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- Allocate memory for mdl's for paging io from stack instead of the non paged pool.

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svn path=/trunk/; revision=9631
This commit is contained in:
Hartmut Birr 2004-06-06 08:36:31 +00:00
parent 3b09731efb
commit 353214e42e
5 changed files with 47 additions and 53 deletions
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38
reactos/ntoskrnl/cc/copy.c
View file

@ -1,4 +1,4 @@
/* $Id: copy.c,v 1.22 2004/06/06 07:52:22 hbirr Exp $
/* $Id: copy.c,v 1.23 2004/06/06 08:36:30 hbirr Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -33,6 +33,15 @@ static PHYSICAL_ADDRESS CcZeroPage = { 0 };
#endif
#define MAX_ZERO_LENGTH (256 * 1024)
#define MAX_RW_LENGTH (64 * 1024)
#if defined(__GNUC__)
void * alloca(size_t size);
#elif defined(_MSC_VER)
void* _alloca(size_t size);
#else
#error Unknown compiler for alloca intrinsic stack allocation "function"
#endif
/* FUNCTIONS *****************************************************************/
@ -67,6 +76,9 @@ ReadCacheSegmentChain(PBCB Bcb, ULONG ReadOffset, ULONG Length,
NTSTATUS Status;
ULONG TempLength;
KEVENT Event;
PMDL Mdl;
Mdl = alloca(MmSizeOfMdl(NULL, MAX_RW_LENGTH));
Status = CcRosGetCacheSegmentChain(Bcb, ReadOffset, Length, &head);
if (!NT_SUCCESS(Status))
@ -105,7 +117,6 @@ ReadCacheSegmentChain(PBCB Bcb, ULONG ReadOffset, ULONG Length,
{
PCACHE_SEGMENT current2;
ULONG current_size;
PMDL Mdl;
ULONG i;
ULONG offset;
@ -124,7 +135,7 @@ ReadCacheSegmentChain(PBCB Bcb, ULONG ReadOffset, ULONG Length,
/*
* Create an MDL which contains all their pages.
*/
Mdl = MmCreateMdl(NULL, NULL, current_size);
MmInitializeMdl(Mdl, NULL, current_size);
Mdl->MdlFlags |= (MDL_PAGES_LOCKED | MDL_IO_PAGE_READ);
current2 = current;
offset = 0;
@ -157,6 +168,7 @@ ReadCacheSegmentChain(PBCB Bcb, ULONG ReadOffset, ULONG Length,
KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
Status = Iosb.Status;
}
MmUnmapLockedPages(Mdl->MappedSystemVa, Mdl);
if (!NT_SUCCESS(Status) && Status != STATUS_END_OF_FILE)
{
while (current != NULL)
@ -206,8 +218,10 @@ ReadCacheSegment(PCACHE_SEGMENT CacheSeg)
{
Size = CacheSeg->Bcb->CacheSegmentSize;
}
Mdl = MmCreateMdl(NULL, CacheSeg->BaseAddress, Size);
Mdl = alloca(MmSizeOfMdl(CacheSeg->BaseAddress, Size));
MmInitializeMdl(Mdl, CacheSeg->BaseAddress, Size);
MmBuildMdlForNonPagedPool(Mdl);
Mdl->MdlFlags |= MDL_IO_PAGE_READ;
KeInitializeEvent(&Event, NotificationEvent, FALSE);
Status = IoPageRead(CacheSeg->Bcb->FileObject, Mdl, &SegOffset, & Event, &IoStatus);
if (Status == STATUS_PENDING)
@ -246,8 +260,10 @@ WriteCacheSegment(PCACHE_SEGMENT CacheSeg)
{
Size = CacheSeg->Bcb->CacheSegmentSize;
}
Mdl = MmCreateMdl(NULL, CacheSeg->BaseAddress, Size);
Mdl = alloca(MmSizeOfMdl(CacheSeg->BaseAddress, Size));
MmInitializeMdl(Mdl, CacheSeg->BaseAddress, Size);
MmBuildMdlForNonPagedPool(Mdl);
Mdl->MdlFlags |= MDL_IO_PAGE_READ;
KeInitializeEvent(&Event, NotificationEvent, FALSE);
Status = IoPageWrite(CacheSeg->Bcb->FileObject, Mdl, &SegOffset, &Event, &IoStatus);
if (Status == STATUS_PENDING)
@ -360,7 +376,7 @@ CcCopyRead (IN PFILE_OBJECT FileObject,
}
while (Length > 0)
{
TempLength = min(max(Bcb->CacheSegmentSize, 65536), Length);
TempLength = min(max(Bcb->CacheSegmentSize, MAX_RW_LENGTH), Length);
ReadCacheSegmentChain(Bcb, ReadOffset, TempLength, Buffer);
ReadLength += TempLength;
Length -= TempLength;
@ -533,6 +549,8 @@ CcZeroData (IN PFILE_OBJECT FileObject,
if (FileObject->SectionObjectPointer->SharedCacheMap == NULL)
{
/* File is not cached */
Mdl = alloca(MmSizeOfMdl(NULL, MAX_ZERO_LENGTH));
while (Length > 0)
{
@ -544,12 +562,7 @@ CcZeroData (IN PFILE_OBJECT FileObject,
{
CurrentLength = Length;
}
Mdl = MmCreateMdl(NULL, (PVOID)WriteOffset.u.LowPart, CurrentLength);
if (Mdl == NULL)
{
return(FALSE);
}
MmInitializeMdl(Mdl, (PVOID)WriteOffset.u.LowPart, CurrentLength);
Mdl->MdlFlags |= (MDL_PAGES_LOCKED | MDL_IO_PAGE_READ);
for (i = 0; i < ((Mdl->Size - sizeof(MDL)) / sizeof(ULONG)); i++)
{
@ -562,6 +575,7 @@ CcZeroData (IN PFILE_OBJECT FileObject,
KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
Status = Iosb.Status;
}
MmUnmapLockedPages(Mdl->MappedSystemVa, Mdl);
if (!NT_SUCCESS(Status))
{
return(FALSE);

