From 02d3c98d74e49385c7ef26245e05739fe6c47df7 Mon Sep 17 00:00:00 2001
From: Jeffrey Altman <jaltman@your-file-system.com>
Date: Thu, 1 Sep 2011 09:51:06 -0400
Subject: [PATCH] Windows: buf_SetDirty do nothing if length is zero

Reviewed-on: http://gerrit.openafs.org/5358
Reviewed-by: Jeffrey Altman <jaltman@openafs.org>
Tested-by: Jeffrey Altman <jaltman@openafs.org>
(cherry picked from commit 7dcc4766377b99c60db60328c21a3990db132268)

Change-Id: I30dc0f218df56e6e38fe6ce3736a5450b7036e51
Reviewed-on: http://gerrit.openafs.org/6024
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Jeffrey Altman <jaltman@secure-endpoints.com>
Tested-by: Jeffrey Altman <jaltman@secure-endpoints.com>
---
 src/WINNT/afsd/cm_buf.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/WINNT/afsd/cm_buf.c b/src/WINNT/afsd/cm_buf.c
index eca1ecf8d..21523227a 100644
--- a/src/WINNT/afsd/cm_buf.c
+++ b/src/WINNT/afsd/cm_buf.c
@@ -1348,6 +1348,9 @@ void buf_SetDirty(cm_buf_t *bp, afs_uint32 offset, afs_uint32 length, cm_user_t
     osi_assertx(bp->magic == CM_BUF_MAGIC, "invalid cm_buf_t magic");
     osi_assertx(bp->refCount > 0, "cm_buf_t refcount 0");
 
+    if (length == 0)
+        return;
+
     if (bp->flags & CM_BUF_DIRTY) {
 
 	osi_Log1(buf_logp, "buf_SetDirty 0x%p already dirty", bp);
-- 
2.39.5