[arty] 35972: Fix some of my late-night brain damage regarding starting caching. Factor out some common pinning and cache starting code. Use IoPageRead. We run the install to 100%, then fail. We leak pretty bad in here... I think pages aren't being freed when we unmap our cache sections.
6 Sep
2008
6 Sep
'08
2:20 a.m.
Author: arty
Date: Fri Sep 5 21:20:54 2008
New Revision: 35972
URL: http://svn.reactos.org/svn/reactos?rev=35972&view=rev
Log:
Fix some of my late-night brain damage regarding starting caching.
Factor out some common pinning and cache starting code.
Use IoPageRead.
We run the install to 100%, then fail.
We leak pretty bad in here... I think pages aren't being freed when we
unmap our cache sections.
Modified:
branches/arty-newcc/ntoskrnl/cache/cachesub.c
branches/arty-newcc/ntoskrnl/cache/fssup.c
branches/arty-newcc/ntoskrnl/cache/lazyrite.c
branches/arty-newcc/ntoskrnl/cache/pinsup.c
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 Sep 5 21:20:54 2008
@@ -167,12 +167,13 @@
PNOCC_BCB Bcb = (PNOCC_BCB)BcbVoid;
Bcb->Dirty = TRUE;
for (Buffer = Bcb->BaseAddress;
- Buffer < ((PCHAR)Bcb->BaseAddress) + Bcb->Length;
- Buffer += PAGE_SIZE)
- {
- /* Do a fake write on the buffer pages to mark them for mm */
- *Buffer ^= 0;
- }
+ Buffer < ((PCHAR)Bcb->BaseAddress) + Bcb->Length;
+ Buffer += PAGE_SIZE)
+ {
+ /* Do a fake write on the buffer pages to mark them for mm */
+ *Buffer ^= 0;
+ }
+ Bcb->Dirty = TRUE;
}
LARGE_INTEGER
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 Sep 5 21:20:54 2008
@@ -101,7 +101,6 @@
IN PCACHE_MANAGER_CALLBACKS Callbacks,
IN PVOID LazyWriteContext)
{
- DPRINT("Initializing file object for %wZ\n",
&FileObject->FileName);
CcpLock();
if (FileObject->SectionObjectPointer->SharedCacheMap)
{
@@ -111,6 +110,8 @@
else
{
PNOCC_CACHE_MAP Map = ExAllocatePool(NonPagedPool, sizeof(NOCC_CACHE_MAP));
+ DPRINT("Initializing file object for (%p) %wZ\n", FileObject,
&FileObject->FileName);
+ ASSERT(FileObject);
FileObject->SectionObjectPointer->SharedCacheMap = Map;
Map->RefCount = 1;
ObReferenceObject(FileObject);
Modified: branches/arty-newcc/ntoskrnl/cache/lazyrite.c
URL:
http://svn.reactos.org/svn/reactos/branches/arty-newcc/ntoskrnl/cache/lazyr…
==============================================================================
--- branches/arty-newcc/ntoskrnl/cache/lazyrite.c [iso-8859-1] (original)
+++ branches/arty-newcc/ntoskrnl/cache/lazyrite.c [iso-8859-1] Fri Sep 5 21:20:54 2008
@@ -9,7 +9,7 @@
/* INCLUDES *******************************************************************/
#include <ntoskrnl.h>
-//#define NDEBUG
+#define NDEBUG
#include <debug.h>