4
reactos/ntoskrnl/include/internal/mm.h
View file

@ -368,9 +368,9 @@ extern MM_STATS MmStats;
PVOID
MmGetDirtyPagesFromWorkingSet(struct _EPROCESS* Process);
NTSTATUS
MmWriteToSwapPage(SWAPENTRY SwapEntry, PMDL Mdl);
MmWriteToSwapPage(SWAPENTRY SwapEntry, PHYSICAL_ADDRESS* Page);
NTSTATUS
MmReadFromSwapPage(SWAPENTRY SwapEntry, PMDL Mdl);
MmReadFromSwapPage(SWAPENTRY SwapEntry, PHYSICAL_ADDRESS* Page);
VOID
MmSetFlagsPage(PHYSICAL_ADDRESS PhysicalAddress, ULONG Flags);
ULONG

14
reactos/ntoskrnl/io/irp.c
View file

@ -1,4 +1,4 @@
/* $Id: irp.c,v 1.60 2004/04/20 23:14:35 gdalsnes Exp $
/* $Id: irp.c,v 1.61 2004/06/06 08:36:31 hbirr Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -294,11 +294,15 @@ IofCompleteRequest(PIRP Irp,
/* Windows NT File System Internals, page 165 */
if (Irp->Flags & (IRP_PAGING_IO|IRP_CLOSE_OPERATION))
{
if (Irp->Flags & IRP_PAGING_IO)
/*
* If MDL_IO_PAGE_READ is set, then the caller is responsible
* for deallocating of the mdl.
*/
if (Irp->Flags & IRP_PAGING_IO &&
Irp->MdlAddress &&
!(Irp->MdlAddress->MdlFlags & MDL_IO_PAGE_READ))
{
/* FIXME:
* The mdl should be freed by the caller!
*/
if (Irp->MdlAddress->MdlFlags & MDL_MAPPED_TO_SYSTEM_VA)
{
MmUnmapLockedPages(Irp->MdlAddress->MappedSystemVa, Irp->MdlAddress);

