diff --git a/src/sys/callbacks.c b/src/sys/callbacks.c
index 5fab21b3..f84553d9 100644
--- a/src/sys/callbacks.c
+++ b/src/sys/callbacks.c
@@ -116,7 +116,9 @@ NTSTATUS FspAcquireForModWrite(
     Success = FspFileNodeTryAcquireExclusiveF(FileNode, FspFileNodeAcquireFull, FALSE);
     if (Success)
     {
-        *ResourceToRelease = FileNode->Header.PagingIoResource;
+        *ResourceToRelease = 0 == FileNode->MainFileNode ?
+            FileNode->Header.PagingIoResource :
+            FileNode->MainFileNode->Header.PagingIoResource;
         Result = STATUS_SUCCESS;
     }
     else
diff --git a/src/sys/file.c b/src/sys/file.c
index 374aadaf..c0b0537e 100644
--- a/src/sys/file.c
+++ b/src/sys/file.c
@@ -240,6 +240,9 @@ VOID FspFileNodeAcquireSharedF(FSP_FILE_NODE *FileNode, ULONG Flags)
 {
     PAGED_CODE();
 
+    if (0 != FileNode->MainFileNode)
+        FileNode = FileNode->MainFileNode;
+
     FSP_FILE_NODE_GET_FLAGS();
     FSP_FILE_NODE_ASSERT_FLAGS_CLR();
 
@@ -256,6 +259,9 @@ BOOLEAN FspFileNodeTryAcquireSharedF(FSP_FILE_NODE *FileNode, ULONG Flags, BOOLE
 {
     PAGED_CODE();
 
+    if (0 != FileNode->MainFileNode)
+        FileNode = FileNode->MainFileNode;
+
     FSP_FILE_NODE_GET_FLAGS();
     FSP_FILE_NODE_ASSERT_FLAGS_CLR();
 
@@ -289,6 +295,9 @@ VOID FspFileNodeAcquireExclusiveF(FSP_FILE_NODE *FileNode, ULONG Flags)
 {
     PAGED_CODE();
 
+    if (0 != FileNode->MainFileNode)
+        FileNode = FileNode->MainFileNode;
+
     FSP_FILE_NODE_GET_FLAGS();
     FSP_FILE_NODE_ASSERT_FLAGS_CLR();
 
@@ -305,6 +314,9 @@ BOOLEAN FspFileNodeTryAcquireExclusiveF(FSP_FILE_NODE *FileNode, ULONG Flags, BO
 {
     PAGED_CODE();
 
+    if (0 != FileNode->MainFileNode)
+        FileNode = FileNode->MainFileNode;
+
     FSP_FILE_NODE_GET_FLAGS();
     FSP_FILE_NODE_ASSERT_FLAGS_CLR();
 
@@ -338,6 +350,9 @@ VOID FspFileNodeConvertExclusiveToSharedF(FSP_FILE_NODE *FileNode, ULONG Flags)
 {
     PAGED_CODE();
 
+    if (0 != FileNode->MainFileNode)
+        FileNode = FileNode->MainFileNode;
+
     FSP_FILE_NODE_GET_FLAGS();
 
     if (Flags & FspFileNodeAcquirePgio)
@@ -351,6 +366,9 @@ VOID FspFileNodeSetOwnerF(FSP_FILE_NODE *FileNode, ULONG Flags, PVOID Owner)
 {
     PAGED_CODE();
 
+    if (0 != FileNode->MainFileNode)
+        FileNode = FileNode->MainFileNode;
+
     FSP_FILE_NODE_GET_FLAGS();
 
     Owner = (PVOID)((UINT_PTR)Owner | 3);
@@ -366,6 +384,9 @@ VOID FspFileNodeReleaseF(FSP_FILE_NODE *FileNode, ULONG Flags)
 {
     PAGED_CODE();
 
+    if (0 != FileNode->MainFileNode)
+        FileNode = FileNode->MainFileNode;
+
     FSP_FILE_NODE_GET_FLAGS();
     FSP_FILE_NODE_ASSERT_FLAGS_SET();
 
@@ -382,6 +403,9 @@ VOID FspFileNodeReleaseOwnerF(FSP_FILE_NODE *FileNode, ULONG Flags, PVOID Owner)
 {
     PAGED_CODE();
 
+    if (0 != FileNode->MainFileNode)
+        FileNode = FileNode->MainFileNode;
+
     FSP_FILE_NODE_GET_FLAGS();
     FSP_FILE_NODE_ASSERT_FLAGS_SET();