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- Respect the TruncateSize parameter in CcUninitializeCacheMap. Avoids "freeing dirty VACB" messages for cache views beyond the end of the file.
CORE-12893 #resolve

svn path=/trunk/; revision=74358
This commit is contained in:
Thomas Faber 2017-04-17 18:37:12 +00:00
parent 25db42d246
commit 4677d6bfe0
1 changed files with 21 additions and 0 deletions
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21
reactos/ntoskrnl/cc/fs.c
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@ -286,13 +286,34 @@ CcUninitializeCacheMap (
IN PCACHE_UNINITIALIZE_EVENT UninitializeCompleteEvent OPTIONAL) IN PCACHE_UNINITIALIZE_EVENT UninitializeCompleteEvent OPTIONAL)
{ {
NTSTATUS Status; NTSTATUS Status;
PROS_SHARED_CACHE_MAP SharedCacheMap;
KIRQL OldIrql;
CCTRACE(CC_API_DEBUG, "FileObject=%p TruncateSize=%p UninitializeCompleteEvent=%p\n", CCTRACE(CC_API_DEBUG, "FileObject=%p TruncateSize=%p UninitializeCompleteEvent=%p\n",
FileObject, TruncateSize, UninitializeCompleteEvent); FileObject, TruncateSize, UninitializeCompleteEvent);
if (TruncateSize != NULL &&
FileObject->SectionObjectPointer != NULL &&
FileObject->SectionObjectPointer->SharedCacheMap != NULL)
{
SharedCacheMap = FileObject->SectionObjectPointer->SharedCacheMap;
KeAcquireSpinLock(&SharedCacheMap->CacheMapLock, &OldIrql);
if (SharedCacheMap->FileSize.QuadPart > TruncateSize->QuadPart)
{
SharedCacheMap->FileSize = *TruncateSize;
}
KeReleaseSpinLock(&SharedCacheMap->CacheMapLock, OldIrql);
CcPurgeCacheSection(FileObject->SectionObjectPointer,
TruncateSize,
0,
FALSE);
}
Status = CcRosReleaseFileCache(FileObject); Status = CcRosReleaseFileCache(FileObject);
if (UninitializeCompleteEvent) if (UninitializeCompleteEvent)
{
KeSetEvent(&UninitializeCompleteEvent->Event, IO_NO_INCREMENT, FALSE); KeSetEvent(&UninitializeCompleteEvent->Event, IO_NO_INCREMENT, FALSE);
}
return NT_SUCCESS(Status); return NT_SUCCESS(Status);
} }