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[NTOSKRNL] Link all the shared cache map together.

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This commit is contained in:
Pierre Schweitzer 2018-01-24 21:24:05 +01:00
parent 804472fab8
commit 9d1e16663a
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GPG key ID: 7545556C3D585B0B
2 changed files with 20 additions and 0 deletions
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19
ntoskrnl/cc/view.c
View file

@ -63,18 +63,22 @@ ULONG CcLazyWriteIos = 0;
* - 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)
@ -1139,6 +1143,8 @@ CcRosDeleteFileCache (
SharedCacheMap->OpenCount--;
if (SharedCacheMap->OpenCount == 0)
{
KIRQL OldIrql;
FileObject->SectionObjectPointer->SharedCacheMap = NULL;
/*
@ -1173,6 +1179,11 @@ CcRosDeleteFileCache (
current = CONTAINING_RECORD(current_entry, ROS_VACB, CacheMapVacbListEntry);
CcRosInternalFreeVacb(current);
}
KeAcquireSpinLock(&iSharedCacheMapLock, &OldIrql);
RemoveEntryList(&SharedCacheMap->SharedCacheMapLinks);
KeReleaseSpinLock(&iSharedCacheMapLock, OldIrql);
ExFreeToNPagedLookasideList(&SharedCacheMapLookasideList, SharedCacheMap);
KeAcquireGuardedMutex(&ViewLock);
}
@ -1317,6 +1328,8 @@ CcRosInitializeFileCache (
KeAcquireGuardedMutex(&ViewLock);
if (SharedCacheMap == NULL)
{
KIRQL OldIrql;
SharedCacheMap = ExAllocateFromNPagedLookasideList(&SharedCacheMapLookasideList);
if (SharedCacheMap == NULL)
{
@ -1338,6 +1351,10 @@ CcRosInitializeFileCache (
KeInitializeSpinLock(&SharedCacheMap->CacheMapLock);
InitializeListHead(&SharedCacheMap->CacheMapVacbListHead);
FileObject->SectionObjectPointer->SharedCacheMap = SharedCacheMap;
KeAcquireSpinLock(&iSharedCacheMapLock, &OldIrql);
InsertTailList(&CcCleanSharedCacheMapList, &SharedCacheMap->SharedCacheMapLinks);
KeReleaseSpinLock(&iSharedCacheMapLock, OldIrql);
}
if (FileObject->PrivateCacheMap == NULL)
{
@ -1395,7 +1412,9 @@ CcInitView (
InitializeListHead(&DirtyVacbListHead);
InitializeListHead(&VacbLruListHead);
InitializeListHead(&CcDeferredWrites);
InitializeListHead(&CcCleanSharedCacheMapList);
KeInitializeSpinLock(&CcDeferredWriteSpinLock);
KeInitializeSpinLock(&iSharedCacheMapLock);
KeInitializeGuardedMutex(&ViewLock);
ExInitializeNPagedLookasideList(&iBcbLookasideList,
NULL,

1
ntoskrnl/include/internal/cc.h
View file

@ -160,6 +160,7 @@ typedef struct _ROS_SHARED_CACHE_MAP
KSPIN_LOCK CacheMapLock;
ULONG OpenCount;
ULONG DirtyPageThreshold;
LIST_ENTRY SharedCacheMapLinks;
#if DBG
BOOLEAN Trace; /* enable extra trace output for this cache map and it's VACBs */
#endif