/* GLOBALS ********************************************************************/
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 Sep 5 21:20:54 2008
@@ -383,6 +383,64 @@
BOOLEAN
NTAPI
+CcpStartCaching(PFILE_OBJECT FileObject)
+{
+ FILE_STANDARD_INFORMATION FileInfo;
+ ULONG Information;
+ NTSTATUS Status;
+ CC_FILE_SIZES FileSizes;
+
+ if (!FileObject->SectionObjectPointer->SharedCacheMap)
+ {
+ DPRINT("CcpStartCaching %p\n", FileObject);
+ Status = IoQueryFileInformation
+ (FileObject,
+ FileStandardInformation,
+ sizeof(FILE_STANDARD_INFORMATION),
+ &FileInfo,
+ &Information);
+
+ if (!NT_SUCCESS(Status))
+ {
+ return FALSE;
+ }
+
+ Status = IoQueryFileInformation
+ (FileObject,
+ FileAllocationInformation,
+ sizeof(LARGE_INTEGER),
+ &FileSizes.AllocationSize,
+ &Information);
+
+ if (!NT_SUCCESS(Status))
+ {
+ return FALSE;
+ }
+
+ FileSizes.ValidDataLength = FileInfo.EndOfFile;
+ FileSizes.FileSize = FileInfo.EndOfFile;
+
+ DPRINT("Initializing -> File Sizes: VALID %08x%08x FILESIZE %08x%08x ALLOC
%08x%08x\n",
+ FileSizes.ValidDataLength.HighPart,
+ FileSizes.ValidDataLength.LowPart,
+ FileSizes.FileSize.HighPart,
+ FileSizes.FileSize.LowPart,
+ FileSizes.AllocationSize.HighPart,
+ FileSizes.AllocationSize.LowPart);
+
+ CcInitializeCacheMap
+ (FileObject,
+ &FileSizes,
+ FALSE,
+ NULL,
+ NULL);
+ }
+
+ return TRUE;
+}
+
+BOOLEAN
+NTAPI
CcpMapData
(IN PNOCC_CACHE_MAP Map,
IN PLARGE_INTEGER FileOffset,
@@ -418,7 +476,6 @@
/* Find an accomodating section */
//DPRINT("Selected BCB #%x\n", BcbHead);
Bcb = &CcCacheSections[BcbHead];
- SectionObject = Bcb->SectionObject;
BcbHead = CcpFindMatchingMap(Bcb, FileOffset, Length);
if (BcbHead == INVALID_CACHE)
@@ -433,6 +490,7 @@
else
{
Bcb = &CcCacheSections[BcbHead];
+ SectionObject = Bcb->SectionObject;
Success = TRUE;
*BcbResult = Bcb;
*Buffer = ((PCHAR)Bcb->BaseAddress) + (int)(FileOffset->QuadPart -
Bcb->FileOffset.QuadPart);
@@ -457,7 +515,7 @@
PNOCC_CACHE_MAP Map =
(PNOCC_CACHE_MAP)FileObject->SectionObjectPointer->SharedCacheMap;
ULONG SectionSize;
- DPRINT("%08x: File size %x%x\n", FileObject->SectionObjectPointer,
Map->FileSizes.ValidDataLength.HighPart, Map->FileSizes.ValidDataLength.LowPart);
+ DPRINT("%08x: File size %08x%08x\n", FileObject->SectionObjectPointer,
Map->FileSizes.ValidDataLength.HighPart, Map->FileSizes.ValidDataLength.LowPart);
if (Map->FileSizes.ValidDataLength.QuadPart)
{
@@ -508,7 +566,7 @@
goto cleanup;
}
- //DPRINT("Selected BCB #%x\n", BcbHead);
+ DPRINT("Selected BCB #%x\n", BcbHead);
Bcb = &CcCacheSections[BcbHead];
Status = CcpMapSegment(BcbHead);
@@ -545,14 +603,7 @@
OUT PVOID *BcbResult,
OUT PVOID *Buffer)
{
