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[NTOSKRNL:CC] Disable ExtraWriteBehind Threadpool ,

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Threadpool facility will be developed first in  LazyWriter-Threadpool branch before merging, to ensure stability. 

Removed : CcComputeNextScanTime
This commit is contained in:
Dibyamartanda Samanta
2024-08-18 08:22:58 +02:00
committed by CodingWorkshop Signing Team
parent e25bcab194
commit d0d6097d57
1 changed files with 4 additions and 55 deletions
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59
NTOSKRNL/CC/cclazywriter.cpp
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@@ -15,57 +15,6 @@ extern "C"
/*Internal Function*/
VOID
NTAPI
CcComputeNextScanTime(PLARGE_INTEGER OldestTICKTIMEForMetadata, PLARGE_INTEGER NextScanDelay)
{
NextScanDelay- = 0;
LARGE_INTEGER CurrentTickCount = {0};
LARGE_INTEGER TICKTIME = {0};
LARGE_INTEGER WRITE_DELAY = {0};
LARGE_INTEGER TICK_ELAPSED = {0};
if (CcMaxWriteBehindThreads < CcNumberofWorkerThreads)
{
KeQueryTickCount(&CurrentTickCount);
// Calculate Tick Time based on the current tick count and the oldest scan time
TICKTIME.QuadPart = 160000000 / KeMaximumIncrement;
WRITE_DELAY.QuadPart = (OldestTICKTIMEForMetadata->QuadPart - CurrentTickCount.QuadPart) / KeMaximumIncrement;
// Increment the consecutive workless lazy scan count
++CcConsecutiveWorklessLazyScanCount;
// Check if the oldest scan time is not the maximum and the calculated delay is greater than the current tick
// count
if (OldestTICKTIMEForMetadata->QuadPart != -1 && OldestTICKTIMEForMetadata->QuadPart != 0x7FFFFFFFFFFFFFFF &&
(TICKTIME.QuadPart + OldestTICKTIMEForMetadata->QuadPart) > CurrentTickCount.QuadPart)
{
TICK_ELAPSED.QuadPart = OldestTICKTIMEForMetadata->QuadPart - CurrentTickCount.QuadPart;
// Calculate the next scan delay
NextScanDelay->QuadPart = TICKTIME.QuadPart + TICK_ELAPSED.QuadPart;
// Reset the consecutive workless lazy scan count
CcConsecutiveWorklessLazyScanCount = 0;
}
// Check if the number of consecutive workless lazy scans has reached the maximum
if (CcConsecutiveWorklessLazyScanCount >= CcMaxWorklessLazywriteScans)
{
// Disable the scan by setting the next scan delay to the maximum values
NextScanDelay->QuadPart = -1;
CcConsecutiveWorklessLazyScanCount = 0;
NextScanDelay->HighPart = 0x7FFFFFFF;
}
}
}
VOID
VECTORCALL
CcPostWorkQueue(IN PWORK_QUEUE_ENTRY WorkItem,
@@ -951,10 +900,10 @@ NTAPI CcLazyWriteScan()
CcPostWorkQueue(workItem, &CcRegularWorkQueue);
}
CcComputeNextScanTime(&OldestLWSTimeStamp, &NextScanDelay);
// CcComputeNextScanTime(&OldestLWSTimeStamp, &NextScanDelay); Enable When Threadpool is finished
if (!IsListEmpty(&PostWorkList) || !IsListEmpty(&CcDeferredWrites) || MmRegistryStatus.ProductStatus ||
NextScanDelay.QuadPart != 0x7FFFFFFFFFFFFFFF))
// if (!IsListEmpty(&PostWorkList) || !IsListEmpty(&CcDeferredWrites) || MmRegistryStatus.ProductStatus ||NextScanDelay.QuadPart != 0x7FFFFFFFFFFFFFFF))
if (!IsListEmpty(&PostWorkList) || !IsListEmpty(&CcDeferredWrites) || MmRegistryStatus.ProductStatus))
{
/* Schedule a lazy write scan */
CcRescheduleLazyWriteScan(&NextScanDelay);
@@ -1117,7 +1066,7 @@ CcWorkerThread(PVOID Parameter)
{
CcQueueThrottle = FALSE;
DropThrottle = FALSE;
CcReEngageWorkerThreads(CcThreadsActiveBeforeThrottle, CcExtraThreadsActiveBeforeThrottle);
// CcReEngageWorkerThreads(CcThreadsActiveBeforeThrottle, CcExtraThreadsActiveBeforeThrottle); Enable When Threadpool is ready
}
if (IoStatus.Information == 0x8A5E)