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- Don't allow a locked page to be paged out

svn path=/trunk/; revision=56047
This commit is contained in:
Cameron Gutman 2012-03-05 19:15:15 +00:00
parent 76f7011ac8
commit 18a6ac6ae4
1 changed files with 7 additions and 3 deletions
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10
reactos/ntoskrnl/cache/section/swapout.c vendored
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@ -113,6 +113,13 @@ MmFinalizeSectionPageOut
BOOLEAN WriteZero = FALSE, WritePage = FALSE; BOOLEAN WriteZero = FALSE, WritePage = FALSE;
SWAPENTRY Swap = MmGetSavedSwapEntryPage(Page); SWAPENTRY Swap = MmGetSavedSwapEntryPage(Page);
/* Bail early if the reference count isn't where we need it */
if (MmGetReferenceCountPage(Page) != 1)
{
DPRINT1("Cannot page out locked page %x with ref count %d\n", Page, MmGetReferenceCountPage(Page));
return STATUS_UNSUCCESSFUL;
}
MmLockSectionSegment(Segment); MmLockSectionSegment(Segment);
(void)InterlockedIncrementUL(&Segment->ReferenceCount); (void)InterlockedIncrementUL(&Segment->ReferenceCount);
@ -158,9 +165,6 @@ MmFinalizeSectionPageOut
{ {
DPRINT("Removing page %x for real\n", Page); DPRINT("Removing page %x for real\n", Page);
MmSetSavedSwapEntryPage(Page, 0); MmSetSavedSwapEntryPage(Page, 0);
if (MmGetReferenceCountPage(Page) != 1) {
DPRINT1("ALERT: Page %x about to be evicted with ref count %d\n", Page, MmGetReferenceCountPage(Page));
}
MmReleasePageMemoryConsumer(MC_CACHE, Page); MmReleasePageMemoryConsumer(MC_CACHE, Page);
} }