- if (!(PNOCC_CACHE_MAP)FileObject->SectionObjectPointer->SharedCacheMap)
- {
- PNOCC_CACHE_MAP Map = ExAllocatePool(NonPagedPool, sizeof(NOCC_CACHE_MAP));
- FileObject->SectionObjectPointer->SharedCacheMap = Map;
- Map->FileObject = FileObject;
- InitializeListHead(&Map->AssociatedBcb);
- }
-
+ if (!CcpStartCaching(FileObject)) return FALSE;
return CcpMapData
((PNOCC_CACHE_MAP)FileObject->SectionObjectPointer->SharedCacheMap,
FileOffset,
@@ -570,18 +621,19 @@
IN ULONG Flags,
IN OUT PVOID *Bcb)
{
- BOOLEAN Wait = Flags & PIN_WAIT;
+ BOOLEAN Wait = Flags == TRUE ? PIN_WAIT : Flags & PIN_WAIT;
BOOLEAN Exclusive = Flags & PIN_EXCLUSIVE;
BOOLEAN Result;
ULONG BcbHead;
PNOCC_BCB TheBcb;
PVOID Buffer;
+ if (!CcpStartCaching(FileObject)) return FALSE;
Result = CcMapData(FileObject, FileOffset, Length, Wait ? MAP_WAIT : 0, Bcb,
&Buffer);
if (!Result) return FALSE;
- TheBcb = (PNOCC_BCB)Bcb;
+ TheBcb = (PNOCC_BCB)*Bcb;
BcbHead = TheBcb - CcCacheSections;
CcpLock();
@@ -591,7 +643,10 @@
CcpMarkForExclusive(BcbHead);
}
else
+ {
+ DPRINT("Reference #%x\n", BcbHead);
CcpReferenceCache(BcbHead);
+ }
CcpUnlock();
if (Exclusive)
@@ -630,31 +685,25 @@
OUT PVOID *Bcb,
OUT PVOID *Buffer)
{
- BOOLEAN Result = CcMapData(FileObject, FileOffset, Length, Flags, Bcb, Buffer);
+ PNOCC_BCB RealBcb;
+ BOOLEAN Result;
+
+ if (!CcpStartCaching(FileObject)) return FALSE;
+
+ Result = CcPinMappedData
+ (FileObject,
+ FileOffset,
+ Length,
+ Flags,
+ Bcb);
if (Result)
{
- PNOCC_BCB TheBcb = (PNOCC_BCB)*Bcb;
- if (!TheBcb->Pinned)
- {
- TheBcb->Pinned = IoAllocateMdl
- (TheBcb->BaseAddress,
- TheBcb->Length,
- FALSE,
- FALSE,
- NULL);
- _SEH_TRY
- {
- MmProbeAndLockPages(TheBcb->Pinned, KernelMode, IoReadAccess);
- }
- _SEH_HANDLE
- {
- IoFreeMdl(TheBcb->Pinned);
- TheBcb->Pinned = NULL;
- Result = FALSE;
- }
- _SEH_END;
- }
+ CcpLock();
+ /* Find out if any range is a superset of what we want */
+ RealBcb = *Bcb;
+ *Buffer = ((PCHAR)RealBcb->BaseAddress) + (int)(FileOffset->QuadPart -
RealBcb->FileOffset.QuadPart);
+ CcpUnlock();
}
return Result;
@@ -670,32 +719,25 @@
OUT PVOID *Bcb,
OUT PVOID *Buffer)
{
- BOOLEAN Result = CcMapData(FileObject, FileOffset, Length, Flags, Bcb, Buffer);
+ BOOLEAN Result;
+ PNOCC_BCB RealBcb;
+
+ ASSERT(!Zero);
+
+ Result = CcPinRead
+ (FileObject,
+ FileOffset,
+ Length,
+ Flags,
+ Bcb,
+ Buffer);
if (Result)
{
- PNOCC_BCB TheBcb = (PNOCC_BCB)*Bcb;
- if (!TheBcb->Pinned)
- {
- TheBcb->Pinned = IoAllocateMdl
- (TheBcb->BaseAddress,
- TheBcb->Length,
- FALSE,
- FALSE,
- NULL);
- _SEH_TRY
- {
- MmProbeAndLockPages(TheBcb->Pinned, KernelMode, IoReadAccess);
- }
- _SEH_HANDLE
- {
- IoFreeMdl(TheBcb->Pinned);
