1993-04-15

---
 port/devbit.c | 2 +-
 port/fault.c  | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/port/devbit.c b/port/devbit.c
index 7cd3be9474f515c512ff77c7e037079417a957d7..56c68eff005aebe2c97b4db78ced04850a5d2f9d 100644
--- a/port/devbit.c
+++ b/port/devbit.c
@@ -732,7 +732,7 @@ bitread(Chan *c, void *va, long n, ulong offset)
 			error(Ebadblt);
 		for(j = 0; j < nw; j++){
 			if(bit.mid == 0){
-				getcolor(flipping? ~j : j, &rv, &gv, &bv);
+				getcolor(flipping? nw-j-1 : j, &rv, &gv, &bv);
 			}else{
 				rv = j;
 				for(off = 32-l; off > 0; off -= l)
diff --git a/port/fault.c b/port/fault.c
index 89fe9940c5b2297399c6f83c519b8eac7ea0385d..b378d759e52eab1659798ef541ab8e6181d21bec 100644
--- a/port/fault.c
+++ b/port/fault.c
@@ -80,6 +80,11 @@ fixfault(Segment *s, ulong addr, int read, int doputmmu)
 		if(pagedout(*pg))
 			pio(s, addr, soff, pg);
 
+		lkp = *pg;
+		lock(lkp);
+		if(lkp->image)     
+			duppage(lkp);	
+		unlock(lkp);
 		goto done;
 
 	case SG_BSS: