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[NTOSKRNL]

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- Don't page out locked pages
- Fixes random failed assertions in MmUnlockPages

svn path=/trunk/; revision=54648
This commit is contained in:
Cameron Gutman 2011-12-14 17:53:15 +00:00
parent f4065b5b2a
commit c6b88aa125
2 changed files with 26 additions and 0 deletions
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14
reactos/ntoskrnl/mm/anonmem.c
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@ -75,6 +75,20 @@ MmPageOutVirtualMemory(PMMSUPPORT AddressSpace,
return(STATUS_UNSUCCESSFUL);
}
/*
* Check the reference count to ensure this page can be paged out
*/
Page = MmGetPfnForProcess(Process, Address);
if (MmGetReferenceCountPage(Page) != 1)
{
DPRINT1("Cannot page out locked virtual memory page: 0x%p (RefCount: %d)\n",
Page, MmGetReferenceCountPage(Page));
PageOp->Status = STATUS_UNSUCCESSFUL;
KeSetEvent(&PageOp->CompletionEvent, IO_NO_INCREMENT, FALSE);
MmReleasePageOp(PageOp);
return(STATUS_UNSUCCESSFUL);
}
/*
* Disable the virtual mapping.
*/

12
reactos/ntoskrnl/mm/section.c
View file

@ -2106,6 +2106,18 @@ MmPageOutSectionView(PMMSUPPORT AddressSpace,
Page = MmGetPfnForProcess(Process, Address);
SwapEntry = MmGetSavedSwapEntryPage(Page);
/*
* Check the reference count to ensure this page can be paged out
*/
if (MmGetReferenceCountPage(Page) != 1)
{
DPRINT1("Cannot page out locked section page: 0x%p (RefCount: %d)\n",
Page, MmGetReferenceCountPage(Page));
PageOp->Status = STATUS_UNSUCCESSFUL;
MmspCompleteAndReleasePageOp(PageOp);
return STATUS_UNSUCCESSFUL;
}
/*
* Prepare the context structure for the rmap delete call.
*/