17
reactos/ntoskrnl/mm/anonmem.c
View file

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: anonmem.c,v 1.27 2004/04/10 22:35:25 gdalsnes Exp $
/* $Id: anonmem.c,v 1.28 2004/06/06 08:36:31 hbirr Exp $
*
* PROJECT: ReactOS kernel
* FILE: ntoskrnl/mm/anonmem.c
@ -46,7 +46,6 @@ MmWritePageVirtualMemory(PMADDRESS_SPACE AddressSpace,
{
SWAPENTRY SwapEntry;
LARGE_INTEGER PhysicalAddress;
PMDL Mdl;
NTSTATUS Status;
/*
@ -99,9 +98,7 @@ MmWritePageVirtualMemory(PMADDRESS_SPACE AddressSpace,
/*
* Write the page to the pagefile
*/
Mdl = MmCreateMdl(NULL, NULL, PAGE_SIZE);
MmBuildMdlFromPages(Mdl, (PULONG)&PhysicalAddress);
Status = MmWriteToSwapPage(SwapEntry, Mdl);
Status = MmWriteToSwapPage(SwapEntry, &PhysicalAddress);
if (!NT_SUCCESS(Status))
{
DPRINT1("MM: Failed to write to swap page (Status was 0x%.8X)\n",
@ -133,7 +130,6 @@ MmPageOutVirtualMemory(PMADDRESS_SPACE AddressSpace,
BOOL WasDirty;
SWAPENTRY SwapEntry;
NTSTATUS Status;
PMDL Mdl;
DPRINT("MmPageOutVirtualMemory(Address 0x%.8X) PID %d\n",
Address, MemoryArea->Process->UniqueProcessId);
@ -200,9 +196,7 @@ MmPageOutVirtualMemory(PMADDRESS_SPACE AddressSpace,
/*
* Write the page to the pagefile
*/
Mdl = MmCreateMdl(NULL, NULL, PAGE_SIZE);
MmBuildMdlFromPages(Mdl, (ULONG *)&PhysicalAddress.u.LowPart);
Status = MmWriteToSwapPage(SwapEntry, Mdl);
Status = MmWriteToSwapPage(SwapEntry, &PhysicalAddress);
if (!NT_SUCCESS(Status))
{
DPRINT1("MM: Failed to write to swap page (Status was 0x%.8X)\n",
@ -372,12 +366,9 @@ MmNotPresentFaultVirtualMemory(PMADDRESS_SPACE AddressSpace,
if (MmIsPageSwapEntry(NULL, Address))
{
SWAPENTRY SwapEntry;
PMDL Mdl;
MmDeletePageFileMapping(MemoryArea->Process, Address, &SwapEntry);
Mdl = MmCreateMdl(NULL, NULL, PAGE_SIZE);
MmBuildMdlFromPages(Mdl, (PULONG)&Page);
Status = MmReadFromSwapPage(SwapEntry, Mdl);
Status = MmReadFromSwapPage(SwapEntry, &Page);
if (!NT_SUCCESS(Status))
{
KEBUGCHECK(0);

