[ros-diffs] 02/05: [NTOSKRNL] When marking a BCB dirty, also mark the underlying VACB dirty. Experiment and MSDN tend to show that a dirty BCB is queued for lazy write. This will do the job here!

[Pierre Schweitzer]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=07e6e9c9c1415385edf7f…

commit 07e6e9c9c1415385edf7fb6ad5f503b88db8b047
Author:     Pierre Schweitzer <pierre(a)reactos.org>
AuthorDate: Tue Jan 23 21:48:29 2018 +0100
Commit:     Pierre Schweitzer <pierre(a)reactos.org>
CommitDate: Tue Jan 23 23:25:26 2018 +0100

    [NTOSKRNL] When marking a BCB dirty, also mark the underlying VACB dirty.
    Experiment and MSDN tend to show that a dirty BCB is queued for lazy write.
    This will do the job here!
    
    Also, renamed CcRosMarkDirtyFile() which is more accurate, and added a new
    function CcRosMarkDirtyVacb() which just takes a VACB as arg (expected locked)
    and marks it dirty (using previous implementation). Make CcRosMarkDirtyFile()
    use it.
    
    CORE-14235
---
 ntoskrnl/cc/pin.c              |  1 +
 ntoskrnl/cc/view.c             | 42 ++++++++++++++++++++++++++++--------------
 ntoskrnl/include/internal/cc.h |  7 ++++++-
 ntoskrnl/mm/section.c          |  4 ++--
 4 files changed, 37 insertions(+), 17 deletions(-)

diff --git a/ntoskrnl/cc/pin.c b/ntoskrnl/cc/pin.c
index 0241927f95..393b206a0f 100644
--- a/ntoskrnl/cc/pin.c
+++ b/ntoskrnl/cc/pin.c
@@ -247,6 +247,7 @@ CcSetDirtyPinnedData (
         Bcb, Lsn);
 
     iBcb->Dirty = TRUE;
+    CcRosMarkDirtyVacb(iBcb->Vacb);
 }
 
 
diff --git a/ntoskrnl/cc/view.c b/ntoskrnl/cc/view.c
index 0d1822c696..465fffa595 100644
--- a/ntoskrnl/cc/view.c
+++ b/ntoskrnl/cc/view.c
@@ -565,25 +565,15 @@ CcRosLookupVacb (
     return NULL;
 }
 
-NTSTATUS
+VOID
 NTAPI
 CcRosMarkDirtyVacb (
-    PROS_SHARED_CACHE_MAP SharedCacheMap,
-    LONGLONG FileOffset)
+    PROS_VACB Vacb)
 {
-    PROS_VACB Vacb;
     KIRQL oldIrql;
+    PROS_SHARED_CACHE_MAP SharedCacheMap;
 
-    ASSERT(SharedCacheMap);
-
-    DPRINT("CcRosMarkDirtyVacb(SharedCacheMap 0x%p, FileOffset %I64u)\n",
-           SharedCacheMap, FileOffset);
-
-    Vacb = CcRosLookupVacb(SharedCacheMap, FileOffset);
-    if (Vacb == NULL)
-    {
-        KeBugCheck(CACHE_MANAGER);
-    }
+    SharedCacheMap = Vacb->SharedCacheMap;
 
     KeAcquireGuardedMutex(&ViewLock);
     KeAcquireSpinLock(&SharedCacheMap->CacheMapLock, &oldIrql);
@@ -606,6 +596,30 @@ CcRosMarkDirtyVacb (
 
     KeReleaseSpinLock(&SharedCacheMap->CacheMapLock, oldIrql);
     KeReleaseGuardedMutex(&ViewLock);
+}
+
+NTSTATUS
+NTAPI
+CcRosMarkDirtyFile (
+    PROS_SHARED_CACHE_MAP SharedCacheMap,
+    LONGLONG FileOffset)
+{
+    PROS_VACB Vacb;
+
+    ASSERT(SharedCacheMap);
+
+    DPRINT("CcRosMarkDirtyVacb(SharedCacheMap 0x%p, FileOffset %I64u)\n",
+           SharedCacheMap, FileOffset);
+
+    Vacb = CcRosLookupVacb(SharedCacheMap, FileOffset);
+    if (Vacb == NULL)
+    {
+        KeBugCheck(CACHE_MANAGER);
+    }
+
+    CcRosMarkDirtyVacb(Vacb);
+
+
     CcRosReleaseVacbLock(Vacb);
 
     return STATUS_SUCCESS;
diff --git a/ntoskrnl/include/internal/cc.h b/ntoskrnl/include/internal/cc.h
index b1bb1ab165..cc62381aad 100644
--- a/ntoskrnl/include/internal/cc.h
+++ b/ntoskrnl/include/internal/cc.h
@@ -281,11 +281,16 @@ CcInitCacheZeroPage(VOID);
 
 NTSTATUS
 NTAPI
-CcRosMarkDirtyVacb(
+CcRosMarkDirtyFile(
     PROS_SHARED_CACHE_MAP SharedCacheMap,
     LONGLONG FileOffset
 );
 
+VOID
+NTAPI
+CcRosMarkDirtyVacb(
+    PROS_VACB Vacb);
+
 NTSTATUS
 NTAPI
 CcRosFlushDirtyPages(
diff --git a/ntoskrnl/mm/section.c b/ntoskrnl/mm/section.c
index 66fa6d2245..5c954395a9 100644
--- a/ntoskrnl/mm/section.c
+++ b/ntoskrnl/mm/section.c
@@ -2374,7 +2374,7 @@ MmWritePageSectionView(PMMSUPPORT AddressSpace,
         ASSERT(SwapEntry == 0);
         //SOffset.QuadPart = Offset.QuadPart + Segment->Image.FileOffset;
 #ifndef NEWCC
-        CcRosMarkDirtyVacb(SharedCacheMap, Offset.QuadPart);
+        CcRosMarkDirtyFile(SharedCacheMap, Offset.QuadPart);
 #endif
         MmLockSectionSegment(Segment);
         MmSetPageEntrySectionSegment(Segment, &Offset, PageEntry);
@@ -4006,7 +4006,7 @@ MmFreeSectionPage(PVOID Context, MEMORY_AREA* MemoryArea, PVOID
Address,
 #ifndef NEWCC
             FileObject = MemoryArea->Data.SectionData.Section->FileObject;
             SharedCacheMap = FileObject->SectionObjectPointer->SharedCacheMap;
-            CcRosMarkDirtyVacb(SharedCacheMap, Offset.QuadPart +
Segment->Image.FileOffset);
+            CcRosMarkDirtyFile(SharedCacheMap, Offset.QuadPart +
Segment->Image.FileOffset);
 #endif
             ASSERT(SwapEntry == 0);
         }