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[NTOSKRNL] When marking a VACB dirty on unmap/unpin, use CcRosMarkDirtyVacb().

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This should help reducing race conditions with lazy writer, and thus reduce random BSODs.

CORE-14263
This commit is contained in:
Pierre Schweitzer 2018-01-27 10:57:50 +01:00
parent 1971137a5f
commit a3d78067ab
No known key found for this signature in database
GPG key ID: 7545556C3D585B0B
1 changed files with 22 additions and 28 deletions
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50
ntoskrnl/cc/view.c
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@ -517,26 +517,25 @@ CcRosReleaseVacb (
BOOLEAN Mapped)
{
BOOLEAN WasDirty;
KIRQL oldIrql;
ASSERT(SharedCacheMap);
DPRINT("CcRosReleaseVacb(SharedCacheMap 0x%p, Vacb 0x%p, Valid %u)\n",
SharedCacheMap, Vacb, Valid);
KeAcquireGuardedMutex(&ViewLock);
KeAcquireSpinLock(&SharedCacheMap->CacheMapLock, &oldIrql);
Vacb->Valid = Valid;
WasDirty = Vacb->Dirty;
Vacb->Dirty = Vacb->Dirty || Dirty;
if (!WasDirty && Vacb->Dirty)
WasDirty = FALSE;
if (Dirty)
{
InsertTailList(&DirtyVacbListHead, &Vacb->DirtyVacbListEntry);
CcTotalDirtyPages += VACB_MAPPING_GRANULARITY / PAGE_SIZE;
Vacb->SharedCacheMap->DirtyPages += VACB_MAPPING_GRANULARITY / PAGE_SIZE;
if (!Vacb->Dirty && Dirty)
{
CcRosMarkDirtyVacb(Vacb);
}
else
{
WasDirty = TRUE;
}
}
if (Mapped)
@ -553,8 +552,6 @@ CcRosReleaseVacb (
CcRosVacbIncRefCount(Vacb);
}
KeReleaseSpinLock(&SharedCacheMap->CacheMapLock, oldIrql);
KeReleaseGuardedMutex(&ViewLock);
CcRosReleaseVacbLock(Vacb);
return STATUS_SUCCESS;
@ -676,7 +673,6 @@ CcRosUnmapVacb (
{
PROS_VACB Vacb;
BOOLEAN WasDirty;
KIRQL oldIrql;
ASSERT(SharedCacheMap);
@ -689,21 +685,21 @@ CcRosUnmapVacb (
return STATUS_UNSUCCESSFUL;
}
KeAcquireGuardedMutex(&ViewLock);
KeAcquireSpinLock(&SharedCacheMap->CacheMapLock, &oldIrql);
WasDirty = Vacb->Dirty;
Vacb->Dirty = Vacb->Dirty || NowDirty;
WasDirty = FALSE;
if (NowDirty)
{
if (!Vacb->Dirty && NowDirty)
{
CcRosMarkDirtyVacb(Vacb);
}
else
{
WasDirty = TRUE;
}
}
Vacb->MappedCount--;
if (!WasDirty && NowDirty)
{
InsertTailList(&DirtyVacbListHead, &Vacb->DirtyVacbListEntry);
CcTotalDirtyPages += VACB_MAPPING_GRANULARITY / PAGE_SIZE;
Vacb->SharedCacheMap->DirtyPages += VACB_MAPPING_GRANULARITY / PAGE_SIZE;
}
CcRosVacbDecRefCount(Vacb);
if (!WasDirty && NowDirty)
{
@ -714,8 +710,6 @@ CcRosUnmapVacb (
CcRosVacbDecRefCount(Vacb);
}
KeReleaseSpinLock(&SharedCacheMap->CacheMapLock, oldIrql);
KeReleaseGuardedMutex(&ViewLock);
CcRosReleaseVacbLock(Vacb);
return STATUS_SUCCESS;