From 5e938c4c2511613667802aaab360054ed94ab12d Mon Sep 17 00:00:00 2001
From: Thamatip Chitpong <thamatip.chitpong@reactos.org>
Date: Sat, 16 Nov 2024 22:34:53 +0700
Subject: [PATCH] [NTOS:CC] Fix

---
 ntoskrnl/cc/view.c             | 36 ++--------------------------------
 ntoskrnl/include/internal/cc.h |  1 -
 2 files changed, 2 insertions(+), 35 deletions(-)

diff --git a/ntoskrnl/cc/view.c b/ntoskrnl/cc/view.c
index 6108317b59b32..724d85e73f545 100644
--- a/ntoskrnl/cc/view.c
+++ b/ntoskrnl/cc/view.c
@@ -282,9 +282,6 @@ CcRosFlushDirtyPages (
     {
         PROS_SHARED_CACHE_MAP current;
         BOOLEAN Locked;
-        LARGE_INTEGER FlushOffset;
-        LONGLONG ValidDataGoal;
-        ULONG FlushLength;
         IO_STATUS_BLOCK FlushIosb;
         ULONG FlushedPages;
 
@@ -313,42 +310,12 @@ CcRosFlushDirtyPages (
         if (BooleanFlagOn(current->Flags, SHARED_CACHE_MAP_IN_LAZYWRITE))
             continue;
 
-        KeAcquireSpinLockAtDpcLevel(&current->CacheMapLock);
-
-        ASSERT(current->DirtyPages != 0);
-
-        /* A file system may indicate that the Cache Manager should not attempt
-         * to track valid data by using the special value of MAXLONGLONG as the
-         * valid data length in a CcSetFileSizes call.
-         */
-        if (current->ValidDataLength.QuadPart == MAXLONGLONG)
-        {
-            FlushOffset.QuadPart = 0;
-            ValidDataGoal = current->FileSize.QuadPart;
-        }
-        else
-        {
-            FlushOffset = current->ValidDataLength;
-            ValidDataGoal = current->FileSize.QuadPart - current->ValidDataLength.QuadPart;
-        }
-
-        KeReleaseSpinLockFromDpcLevel(&current->CacheMapLock);
-
         /* Mark for lazy write and keep a ref on the shared cache map */
         SetFlag(current->Flags, SHARED_CACHE_MAP_IN_LAZYWRITE);
         current->OpenCount++;
 
         KeReleaseQueuedSpinLock(LockQueueMasterLock, OldIrql);
 
-        if (FlushAll)
-        {
-            FlushLength = min(ValidDataGoal, MAX_FLUSH_LENGTH);
-        }
-        else
-        {
-            FlushLength = min(min((LONGLONG)Target * PAGE_SIZE, ValidDataGoal), MAX_FLUSH_LENGTH);
-        }
-
         Locked = current->Callbacks->AcquireForLazyWrite(current->LazyWriteContext, Wait);
         if (!Locked)
         {
@@ -365,7 +332,8 @@ CcRosFlushDirtyPages (
             continue;
         }
 
-        CcpFlushFileCache(current, &FlushOffset, FlushLength, TRUE, &FlushIosb);
+        /* FIXME: Take ValidDataLength into account */
+        CcpFlushFileCache(current, NULL, 0, TRUE, &FlushIosb);
 
         current->Callbacks->ReleaseFromLazyWrite(current->LazyWriteContext);
 
diff --git a/ntoskrnl/include/internal/cc.h b/ntoskrnl/include/internal/cc.h
index f42f815101f8e..a8dc60d67975a 100644
--- a/ntoskrnl/include/internal/cc.h
+++ b/ntoskrnl/include/internal/cc.h
@@ -203,7 +203,6 @@ typedef struct _ROS_SHARED_CACHE_MAP
 #define WRITEBEHIND_DISABLED 0x2
 #define SHARED_CACHE_MAP_IN_CREATION 0x4
 #define SHARED_CACHE_MAP_IN_LAZYWRITE 0x8
-#define MAX_FLUSH_LENGTH ((MAXULONG >> PAGE_SHIFT) * PAGE_SIZE)
 
 typedef struct _ROS_VACB
 {