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* Disabled all calls to MmEnableVirtualMapping/MmDisableVirtualMapping,

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there is no difference for the page entry between a
  disabled mapping and a swap entry.

svn path=/trunk/; revision=3698
This commit is contained in:
Hartmut Birr 2002-11-05 20:31:34 +00:00
parent fb46b3c16a
commit 4096437ab3
1 changed files with 29 additions and 7 deletions
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36
reactos/ntoskrnl/mm/anonmem.c
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@ -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 1.7 2002/10/01 19:27:22 chorns Exp $
/* $Id: anonmem.c,v 1.8 2002/11/05 20:31:34 hbirr Exp $
*
* PROJECT: ReactOS kernel
* FILE: ntoskrnl/mm/anonmem.c
@ -134,6 +134,7 @@ MmPageOutVirtualMemory(PMADDRESS_SPACE AddressSpace,
SWAPENTRY SwapEntry;
NTSTATUS Status;
PMDL Mdl;
ULONG flProtect;
DPRINT("MmPageOutVirtualMemory(Address 0x%.8X) PID %d\n",
Address, MemoryArea->Process->UniqueProcessId);
@ -152,8 +153,15 @@ MmPageOutVirtualMemory(PMADDRESS_SPACE AddressSpace,
/*
* Disable the virtual mapping.
*/
#if 0
MmDisableVirtualMapping(MemoryArea->Process, Address,
&WasDirty, &PhysicalAddress);
#else
flProtect = MmGetPageProtect(MemoryArea->Process, Address);
MmDeleteVirtualMapping(MemoryArea->Process, Address, FALSE,
&WasDirty, &PhysicalAddress);
#endif
if (PhysicalAddress.QuadPart == 0)
{
KeBugCheck(0);
@ -164,7 +172,9 @@ MmPageOutVirtualMemory(PMADDRESS_SPACE AddressSpace,
*/
if (!WasDirty)
{
#if 0
MmDeleteVirtualMapping(MemoryArea->Process, Address, FALSE, NULL, NULL);
#endif
MmDeleteAllRmaps(PhysicalAddress, NULL, NULL);
if ((SwapEntry = MmGetSavedSwapEntryPage(PhysicalAddress)) != 0)
{
@ -188,7 +198,12 @@ MmPageOutVirtualMemory(PMADDRESS_SPACE AddressSpace,
if (SwapEntry == 0)
{
MmShowOutOfSpaceMessagePagingFile();
#if 0
MmEnableVirtualMapping(MemoryArea->Process, Address);
#else
MmCreateVirtualMapping(MemoryArea->Process, Address,
flProtect, PhysicalAddress, TRUE);
#endif
PageOp->Status = STATUS_UNSUCCESSFUL;
KeSetEvent(&PageOp->CompletionEvent, IO_NO_INCREMENT, FALSE);
MmReleasePageOp(PageOp);
@ -200,13 +215,18 @@ MmPageOutVirtualMemory(PMADDRESS_SPACE AddressSpace,
* Write the page to the pagefile
*/
Mdl = MmCreateMdl(NULL, NULL, PAGE_SIZE);
MmBuildMdlFromPages(Mdl, (PULONG)&PhysicalAddress);
MmBuildMdlFromPages(Mdl, &PhysicalAddress.u.LowPart);
Status = MmWriteToSwapPage(SwapEntry, Mdl);
if (!NT_SUCCESS(Status))
{
DPRINT1("MM: Failed to write to swap page (Status was 0x%.8X)\n",
Status);
#if 0
MmEnableVirtualMapping(MemoryArea->Process, Address);
#else
MmCreateVirtualMapping(MemoryArea->Process, Address,
flProtect, PhysicalAddress, TRUE);
#endif
PageOp->Status = STATUS_UNSUCCESSFUL;
KeSetEvent(&PageOp->CompletionEvent, IO_NO_INCREMENT, FALSE);
MmReleasePageOp(PageOp);
@ -217,7 +237,9 @@ MmPageOutVirtualMemory(PMADDRESS_SPACE AddressSpace,
* Otherwise we have succeeded, free the page
*/
DPRINT("MM: Swapped out virtual memory page 0x%.8X!\n", PhysicalAddress);
#if 0
MmDeleteVirtualMapping(MemoryArea->Process, Address, FALSE, NULL, NULL);
#endif
MmCreatePageFileMapping(MemoryArea->Process, Address, SwapEntry);
MmDeleteAllRmaps(PhysicalAddress, NULL, NULL);
MmSetSavedSwapEntryPage(PhysicalAddress, 0);
@ -439,7 +461,7 @@ MmModifyAttributes(PMADDRESS_SPACE AddressSpace,
{
ULONG i;
for (i=0; i <= (RegionSize/PAGE_SIZE); i++)
for (i=0; i < PAGE_ROUND_UP(RegionSize)/PAGE_SIZE; i++)
{
LARGE_INTEGER PhysicalAddr;
@ -485,7 +507,7 @@ MmModifyAttributes(PMADDRESS_SPACE AddressSpace,
{
ULONG i;
for (i=0; i <= (RegionSize/PAGE_SIZE); i++)
for (i=0; i < PAGE_ROUND_UP(RegionSize)/PAGE_SIZE; i++)
{
if (MmIsPagePresent(AddressSpace->Process,
BaseAddress + (i*PAGE_SIZE)))
@ -581,7 +603,7 @@ NtAllocateVirtualMemory(IN HANDLE ProcessHandle,
if (PBaseAddress != 0)
{
MemoryArea = MmOpenMemoryAreaByAddress(&Process->AddressSpace,
MemoryArea = MmOpenMemoryAreaByAddress(AddressSpace,
BaseAddress);
if (MemoryArea != NULL &&
@ -589,7 +611,7 @@ NtAllocateVirtualMemory(IN HANDLE ProcessHandle,
MemoryArea->Length >= RegionSize)
{
Status =
MmAlterRegion(&Process->AddressSpace,
MmAlterRegion(AddressSpace,
MemoryArea->BaseAddress,
&MemoryArea->Data.VirtualMemoryData.RegionListHead,
PBaseAddress, RegionSize,
@ -690,7 +712,7 @@ MmFreeVirtualMemory(PEPROCESS Process,
*/
if (MemoryArea->PageOpCount > 0)
{
for (i = 0; i < (PAGE_ROUND_UP(MemoryArea->Length) / PAGE_SIZE); i++)
for (i = 0; i < PAGE_ROUND_UP(MemoryArea->Length) / PAGE_SIZE; i++)
{
PMM_PAGEOP PageOp;