[arty] 35749: Remove page cleaning in section.c -- not needed. Page replacement will take care of it. Add refcount for SharedCacheMap ... it appears that CcInitializeCacheMap and CcUninitializeCacheMap are expected to be paired and refcounted.
29 Aug
2008
29 Aug
'08
10:24 a.m.
Author: arty
Date: Fri Aug 29 05:24:38 2008
New Revision: 35749
URL: http://svn.reactos.org/svn/reactos?rev=35749&view=rev
Log:
Remove page cleaning in section.c -- not needed. Page replacement will
take care of it.
Add refcount for SharedCacheMap ... it appears that CcInitializeCacheMap
and CcUninitializeCacheMap are expected to be paired and refcounted.
Modified:
branches/arty-newcc/ntoskrnl/cache/cachesub.c
branches/arty-newcc/ntoskrnl/cache/fssup.c
branches/arty-newcc/ntoskrnl/cache/pinsup.c
branches/arty-newcc/ntoskrnl/include/internal/cc.h
branches/arty-newcc/ntoskrnl/mm/section.c
Modified: branches/arty-newcc/ntoskrnl/cache/cachesub.c
URL:
http://svn.reactos.org/svn/reactos/branches/arty-newcc/ntoskrnl/cache/cache…
==============================================================================
--- branches/arty-newcc/ntoskrnl/cache/cachesub.c [iso-8859-1] (original)
+++ branches/arty-newcc/ntoskrnl/cache/cachesub.c [iso-8859-1] Fri Aug 29 05:24:38 2008
@@ -36,7 +36,9 @@
PDEVICE_OBJECT DeviceObject;
PIO_STACK_LOCATION IrpSp;
KIRQL OldIrql;
-
+ PHYSICAL_ADDRESS Page;
+
+ ASSERT(Length <= PAGE_SIZE);
KeRaiseIrql(DISPATCH_LEVEL, &OldIrql);
if (MmIsDirtyPage(PsInitialSystemProcess, Buffer))
@@ -93,7 +95,9 @@
return Status;
}
}
-
+
+ Page = MmGetPhysicalAddress(Buffer);
+ MmSetCleanAllRmaps((PFN_TYPE)(Page.QuadPart >> PAGE_SHIFT));
ObDereferenceObject(FileObject);
DPRINT("Paging IO Done: %08x\n", ReadStatus->Status);
Modified: branches/arty-newcc/ntoskrnl/cache/fssup.c
URL:
http://svn.reactos.org/svn/reactos/branches/arty-newcc/ntoskrnl/cache/fssup…
==============================================================================
--- branches/arty-newcc/ntoskrnl/cache/fssup.c [iso-8859-1] (original)
+++ branches/arty-newcc/ntoskrnl/cache/fssup.c [iso-8859-1] Fri Aug 29 05:24:38 2008
@@ -104,13 +104,25 @@
IN PVOID LazyWriteContext)
{
DPRINT("Initializing file object for %wZ\n",
&FileObject->FileName);
- PNOCC_CACHE_MAP Map = ExAllocatePool(NonPagedPool, sizeof(NOCC_CACHE_MAP));
- FileObject->SectionObjectPointer->SharedCacheMap = Map;
- Map->FileObject = FileObject;
- Map->NumberOfMaps = 0;
- Map->FileSizes = *FileSizes;
- DPRINT("FileSizes->ValidDataLength %x\n",
FileSizes->ValidDataLength.LowPart);
- InitializeListHead(&Map->AssociatedBcb);
+ CcpLock();
+ if (FileObject->SectionObjectPointer->SharedCacheMap)
+ {
+ PNOCC_CACHE_MAP Map =
(PNOCC_CACHE_MAP)FileObject->SectionObjectPointer->SharedCacheMap;
