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[NTOS/MM]

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

svn path=/trunk/; revision=63977
This commit is contained in:
Jérôme Gardou 2014-08-29 09:21:35 +00:00
parent 1294e7eb2c
commit b091e65253
1 changed files with 4 additions and 2 deletions
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6
reactos/ntoskrnl/mm/ARM3/section.c
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@ -2204,7 +2204,9 @@ MiRemoveMappedPtes(IN PVOID BaseAddress,
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)
@ -2223,7 +2225,7 @@ MiRemoveMappedPtes(IN PVOID BaseAddress,
/* 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));