From 0ec5291c703655f9c1132e74ff93fc1d850b617b Mon Sep 17 00:00:00 2001
From: Bill Zissimopoulos <billziss@navimatics.com>
Date: Sun, 7 Feb 2016 16:55:08 -0800
Subject: [PATCH] sys: IRP_MJ_QUERY_INFORMATION: correctly retry IRP completion

---
 src/sys/fileinfo.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/sys/fileinfo.c b/src/sys/fileinfo.c
index 17e98f79..acdb6b00 100644
--- a/src/sys/fileinfo.c
+++ b/src/sys/fileinfo.c
@@ -478,6 +478,7 @@ NTSTATUS FspFsvolQueryInformationComplete(
     FSP_FSCTL_TRANSACT_REQ *Request = FspIrpRequest(Irp);
     FSP_FSCTL_FILE_INFO FileInfoBuf;
     const FSP_FSCTL_FILE_INFO *FileInfo;
+    BOOLEAN Success;
 
     if (0 != FspIopRequestContext(Request, RequestFileNode))
     {
@@ -487,9 +488,14 @@ NTSTATUS FspFsvolQueryInformationComplete(
         FspFileNodeReleaseOwner(FileNode, Full, Request);
     }
 
-    if (!FspFileNodeTryAcquireExclusive(FileNode, Main))
+    Success = DEBUGRANDTEST(90, TRUE) && FspFileNodeTryAcquireExclusive(FileNode, Main);
+    if (!Success)
+    {
         FspIopRetryCompleteIrp(Irp, Response, &Result);
 
+        return Result;
+    }
+
     if (!FspFileNodeTrySetFileInfo(FileNode, FileObject, &Response->Rsp.QueryInformation.FileInfo,
         (ULONG)(UINT_PTR)FspIopRequestContext(Request, RequestInfoChangeNumber)))
     {