[NTOS/MM]

 - Properly decrement pagetable frame entry share count when unmapping a system-mapped section
 - Handle the PTE dirty bit

svn path=/trunk/; revision=63977

diff --git a/reactos/ntoskrnl/mm/ARM3/section.c b/reactos/ntoskrnl/mm/ARM3/section.c
index f3063d0..f6fa604 100644 (file)
--- a/reactos/ntoskrnl/mm/ARM3/section.c
+++ b/reactos/ntoskrnl/mm/ARM3/section.c
@@ -2204,7 +2204,9 @@ MiRemoveMappedPtes(IN PVOID BaseAddress,
             OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
             ASSERT(((Pfn1->u3.e1.PrototypePte) && (Pfn1->OriginalPte.u.Soft.Prototype)) == 0);
 
             OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
             ASSERT(((Pfn1->u3.e1.PrototypePte) && (Pfn1->OriginalPte.u.Soft.Prototype)) == 0);
 

-            /* FIXME: Dirty bit management */
+            /* Mark the page as modified accordingly */
+            if (PteContents.u.Hard.Dirty)
+                Pfn1->u3.e1.Modified = 1;

 
             /* Was the PDE invalid */
             if (PointerPde->u.Long == 0)
 
             /* Was the PDE invalid */
             if (PointerPde->u.Long == 0)


@@ -2223,7 +2225,7 @@ MiRemoveMappedPtes(IN PVOID BaseAddress,
 
             /* Dereference the PDE and the PTE */
             Pfn2 = MiGetPfnEntry(PFN_FROM_PTE(PointerPde));
 
             /* Dereference the PDE and the PTE */
             Pfn2 = MiGetPfnEntry(PFN_FROM_PTE(PointerPde));

-            //MiDecrementShareCount(Pfn2, PFN_FROM_PTE(PointerPde));
+            MiDecrementShareCount(Pfn2, PFN_FROM_PTE(PointerPde));

             DBG_UNREFERENCED_LOCAL_VARIABLE(Pfn2);
             MiDecrementShareCount(Pfn1, PFN_FROM_PTE(&PteContents));
 
             DBG_UNREFERENCED_LOCAL_VARIABLE(Pfn2);
             MiDecrementShareCount(Pfn1, PFN_FROM_PTE(&PteContents));