- TheBcb->Pinned = NULL;
- TheBcb->Dirty = TRUE;
- Result = FALSE;
- }
- _SEH_END;
- }
+ CcpLock();
+ RealBcb = *Bcb;
+ RealBcb->Dirty = TRUE;
+ CcpUnlock();
}
return Result;
@@ -707,7 +749,9 @@
{
PNOCC_BCB RealBcb = (PNOCC_BCB)Bcb;
ULONG Selected = RealBcb - CcCacheSections;
+
DPRINT("CcUnpinData Bcb #%x (RefCount %d)\n", Selected,
RealBcb->RefCount);
+
CcpLock();
if (RealBcb->RefCount <= 2)
{
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 Sep 5 21:20:54 2008
@@ -147,45 +147,36 @@
ULONG Length,
PIO_STATUS_BLOCK ReadStatus)
{
- NTSTATUS Status;
- PIRP Irp = NULL;
+ PMDL Mdl;
KEVENT ReadWait;
- PDEVICE_OBJECT DeviceObject = MmGetDeviceObjectForFile(FileObject);
- PIO_STACK_LOCATION IrpSp;
-
- DPRINT1
- ("PAGING READ File %wZ Offset %x Length %d\n",
- &FileObject->FileName,
- FileOffset->u.LowPart,
- Length);
-
- KeInitializeEvent(&ReadWait, NotificationEvent, FALSE);
-
- Irp = IoBuildAsynchronousFsdRequest
- (IRP_MJ_READ,
- DeviceObject,
- Buffer,
- Length,
- FileOffset,
- ReadStatus);
-
- if (!Irp)
+ NTSTATUS Status = STATUS_SUCCESS;
+
+ KeInitializeEvent(&ReadWait, SynchronizationEvent, FALSE);
+
+ Mdl = IoAllocateMdl(Buffer, Length, FALSE, TRUE, NULL);
+
+ if (!Mdl) return STATUS_NO_MEMORY;
+
+ _SEH_TRY
{
- return STATUS_NO_MEMORY;
+ /* Allocate an MDL */
+ Mdl = IoAllocateMdl(Buffer, Length, FALSE, TRUE, NULL);
+ MmProbeAndLockPages(Mdl, KernelMode, IoWriteAccess);
+ }
+ _SEH_HANDLE
+ {
+ /* Allocating failed, clean up */
+ Status = _SEH_GetExceptionCode();
+ }
+ _SEH_END;
+
+ if (!NT_SUCCESS(Status))
+ {
+ IoFreeMdl(Mdl);
+ return Status;
}
- Irp->Flags |= IRP_PAGING_IO | IRP_SYNCHRONOUS_PAGING_IO | IRP_NOCACHE;
-
- ObReferenceObject(FileObject);
-
- Irp->UserEvent = &ReadWait;
- Irp->Tail.Overlay.OriginalFileObject = FileObject;
- Irp->Tail.Overlay.Thread = PsGetCurrentThread();
- IrpSp = IoGetNextIrpStackLocation(Irp);
- IrpSp->FileObject = FileObject;
- IrpSp->CompletionRoutine = MiSimpleReadComplete;
-
- Status = IoCallDriver(DeviceObject, Irp);
+ Status = IoPageRead(FileObject, Mdl, FileOffset, &ReadWait, ReadStatus);
if (Status == STATUS_PENDING)
{
if (!NT_SUCCESS
@@ -197,14 +188,16 @@
NULL)))
{
DPRINT1("Warning: Failed to wait for synchronous IRP\n");
- ASSERT(FALSE);
- ObDereferenceObject(FileObject);
+ MmUnlockPages(Mdl);
+ IoFreeMdl(Mdl);
return Status;
}
}
-
- ObDereferenceObject(FileObject);
-
+
+ DPRINT("MmUnlockPages(%p)\n", Mdl);
+ MmUnlockPages(Mdl);
+ IoFreeMdl(Mdl);
+
DPRINT("Paging IO Done: %08x [%02x %02x %02x %02x ...]\n",
ReadStatus->Status,
((PCHAR)Buffer)[0] & 0xff,
((PCHAR)Buffer)[1] & 0xff,
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