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[NTOS:CC] Fix Vacb size usage & check

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This commit is contained in:
Jérôme Gardou 2020-12-02 12:39:58 +01:00
parent c74cbf0c0b
commit 70c62aa2c9
1 changed files with 9 additions and 15 deletions
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24
ntoskrnl/cc/view.c
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@ -388,7 +388,6 @@ CcRosMarkDirtyVacb (
{
KIRQL oldIrql;
PROS_SHARED_CACHE_MAP SharedCacheMap;
ULONG Length = VACB_MAPPING_GRANULARITY;
SharedCacheMap = Vacb->SharedCacheMap;
@ -398,12 +397,9 @@ CcRosMarkDirtyVacb (
ASSERT(!Vacb->Dirty);
InsertTailList(&DirtyVacbListHead, &Vacb->DirtyVacbListEntry);
#if 0
if (Vacb->FileOffset.QuadPart + Length > SharedCacheMap->SectionSize.QuadPart)
Length = SharedCacheMap->SectionSize.QuadPart - Vacb->FileOffset.QuadPart;
#endif
CcTotalDirtyPages += PAGE_ROUND_UP(Length) / PAGE_SIZE;
Vacb->SharedCacheMap->DirtyPages += PAGE_ROUND_UP(Length) / PAGE_SIZE;
/* FIXME: There is no reason to account for the whole VACB. */
CcTotalDirtyPages += VACB_MAPPING_GRANULARITY / PAGE_SIZE;
Vacb->SharedCacheMap->DirtyPages += VACB_MAPPING_GRANULARITY / PAGE_SIZE;
CcRosVacbIncRefCount(Vacb);
/* Move to the tail of the LRU list */
@ -430,7 +426,6 @@ CcRosUnmarkDirtyVacb (
{
KIRQL oldIrql;
PROS_SHARED_CACHE_MAP SharedCacheMap;
ULONG Length = VACB_MAPPING_GRANULARITY;
SharedCacheMap = Vacb->SharedCacheMap;
@ -447,12 +442,8 @@ CcRosUnmarkDirtyVacb (
RemoveEntryList(&Vacb->DirtyVacbListEntry);
InitializeListHead(&Vacb->DirtyVacbListEntry);
#if 0
if (Vacb->FileOffset.QuadPart + Length > SharedCacheMap->SectionSize.QuadPart)
Length = SharedCacheMap->SectionSize.QuadPart - Vacb->FileOffset.QuadPart;
#endif
CcTotalDirtyPages -= PAGE_ROUND_UP(Length) / PAGE_SIZE;
Vacb->SharedCacheMap->DirtyPages -= PAGE_ROUND_UP(Length) / PAGE_SIZE;
CcTotalDirtyPages -= VACB_MAPPING_GRANULARITY / PAGE_SIZE;
Vacb->SharedCacheMap->DirtyPages -= VACB_MAPPING_GRANULARITY / PAGE_SIZE;
CcRosVacbDecRefCount(Vacb);
@ -718,8 +709,11 @@ CcRosEnsureVacbResident(
ASSERT((Offset + Length) <= VACB_MAPPING_GRANULARITY);
if ((Vacb->FileOffset.QuadPart + Offset) > Vacb->SharedCacheMap->FileSize.QuadPart)
if ((Vacb->FileOffset.QuadPart + Offset) > Vacb->SharedCacheMap->SectionSize.QuadPart)
{
DPRINT1("Vacb read beyond the file size!\n");
return FALSE;
}
BaseAddress = (PVOID)((ULONG_PTR)Vacb->BaseAddress + Offset);