From 20493b9e88b822f55beddeda176152bca26aa037 Mon Sep 17 00:00:00 2001
From: Olga Kornievskaia <aglo@citi.umich.edu>
Date: Thu, 14 Apr 2011 19:50:25 -0400
Subject: [PATCH] turning off caching if WRITE_THROUGH or NO_BUFFERING is set

---
 sys/nfs41_driver.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sys/nfs41_driver.c b/sys/nfs41_driver.c
index 57b4abc..5b1a06d 100644
--- a/sys/nfs41_driver.c
+++ b/sys/nfs41_driver.c
@@ -2951,6 +2951,12 @@ NTSTATUS nfs41_Create(
 #endif
     }
 
+    if (params.CreateOptions & FILE_WRITE_THROUGH ||
+        params.CreateOptions & FILE_NO_INTERMEDIATE_BUFFERING) {
+            DbgP("Disable caching\n");
+            SrvOpen->BufferingFlags |= FCB_STATE_DISABLE_LOCAL_BUFFERING;
+    }
+
     if (params.CreateOptions & FILE_DELETE_ON_CLOSE) {
         DbgP("We need to delete this file on close\n");
         nfs41_fcb->StandardInfo.DeletePending = TRUE;