27
reactos/ntoskrnl/mm/section.c
View file

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: section.c,v 1.150 2004/05/30 12:55:11 hbirr Exp $
/* $Id: section.c,v 1.151 2004/06/06 08:36:31 hbirr Exp $
*
* PROJECT: ReactOS kernel
* FILE: ntoskrnl/mm/section.c
@ -396,10 +396,7 @@ MmUnsharePageEntrySectionSegment(PSECTION_OBJECT Section,
* process and the current segment (also not within an other process).
*/
NTSTATUS Status;
PMDL Mdl;
Mdl = MmCreateMdl(NULL, NULL, PAGE_SIZE);
MmBuildMdlFromPages(Mdl, (PULONG)&Page);
Status = MmWriteToSwapPage(SavedSwapEntry, Mdl);
Status = MmWriteToSwapPage(SavedSwapEntry, &Page);
if (!NT_SUCCESS(Status))
{
DPRINT1("MM: Failed to write to swap page (Status was 0x%.8X)\n", Status);
@ -792,7 +789,6 @@ MmNotPresentFaultSectionView(PMADDRESS_SPACE AddressSpace,
* Must be private page we have swapped out.
*/
SWAPENTRY SwapEntry;
PMDL Mdl;
/*
* Sanity check
@ -813,9 +809,7 @@ MmNotPresentFaultSectionView(PMADDRESS_SPACE AddressSpace,
KEBUGCHECK(0);
}
Mdl = MmCreateMdl(NULL, NULL, PAGE_SIZE);
MmBuildMdlFromPages(Mdl, (PULONG)&Page);
Status = MmReadFromSwapPage(SwapEntry, Mdl);
Status = MmReadFromSwapPage(SwapEntry, &Page);
if (!NT_SUCCESS(Status))
{
DPRINT1("MmReadFromSwapPage failed, status = %x\n", Status);
@ -1078,7 +1072,6 @@ MmNotPresentFaultSectionView(PMADDRESS_SPACE AddressSpace,
else if (IS_SWAP_FROM_SSE(Entry))
{
SWAPENTRY SwapEntry;
PMDL Mdl;
SwapEntry = SWAPENTRY_FROM_SSE(Entry);
@ -1095,9 +1088,7 @@ MmNotPresentFaultSectionView(PMADDRESS_SPACE AddressSpace,
KEBUGCHECK(0);
}
Mdl = MmCreateMdl(NULL, NULL, PAGE_SIZE);
MmBuildMdlFromPages(Mdl, (PULONG)&Page);
Status = MmReadFromSwapPage(SwapEntry, Mdl);
Status = MmReadFromSwapPage(SwapEntry, &Page);
if (!NT_SUCCESS(Status))
{
KEBUGCHECK(0);
@ -1434,7 +1425,6 @@ MmPageOutSectionView(PMADDRESS_SPACE AddressSpace,
PHYSICAL_ADDRESS PhysicalAddress;
MM_SECTION_PAGEOUT_CONTEXT Context;
SWAPENTRY SwapEntry;
PMDL Mdl;
ULONG Entry;
ULONG FileOffset;
NTSTATUS Status;
@ -1695,9 +1685,7 @@ MmPageOutSectionView(PMADDRESS_SPACE AddressSpace,
/*
* Write the page to the pagefile
*/
Mdl = MmCreateMdl(NULL, NULL, PAGE_SIZE);
MmBuildMdlFromPages(Mdl, (PULONG)&PhysicalAddress);
Status = MmWriteToSwapPage(SwapEntry, Mdl);
Status = MmWriteToSwapPage(SwapEntry, &PhysicalAddress);
if (!NT_SUCCESS(Status))
{
DPRINT1("MM: Failed to write to swap page (Status was 0x%.8X)\n",
@ -1784,7 +1772,6 @@ MmWritePageSectionView(PMADDRESS_SPACE AddressSpace,
PMM_SECTION_SEGMENT Segment;
PHYSICAL_ADDRESS PhysicalAddress;
SWAPENTRY SwapEntry;
PMDL Mdl;
ULONG Entry;
BOOLEAN Private;
NTSTATUS Status;
@ -1900,9 +1887,7 @@ MmWritePageSectionView(PMADDRESS_SPACE AddressSpace,
/*
* Write the page to the pagefile
*/
Mdl = MmCreateMdl(NULL, NULL, PAGE_SIZE);
MmBuildMdlFromPages(Mdl, (PULONG)&PhysicalAddress);
Status = MmWriteToSwapPage(SwapEntry, Mdl);
Status = MmWriteToSwapPage(SwapEntry, &PhysicalAddress);
if (!NT_SUCCESS(Status))
{
DPRINT1("MM: Failed to write to swap page (Status was 0x%.8X)\n",