From 6a3bbf24e012e4985b97ca4d79604c28fe0133d7 Mon Sep 17 00:00:00 2001
From: David Quintana <gigaherz@gmail.com>
Date: Fri, 24 Nov 2017 18:15:42 +0100
Subject: [PATCH] Revert "[CDFS_NEW] Use CdAcquireForCreateSection from the old
 driver in place of the newer CdFilterCallbackAcquireForCreateSection."

This reverts commit 8410d0327522b51be9926994ce2ec0263d36310f.
---
 drivers/filesystems/cdfs_new/cdinit.c   |  6 ---
 drivers/filesystems/cdfs_new/cdprocs.h  |  8 ----
 drivers/filesystems/cdfs_new/resrcsup.c | 54 -------------------------
 3 files changed, 68 deletions(-)

diff --git a/drivers/filesystems/cdfs_new/cdinit.c b/drivers/filesystems/cdfs_new/cdinit.c
index d9c96db04fa..871419ac575 100755
--- a/drivers/filesystems/cdfs_new/cdinit.c
+++ b/drivers/filesystems/cdfs_new/cdinit.c
@@ -191,9 +191,7 @@ Return Value:
                    sizeof(FS_FILTER_CALLBACKS) );
 
     FilterCallbacks.SizeOfFsFilterCallbacks = sizeof(FS_FILTER_CALLBACKS);
-#ifndef __REACTOS__
     FilterCallbacks.PreAcquireForSectionSynchronization = CdFilterCallbackAcquireForCreateSection;
-#endif
 
     Status = FsRtlRegisterFileSystemFilterCallbacks( DriverObject,
                                                      &FilterCallbacks );
@@ -359,15 +357,11 @@ Return Value:
     CdFastIoDispatch.FastIoUnlockSingle =      CdFastUnlockSingle;       //  UnlockSingle
     CdFastIoDispatch.FastIoUnlockAll =         CdFastUnlockAll;          //  UnlockAll
     CdFastIoDispatch.FastIoUnlockAllByKey =    CdFastUnlockAllByKey;     //  UnlockAllByKey
-#ifndef __REACTOS__
     //
     //  This callback has been replaced by CdFilterCallbackAcquireForCreateSection.
     //
 
     CdFastIoDispatch.AcquireFileForNtCreateSection =  NULL;
-#else
-    CdFastIoDispatch.AcquireFileForNtCreateSection =  CdAcquireForCreateSection;
-#endif
     CdFastIoDispatch.ReleaseFileForNtCreateSection =  CdReleaseForCreateSection;
     CdFastIoDispatch.FastIoQueryNetworkOpenInfo =     CdFastQueryNetworkInfo;   //  QueryNetworkInfo
     
diff --git a/drivers/filesystems/cdfs_new/cdprocs.h b/drivers/filesystems/cdfs_new/cdprocs.h
index 6506b233cb9..6c957aebba3 100755
--- a/drivers/filesystems/cdfs_new/cdprocs.h
+++ b/drivers/filesystems/cdfs_new/cdprocs.h
@@ -1121,7 +1121,6 @@ CdReleaseFromCache (
     _Inout_ PFCB Fcb
     );
 
-#ifndef __REACTOS__
 _Requires_lock_held_(_Global_critical_region_)
 NTSTATUS
 NTAPI /* ReactOS Change: GCC Does not support STDCALL by default */
@@ -1129,13 +1128,6 @@ CdFilterCallbackAcquireForCreateSection (
     _In_ PFS_FILTER_CALLBACK_DATA CallbackData,
     _Unreferenced_parameter_ PVOID *CompletionContext
     );
-#else
-VOID
-NTAPI /* ReactOS Change: GCC Does not support STDCALL by default */
-CdAcquireForCreateSection (
-    IN PFILE_OBJECT FileObject
-    );
-#endif
 
 _Function_class_(FAST_IO_RELEASE_FILE)
 _Requires_lock_held_(_Global_critical_region_)
diff --git a/drivers/filesystems/cdfs_new/resrcsup.c b/drivers/filesystems/cdfs_new/resrcsup.c
index 0e7ebd9d307..c9eaa7be266 100755
--- a/drivers/filesystems/cdfs_new/resrcsup.c
+++ b/drivers/filesystems/cdfs_new/resrcsup.c
@@ -23,11 +23,7 @@ Abstract:
 
 #ifdef ALLOC_PRAGMA
 #pragma alloc_text(PAGE, CdAcquireForCache)
-#ifndef __REACTOS__
 #pragma alloc_text(PAGE, CdFilterCallbackAcquireForCreateSection)
-#else
-#pragma alloc_text(PAGE, CdAcquireForCreateSection)
-#endif
 #pragma alloc_text(PAGE, CdAcquireResource)
 #pragma alloc_text(PAGE, CdNoopAcquire)
 #pragma alloc_text(PAGE, CdNoopRelease)
@@ -278,7 +274,6 @@ Return Value:
 }
 
 
-#ifndef __REACTOS__
 _Requires_lock_held_(_Global_critical_region_)
 NTSTATUS
 NTAPI /* ReactOS Change: GCC Does not support STDCALL by default */
@@ -361,55 +356,6 @@ Return Value:
 
     UNREFERENCED_PARAMETER( CompletionContext );
 }
-#else
-VOID
-NTAPI /* ReactOS Change: GCC Does not support STDCALL by default */
-CdAcquireForCreateSection (
-    IN PFILE_OBJECT FileObject
-    )
-
-/*++
-
-Routine Description:
-
-    This is the callback routine for MM to use to acquire the file exclusively.
-
-Arguments:
-
-    FileObject - File object for a Cdfs stream.
-
-Return Value:
-
-    None
-
---*/
-
-{
-    PAGED_CODE();
-
-    
-    //
-    //  Get the Fcb resource exclusively.
-    //
-
-    ExAcquireResourceExclusiveLite( &((PFCB) FileObject->FsContext)->FcbNonpaged->FcbResource,
-                                TRUE );
-                                
-    //
-    //  Take the File resource shared.  We need this later on when MM calls 
-    //  QueryStandardInfo to get the file size.  
-    //
-    //  If we don't use StarveExclusive,  then we can get wedged behind an 
-    //  exclusive waiter who is waiting on someone else holding it shared in the 
-    //  read->initializecachemap path (which calls createsection) who is in turn 
-    //  waiting on us to finish the create section.
-    //
-
-    ExAcquireSharedStarveExclusive( ((PFCB) FileObject->FsContext)->Resource,
-                                    TRUE );
-}
-#endif
-
 
 
 _Function_class_(FAST_IO_RELEASE_FILE)