From 7f504091ecf0cec2316b9c5fa079836d56130624 Mon Sep 17 00:00:00 2001
From: Pawel Dziepak <pdziepak@quarnos.org>
Date: Fri, 10 Aug 2012 02:56:44 +0200
Subject: [PATCH] nfs4: Fix directory cache revalidation when cache invalid

---
 src/add-ons/kernel/file_systems/nfs4/DirectoryCache.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/add-ons/kernel/file_systems/nfs4/DirectoryCache.cpp b/src/add-ons/kernel/file_systems/nfs4/DirectoryCache.cpp
index 909f62956a..e7062c0567 100644
--- a/src/add-ons/kernel/file_systems/nfs4/DirectoryCache.cpp
+++ b/src/add-ons/kernel/file_systems/nfs4/DirectoryCache.cpp
@@ -185,6 +185,11 @@ DirectoryCache::Revalidate()
 	}
 
 	DirectoryCacheSnapshot* oldSnapshot = fDirectoryCache;
+	if (oldSnapshot == NULL) {
+		Trash();
+		return B_ERROR;
+	}
+
 	oldSnapshot->AcquireReference();
 
 	Trash();
@@ -194,7 +199,7 @@ DirectoryCache::Revalidate()
 		fAttrDir);
 	if (result != B_OK) {
 		oldSnapshot->ReleaseReference();
-		return B_OK;
+		return B_ERROR;
 	}
 	newSnapshot->AcquireReference();