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Lock always the address space if we changing the virtual mapping.

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This is necessary because we can create or remove a page table.

svn path=/trunk/; revision=18848
This commit is contained in:
Hartmut Birr 2005-10-29 14:09:00 +00:00
parent d74ef35a60
commit 470db6b8eb
1 changed files with 5 additions and 1 deletions
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6
reactos/ntoskrnl/mm/anonmem.c
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@ -171,6 +171,7 @@ MmPageOutVirtualMemory(PMADDRESS_SPACE AddressSpace,
*/
if (!WasDirty)
{
MmLockAddressSpace(AddressSpace);
MmDeleteVirtualMapping(AddressSpace->Process, Address, FALSE, NULL, NULL);
MmDeleteAllRmaps(Page, NULL, NULL);
if ((SwapEntry = MmGetSavedSwapEntryPage(Page)) != 0)
@ -178,6 +179,7 @@ MmPageOutVirtualMemory(PMADDRESS_SPACE AddressSpace,
MmCreatePageFileMapping(AddressSpace->Process, Address, SwapEntry);
MmSetSavedSwapEntryPage(Page, 0);
}
MmUnlockAddressSpace(AddressSpace);
MmReleasePageMemoryConsumer(MC_USER, Page);
PageOp->Status = STATUS_SUCCESS;
KeSetEvent(&PageOp->CompletionEvent, IO_NO_INCREMENT, FALSE);
@ -222,8 +224,10 @@ MmPageOutVirtualMemory(PMADDRESS_SPACE AddressSpace,
* Otherwise we have succeeded, free the page
*/
DPRINT("MM: Swapped out virtual memory page 0x%.8X!\n", Page << PAGE_SHIFT);
MmLockAddressSpace(AddressSpace);
MmDeleteVirtualMapping(AddressSpace->Process, Address, FALSE, NULL, NULL);
MmCreatePageFileMapping(AddressSpace->Process, Address, SwapEntry);
MmUnlockAddressSpace(AddressSpace);
MmDeleteAllRmaps(Page, NULL, NULL);
MmSetSavedSwapEntryPage(Page, 0);
MmReleasePageMemoryConsumer(MC_USER, Page);
@ -997,7 +1001,7 @@ MmQueryAnonMem(PMEMORY_AREA MemoryArea,
Info->BaseAddress = RegionBase;
Info->AllocationBase = MemoryArea->StartingAddress;
Info->AllocationProtect = MemoryArea->Attributes;
Info->RegionSize = (char*)RegionBase + Region->Length - (char*)Info->BaseAddress;
Info->RegionSize = Region->Length;
Info->State = Region->Type;
Info->Protect = Region->Protect;
Info->Type = MEM_PRIVATE;