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[NTOS:CC]

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- Simplify CcSetFileSizes by using CcPurgeCacheSection
CORE-12893

svn path=/trunk/; revision=74357
This commit is contained in:
Thomas Faber 2017-04-17 18:13:17 +00:00
parent ef88fe7a1a
commit 25db42d246
1 changed files with 9 additions and 60 deletions
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69
reactos/ntoskrnl/cc/fs.c
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@ -225,10 +225,6 @@ CcSetFileSizes (
{
KIRQL oldirql;
PROS_SHARED_CACHE_MAP SharedCacheMap;
PLIST_ENTRY current_entry;
PROS_VACB current;
LIST_ENTRY FreeListHead;
NTSTATUS Status;
CCTRACE(CC_API_DEBUG, "FileObject=%p FileSizes=%p\n",
FileObject, FileSizes);
@ -251,63 +247,16 @@ CcSetFileSizes (
if (FileSizes->AllocationSize.QuadPart < SharedCacheMap->SectionSize.QuadPart)
{
InitializeListHead(&FreeListHead);
KeAcquireGuardedMutex(&ViewLock);
KeAcquireSpinLock(&SharedCacheMap->CacheMapLock, &oldirql);
current_entry = SharedCacheMap->CacheMapVacbListHead.Flink;
while (current_entry != &SharedCacheMap->CacheMapVacbListHead)
{
current = CONTAINING_RECORD(current_entry,
ROS_VACB,
CacheMapVacbListEntry);
current_entry = current_entry->Flink;
if (current->FileOffset.QuadPart >= FileSizes->AllocationSize.QuadPart)
{
if ((current->ReferenceCount == 0) || ((current->ReferenceCount == 1) && current->Dirty))
{
RemoveEntryList(&current->CacheMapVacbListEntry);
RemoveEntryList(&current->VacbLruListEntry);
if (current->Dirty)
{
RemoveEntryList(&current->DirtyVacbListEntry);
DirtyPageCount -= VACB_MAPPING_GRANULARITY / PAGE_SIZE;
}
InsertHeadList(&FreeListHead, &current->CacheMapVacbListEntry);
}
else
{
DPRINT1("Someone has referenced a VACB behind the new size.\n");
KeBugCheck(CACHE_MANAGER);
}
}
}
SharedCacheMap->SectionSize = FileSizes->AllocationSize;
SharedCacheMap->FileSize = FileSizes->FileSize;
KeReleaseSpinLock(&SharedCacheMap->CacheMapLock, oldirql);
KeReleaseGuardedMutex(&ViewLock);
current_entry = FreeListHead.Flink;
while(current_entry != &FreeListHead)
{
current = CONTAINING_RECORD(current_entry, ROS_VACB, CacheMapVacbListEntry);
current_entry = current_entry->Flink;
Status = CcRosInternalFreeVacb(current);
if (!NT_SUCCESS(Status))
{
DPRINT1("CcRosInternalFreeVacb failed, status = %x\n", Status);
KeBugCheck(CACHE_MANAGER);
}
}
}
else
{
KeAcquireSpinLock(&SharedCacheMap->CacheMapLock, &oldirql);
SharedCacheMap->SectionSize = FileSizes->AllocationSize;
SharedCacheMap->FileSize = FileSizes->FileSize;
KeReleaseSpinLock(&SharedCacheMap->CacheMapLock, oldirql);
CcPurgeCacheSection(FileObject->SectionObjectPointer,
&FileSizes->AllocationSize,
0,
FALSE);
}
KeAcquireSpinLock(&SharedCacheMap->CacheMapLock, &oldirql);
SharedCacheMap->SectionSize = FileSizes->AllocationSize;
SharedCacheMap->FileSize = FileSizes->FileSize;
KeReleaseSpinLock(&SharedCacheMap->CacheMapLock, oldirql);
}
/*