+ InterlockedIncrement((PLONG)&Map->RefCount);
+ }
+ else
+ {
+ PNOCC_CACHE_MAP Map = ExAllocatePool(NonPagedPool, sizeof(NOCC_CACHE_MAP));
+ FileObject->SectionObjectPointer->SharedCacheMap = Map;
+ Map->RefCount = 1;
+ Map->FileObject = FileObject;
+ Map->NumberOfMaps = 0;
+ Map->FileSizes = *FileSizes;
+ ASSERT(Map->FileSizes.ValidDataLength.HighPart != 0xcccccccc);
+ DPRINT("FileSizes->ValidDataLength %x\n",
FileSizes->ValidDataLength.LowPart);
+ InitializeListHead(&Map->AssociatedBcb);
+ }
+ CcpUnlock();
}
BOOLEAN
@@ -124,10 +136,10 @@
PLIST_ENTRY Entry;
IO_STATUS_BLOCK IOSB;
- DPRINT("Uninitializing file object for %wZ\n",
&FileObject->FileName);
+ DPRINT("Uninitializing file object for %wZ SectionObjectPointer %x\n",
&FileObject->FileName, FileObject->SectionObjectPointer);
ASSERT(UninitializeEvent == NULL);
-
+
for (Entry = Map->AssociatedBcb.Flink;
Entry != &Map->AssociatedBcb;
Entry = Entry->Flink)
@@ -148,25 +160,28 @@
}
CcpLock();
-
- for (Entry = Map->AssociatedBcb.Flink;
- Entry != &Map->AssociatedBcb;
- Entry = Entry->Flink)
- {
- Bcb = CONTAINING_RECORD(Entry, NOCC_BCB, ThisFileList);
- if (Bcb->RefCount == 1)
- {
- DPRINT("Unmapping #%x\n", Bcb - CcCacheSections);
- CcpDereferenceCache(Bcb - CcCacheSections);
- }
+
+ if (InterlockedDecrement((PLONG)&Map->RefCount) == 1)
+ {
+ for (Entry = Map->AssociatedBcb.Flink;
+ Entry != &Map->AssociatedBcb;
+ Entry = Entry->Flink)
+ {
+ Bcb = CONTAINING_RECORD(Entry, NOCC_BCB, ThisFileList);
+ if (Bcb->RefCount == 1)
+ {
+ DPRINT("Unmapping #%x\n", Bcb - CcCacheSections);
+ CcpDereferenceCache(Bcb - CcCacheSections);
+ }
+ }
+
+ ExFreePool(Map);
+
+ /* Clear the cache map */
+ FileObject->SectionObjectPointer->SharedCacheMap = NULL;
}
CcpUnlock();
-
- ExFreePool(Map);
-
- /* Clear the cache map */
- FileObject->SectionObjectPointer->SharedCacheMap = NULL;
return TRUE;
}
@@ -200,7 +215,10 @@
IN BOOLEAN UninitializeCacheMaps)
{
IO_STATUS_BLOCK IOSB;
+ PNOCC_CACHE_MAP Map = (PNOCC_CACHE_MAP)SectionObjectPointer->SharedCacheMap;
CcFlushCache(SectionObjectPointer, FileOffset, Length, &IOSB);
+ if (UninitializeCacheMaps)
+ CcUninitializeCacheMap(Map->FileObject, NULL, NULL);
return NT_SUCCESS(IOSB.Status);
}
Modified: branches/arty-newcc/ntoskrnl/cache/pinsup.c
URL:
http://svn.reactos.org/svn/reactos/branches/arty-newcc/ntoskrnl/cache/pinsu…
==============================================================================
--- branches/arty-newcc/ntoskrnl/cache/pinsup.c [iso-8859-1] (original)
+++ branches/arty-newcc/ntoskrnl/cache/pinsup.c [iso-8859-1] Fri Aug 29 05:24:38 2008
@@ -455,10 +455,23 @@
if (!SectionObject)
{
PNOCC_CACHE_MAP Map =
(PNOCC_CACHE_MAP)FileObject->SectionObjectPointer->SharedCacheMap;
- LONG SectionSize = min(CACHE_STRIPE, Map->FileSizes.ValidDataLength.QuadPart -
