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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 * - Amount of dirty pages
* - List for deferred writes * - List for deferred writes
* - Spinlock when dealing with the deferred list * - Spinlock when dealing with the deferred list
* - List for "clean" shared cache maps
*/ */
ULONG CcDirtyPageThreshold = 0; ULONG CcDirtyPageThreshold = 0;
ULONG CcTotalDirtyPages = 0; ULONG CcTotalDirtyPages = 0;
LIST_ENTRY CcDeferredWrites; LIST_ENTRY CcDeferredWrites;
KSPIN_LOCK CcDeferredWriteSpinLock; KSPIN_LOCK CcDeferredWriteSpinLock;
LIST_ENTRY CcCleanSharedCacheMapList;
/* Internal vars (ROS): /* Internal vars (ROS):
* - Event to notify lazy writer to shutdown * - Event to notify lazy writer to shutdown
* - Event to inform watchers lazy writer is done for this loop * - Event to inform watchers lazy writer is done for this loop
* - Lock for the CcCleanSharedCacheMapList list
*/ */
KEVENT iLazyWriterShutdown; KEVENT iLazyWriterShutdown;
KEVENT iLazyWriterNotify; KEVENT iLazyWriterNotify;
KSPIN_LOCK iSharedCacheMapLock;
#if DBG #if DBG
static void CcRosVacbIncRefCount_(PROS_VACB vacb, const char* file, int line) static void CcRosVacbIncRefCount_(PROS_VACB vacb, const char* file, int line)
@ -1139,6 +1143,8 @@ CcRosDeleteFileCache (
SharedCacheMap->OpenCount--; SharedCacheMap->OpenCount--;
if (SharedCacheMap->OpenCount == 0) if (SharedCacheMap->OpenCount == 0)
{ {
KIRQL OldIrql;
FileObject->SectionObjectPointer->SharedCacheMap = NULL; FileObject->SectionObjectPointer->SharedCacheMap = NULL;
/* /*
@ -1173,6 +1179,11 @@ CcRosDeleteFileCache (
current = CONTAINING_RECORD(current_entry, ROS_VACB, CacheMapVacbListEntry); current = CONTAINING_RECORD(current_entry, ROS_VACB, CacheMapVacbListEntry);
CcRosInternalFreeVacb(current); CcRosInternalFreeVacb(current);
} }
KeAcquireSpinLock(&iSharedCacheMapLock, &OldIrql);
RemoveEntryList(&SharedCacheMap->SharedCacheMapLinks);
KeReleaseSpinLock(&iSharedCacheMapLock, OldIrql);
ExFreeToNPagedLookasideList(&SharedCacheMapLookasideList, SharedCacheMap); ExFreeToNPagedLookasideList(&SharedCacheMapLookasideList, SharedCacheMap);
KeAcquireGuardedMutex(&ViewLock); KeAcquireGuardedMutex(&ViewLock);
} }
@ -1317,6 +1328,8 @@ CcRosInitializeFileCache (
KeAcquireGuardedMutex(&ViewLock); KeAcquireGuardedMutex(&ViewLock);
if (SharedCacheMap == NULL) if (SharedCacheMap == NULL)
{ {
KIRQL OldIrql;
SharedCacheMap = ExAllocateFromNPagedLookasideList(&SharedCacheMapLookasideList); SharedCacheMap = ExAllocateFromNPagedLookasideList(&SharedCacheMapLookasideList);
if (SharedCacheMap == NULL) if (SharedCacheMap == NULL)
{ {
@ -1338,6 +1351,10 @@ CcRosInitializeFileCache (
KeInitializeSpinLock(&SharedCacheMap->CacheMapLock); KeInitializeSpinLock(&SharedCacheMap->CacheMapLock);
InitializeListHead(&SharedCacheMap->CacheMapVacbListHead); InitializeListHead(&SharedCacheMap->CacheMapVacbListHead);
FileObject->SectionObjectPointer->SharedCacheMap = SharedCacheMap; FileObject->SectionObjectPointer->SharedCacheMap = SharedCacheMap;
KeAcquireSpinLock(&iSharedCacheMapLock, &OldIrql);
InsertTailList(&CcCleanSharedCacheMapList, &SharedCacheMap->SharedCacheMapLinks);
KeReleaseSpinLock(&iSharedCacheMapLock, OldIrql);
} }
if (FileObject->PrivateCacheMap == NULL) if (FileObject->PrivateCacheMap == NULL)
{ {
@ -1395,7 +1412,9 @@ CcInitView (
InitializeListHead(&DirtyVacbListHead); InitializeListHead(&DirtyVacbListHead);
InitializeListHead(&VacbLruListHead); InitializeListHead(&VacbLruListHead);
InitializeListHead(&CcDeferredWrites); InitializeListHead(&CcDeferredWrites);
InitializeListHead(&CcCleanSharedCacheMapList);
KeInitializeSpinLock(&CcDeferredWriteSpinLock); KeInitializeSpinLock(&CcDeferredWriteSpinLock);
KeInitializeSpinLock(&iSharedCacheMapLock);
KeInitializeGuardedMutex(&ViewLock); KeInitializeGuardedMutex(&ViewLock);
ExInitializeNPagedLookasideList(&iBcbLookasideList, ExInitializeNPagedLookasideList(&iBcbLookasideList,
NULL, NULL,

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

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