[ros-diffs] [reactos] 34/100: [NTOS/CC] Be more precise when notifying Mm about dirty pages

[Jérôme Gardou]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=c74cbf0c0bed7ae9831c23...

commit c74cbf0c0bed7ae9831c23527931907de55379cc
Author:     Jérôme Gardou [e-mail]
AuthorDate: Wed Dec 2 12:30:48 2020 +0100
Commit:     Jérôme Gardou [e-mail]
CommitDate: Wed Feb 3 09:41:22 2021 +0100

[NTOS/CC] Be more precise when notifying Mm about dirty pages
---
 ntoskrnl/cc/copy.c | 10 ++++++++++
 ntoskrnl/cc/pin.c  |  5 +++++
 ntoskrnl/cc/view.c |  3 ---
 3 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/ntoskrnl/cc/copy.c b/ntoskrnl/cc/copy.c
index 17b7a366d17..f92040aa0b2 100644
--- a/ntoskrnl/cc/copy.c
+++ b/ntoskrnl/cc/copy.c
@@ -586,6 +586,11 @@ CcCopyWrite (
             Buffer = (PVOID)((ULONG_PTR)Buffer + VacbLength);
             CurrentOffset += VacbLength;
             Length -= VacbLength;
+
+            /* Tell Mm */
+            Status = MmMakePagesDirty(NULL, Add2Ptr(Vacb->BaseAddress, VacbOffset), VacbLength);
+            if (!NT_SUCCESS(Status))
+                ExRaiseStatus(Status);
         }
         _SEH2_FINALLY
         {
@@ -829,6 +834,11 @@ CcZeroData (

WriteOffset.QuadPart += VacbLength;
             Length -= VacbLength;
+
+            /* Tell Mm */
+            Status = MmMakePagesDirty(NULL, Add2Ptr(Vacb->BaseAddress, VacbOffset), VacbLength);
+            if (!NT_SUCCESS(Status))
+                ExRaiseStatus(Status);
         }
         _SEH2_FINALLY
         {
diff --git a/ntoskrnl/cc/pin.c b/ntoskrnl/cc/pin.c
index 189ba480305..0d5642b9932 100644
--- a/ntoskrnl/cc/pin.c
+++ b/ntoskrnl/cc/pin.c
@@ -540,6 +540,11 @@ CcSetDirtyPinnedData (
     CCTRACE(CC_API_DEBUG, "Bcb=%p Lsn=%p\n",
         Bcb, Lsn);

+    /* Tell Mm */
+    MmMakePagesDirty(NULL,
+                     Add2Ptr(iBcb->Vacb->BaseAddress, iBcb->PFCB.MappedFileOffset.QuadPart - iBcb->Vacb->FileOffset.QuadPart),
+                     iBcb->PFCB.MappedLength);
+
     if (!iBcb->Vacb->Dirty)
     {
         CcRosMarkDirtyVacb(iBcb->Vacb);
diff --git a/ntoskrnl/cc/view.c b/ntoskrnl/cc/view.c
index a14635f2135..0e07eb7f1b6 100644
--- a/ntoskrnl/cc/view.c
+++ b/ntoskrnl/cc/view.c
@@ -420,9 +420,6 @@ CcRosMarkDirtyVacb (
         CcScheduleLazyWriteScan(FALSE);
     }
     KeReleaseQueuedSpinLock(LockQueueMasterLock, oldIrql);
-
-    /* Tell Mm */
-    MmMakePagesDirty(NULL, Vacb->BaseAddress, Length);
 }

VOID