Target.QuadPart);
- ASSERT(SectionSize > 0 && SectionSize <= CACHE_STRIPE);
+ ULONG SectionSize;
+
+ DPRINT("%08x: File size %x%x\n", FileObject->SectionObjectPointer,
Map->FileSizes.ValidDataLength.HighPart, Map->FileSizes.ValidDataLength.LowPart);
+
+ if (Map->FileSizes.ValidDataLength.QuadPart)
+ {
+ SectionSize = min(CACHE_STRIPE, Map->FileSizes.ValidDataLength.QuadPart -
Target.QuadPart);
+ }
+ else
+ {
+ SectionSize = CACHE_STRIPE;
+ }
+
DPRINT("Allocating a cache stripe at %x:%d\n",
Target.LowPart, SectionSize);
+ ASSERT(SectionSize <= CACHE_STRIPE);
+
Status = CcpAllocateSection
(FileObject,
SectionSize,
Modified: branches/arty-newcc/ntoskrnl/include/internal/cc.h
URL:
http://svn.reactos.org/svn/reactos/branches/arty-newcc/ntoskrnl/include/int…
==============================================================================
--- branches/arty-newcc/ntoskrnl/include/internal/cc.h [iso-8859-1] (original)
+++ branches/arty-newcc/ntoskrnl/include/internal/cc.h [iso-8859-1] Fri Aug 29 05:24:38
2008
@@ -132,6 +132,7 @@
LIST_ENTRY AssociatedBcb;
PFILE_OBJECT FileObject;
ULONG NumberOfMaps;
+ ULONG RefCount;
CC_FILE_SIZES FileSizes;
} NOCC_CACHE_MAP, *PNOCC_CACHE_MAP;
Modified: branches/arty-newcc/ntoskrnl/mm/section.c
URL:
http://svn.reactos.org/svn/reactos/branches/arty-newcc/ntoskrnl/mm/section.…
==============================================================================
--- branches/arty-newcc/ntoskrnl/mm/section.c [iso-8859-1] (original)
+++ branches/arty-newcc/ntoskrnl/mm/section.c [iso-8859-1] Fri Aug 29 05:24:38 2008
@@ -159,8 +159,6 @@
PIRP Irp = NULL;
KEVENT ReadWait;
PDEVICE_OBJECT DeviceObject = MmGetDeviceObjectForFile(FileObject);
- PCHAR BufferWalk;
- PHYSICAL_ADDRESS Page;
PIO_STACK_LOCATION IrpSp;
DPRINT1
@@ -220,13 +218,6 @@
((PCHAR)Buffer)[2] & 0xff,
((PCHAR)Buffer)[3] & 0xff);
- for (BufferWalk = (PCHAR)Buffer; BufferWalk < (PCHAR)Buffer + Length; BufferWalk
+= PAGE_SIZE)
- {
- Page = MmGetPhysicalAddress((PVOID)BufferWalk);
- DPRINT("Setting page clean: %x\n", Page.u.LowPart);
- //MmSetCleanAllRmaps((PFN_TYPE)(Page.QuadPart >> PAGE_SHIFT));
- }
-
return ReadStatus->Status;
}
@@ -243,8 +234,6 @@
PIRP Irp = NULL;
KEVENT ReadWait;
PDEVICE_OBJECT DeviceObject;
- PCHAR BufferWalk;
- PHYSICAL_ADDRESS Page;
PIO_STACK_LOCATION IrpSp;
ASSERT(FileObject);
@@ -308,12 +297,6 @@
ObDereferenceObject(FileObject);
DPRINT("Paging IO Done: %08x\n", ReadStatus->Status);
- for (BufferWalk = (PCHAR)Buffer; BufferWalk < (PCHAR)Buffer + Length; BufferWalk
+= PAGE_SIZE)
- {
- Page = MmGetPhysicalAddress((PVOID)BufferWalk);
- //MmSetCleanAllRmaps((PFN_TYPE)(Page.QuadPart >> PAGE_SHIFT));
- }
-
return ReadStatus->Status;
}
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