diff --git a/src/system/kernel/vm/VMDeviceCache.cpp b/src/system/kernel/vm/VMDeviceCache.cpp
index 8231461f3c..ef771bbc0b 100644
--- a/src/system/kernel/vm/VMDeviceCache.cpp
+++ b/src/system/kernel/vm/VMDeviceCache.cpp
@@ -41,3 +41,10 @@ VMDeviceCache::Write(off_t offset, const iovec *vecs, size_t count,
 	// no place to write, this will cause the page daemon to skip this store
 	return B_OK;
 }
+
+
+status_t
+VMDeviceCache::Fault(struct VMAddressSpace* addressSpace, off_t offset)
+{
+	return B_BAD_ADDRESS;
+}
diff --git a/src/system/kernel/vm/VMDeviceCache.h b/src/system/kernel/vm/VMDeviceCache.h
index cb6b5f2e31..5090fa4f51 100644
--- a/src/system/kernel/vm/VMDeviceCache.h
+++ b/src/system/kernel/vm/VMDeviceCache.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2008-2009, Ingo Weinhold, ingo_weinhold@gmx.de.
+ * Copyright 2008-2010, Ingo Weinhold, ingo_weinhold@gmx.de.
  * Copyright 2005-2007, Axel Dörfler, axeld@pinc-software.de.
  * Distributed under the terms of the MIT License.
  *
@@ -24,6 +24,9 @@ public:
 	virtual	status_t	Write(off_t offset, const iovec *vecs, size_t count,
 							uint32 flags, size_t *_numBytes);
 
+	virtual	status_t			Fault(struct VMAddressSpace* addressSpace,
+									off_t offset);
+
 private:
 	addr_t	fBaseAddress;
 };
diff --git a/src/system/kernel/vm/VMNullCache.cpp b/src/system/kernel/vm/VMNullCache.cpp
index 86079ff611..8e86cf36ac 100644
--- a/src/system/kernel/vm/VMNullCache.cpp
+++ b/src/system/kernel/vm/VMNullCache.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright 2008, Ingo Weinhold, ingo_weinhold@gmx.de.
+ * Copyright 2008-2010, Ingo Weinhold, ingo_weinhold@gmx.de.
  * Distributed under the terms of the MIT License.
  */
 
@@ -11,3 +11,10 @@ VMNullCache::Init(uint32 allocationFlags)
 {
 	return VMCache::Init(CACHE_TYPE_NULL, allocationFlags);
 }
+
+
+status_t
+VMNullCache::Fault(struct VMAddressSpace* addressSpace, off_t offset)
+{
+	return B_BAD_ADDRESS;
+}
diff --git a/src/system/kernel/vm/VMNullCache.h b/src/system/kernel/vm/VMNullCache.h
index 15c1a08364..5484876335 100644
--- a/src/system/kernel/vm/VMNullCache.h
+++ b/src/system/kernel/vm/VMNullCache.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2008-2009, Ingo Weinhold, ingo_weinhold@gmx.de.
+ * Copyright 2008-2010, Ingo Weinhold, ingo_weinhold@gmx.de.
  * Copyright 2005-2007, Axel Dörfler, axeld@pinc-software.de.
  * Distributed under the terms of the MIT License.
  *
@@ -15,7 +15,10 @@
 
 class VMNullCache : public VMCache {
 public:
-	status_t	Init(uint32 allocationFlags);
+			status_t			Init(uint32 allocationFlags);
+
+	virtual	status_t			Fault(struct VMAddressSpace* addressSpace,
+									off_t offset);
 };