* - Amount of dirty pages
* - List for deferred writes
* - Spinlock when dealing with the deferred list
+ * - List for "clean" shared cache maps
*/
ULONG CcDirtyPageThreshold = 0;
ULONG CcTotalDirtyPages = 0;
LIST_ENTRY CcDeferredWrites;
KSPIN_LOCK CcDeferredWriteSpinLock;
+LIST_ENTRY CcCleanSharedCacheMapList;
/* Internal vars (ROS):
* - Event to notify lazy writer to shutdown
* - Event to inform watchers lazy writer is done for this loop
+ * - Lock for the CcCleanSharedCacheMapList list
*/
KEVENT iLazyWriterShutdown;
KEVENT iLazyWriterNotify;
+KSPIN_LOCK iSharedCacheMapLock;
#if DBG
static void CcRosVacbIncRefCount_(PROS_VACB vacb, const char* file, int line)
SharedCacheMap->OpenCount--;
if (SharedCacheMap->OpenCount == 0)
{
+ KIRQL OldIrql;
+
FileObject->SectionObjectPointer->SharedCacheMap = NULL;
/*
current = CONTAINING_RECORD(current_entry, ROS_VACB, CacheMapVacbListEntry);
CcRosInternalFreeVacb(current);
}
+
+ KeAcquireSpinLock(&iSharedCacheMapLock, &OldIrql);
+ RemoveEntryList(&SharedCacheMap->SharedCacheMapLinks);
+ KeReleaseSpinLock(&iSharedCacheMapLock, OldIrql);
+
ExFreeToNPagedLookasideList(&SharedCacheMapLookasideList, SharedCacheMap);
KeAcquireGuardedMutex(&ViewLock);
}
KeAcquireGuardedMutex(&ViewLock);
if (SharedCacheMap == NULL)
{
+ KIRQL OldIrql;
+
SharedCacheMap = ExAllocateFromNPagedLookasideList(&SharedCacheMapLookasideList);
if (SharedCacheMap == NULL)
{
KeInitializeSpinLock(&SharedCacheMap->CacheMapLock);
InitializeListHead(&SharedCacheMap->CacheMapVacbListHead);
FileObject->SectionObjectPointer->SharedCacheMap = SharedCacheMap;
+
+ KeAcquireSpinLock(&iSharedCacheMapLock, &OldIrql);
+ InsertTailList(&CcCleanSharedCacheMapList, &SharedCacheMap->SharedCacheMapLinks);
+ KeReleaseSpinLock(&iSharedCacheMapLock, OldIrql);
}
if (FileObject->PrivateCacheMap == NULL)
{
InitializeListHead(&DirtyVacbListHead);
InitializeListHead(&VacbLruListHead);
InitializeListHead(&CcDeferredWrites);
+ InitializeListHead(&CcCleanSharedCacheMapList);
KeInitializeSpinLock(&CcDeferredWriteSpinLock);
+ KeInitializeSpinLock(&iSharedCacheMapLock);
KeInitializeGuardedMutex(&ViewLock);
ExInitializeNPagedLookasideList(&iBcbLookasideList,
NULL,