[ros-diffs] [sginsberg] 43240: - Fix recursive spinlock acquisition in Mm caused by locking inconsistency between ARM3 and the old ReactOS Mm. The old Mm calls certain routines to modify PFN entries (lock, unlock, reference, dereference, etc) and acquires/releases the PFN lock inside those functions (which is extremely inefficient as you can't, for example, have to acquire/release the PFN lock twice to reference and lock the same page), while ARM3 synchronizes differently and holds the lock while calling those routines, resulting in a recursive lock attempt on MP (which works on UP because spinlocks are just IRQL raise/lower there). Move out locking from MmAllocPage, MmReference/DereferencePage and MmLock/UnlockPage to the callers to be consistent with ARM3. - Add missing PFN locking to MmFreePagesFromMdl and MiAllocatePoolPages. - Get rid of MmLockPageUnsafe and MmReferencePageUnsafe. The "safe" routines just forwarded to the unsafe versions -- call them directly instead. Remove unused MmAcquirePageListLock/MmReleasePageListLock.
sginsberg at svn.reactos.org
sginsberg at svn.reactos.org
Wed Sep 30 20:24:00 CEST 2009
Author: sginsberg
Date: Wed Sep 30 20:24:00 2009
New Revision: 43240
URL: http://svn.reactos.org/svn/reactos?rev=43240&view=rev
Log:
- Fix recursive spinlock acquisition in Mm caused by locking inconsistency between ARM3 and the old ReactOS Mm. The old Mm calls certain routines to modify PFN entries (lock, unlock, reference, dereference, etc) and acquires/releases the PFN lock inside those functions (which is extremely inefficient as you can't, for example, have to acquire/release the PFN lock twice to reference and lock the same page), while ARM3 synchronizes differently and holds the lock while calling those routines, resulting in a recursive lock attempt on MP (which works on UP because spinlocks are just IRQL raise/lower there). Move out locking from MmAllocPage, MmReference/DereferencePage and MmLock/UnlockPage to the callers to be consistent with ARM3.
- Add missing PFN locking to MmFreePagesFromMdl and MiAllocatePoolPages.
- Get rid of MmLockPageUnsafe and MmReferencePageUnsafe. The "safe" routines just forwarded to the unsafe versions -- call them directly instead. Remove unused MmAcquirePageListLock/MmReleasePageListLock.
Modified:
trunk/reactos/ntoskrnl/include/internal/mm.h
trunk/reactos/ntoskrnl/mm/ARM3/mdlsup.c
trunk/reactos/ntoskrnl/mm/ARM3/pool.c
trunk/reactos/ntoskrnl/mm/anonmem.c
trunk/reactos/ntoskrnl/mm/balance.c
trunk/reactos/ntoskrnl/mm/freelist.c
trunk/reactos/ntoskrnl/mm/mmfault.c
trunk/reactos/ntoskrnl/mm/section.c
Modified: trunk/reactos/ntoskrnl/include/internal/mm.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/include/internal/mm.h?rev=43240&r1=43239&r2=43240&view=diff
==============================================================================
--- trunk/reactos/ntoskrnl/include/internal/mm.h [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/include/internal/mm.h [iso-8859-1] Wed Sep 30 20:24:00 2009
@@ -1095,32 +1095,11 @@
VOID
NTAPI
-MmLockPageUnsafe(PFN_TYPE Page);
-
-VOID
-NTAPI
MmUnlockPage(PFN_TYPE Page);
ULONG
NTAPI
MmGetLockCountPage(PFN_TYPE Page);
-
-static
-__inline
-KIRQL
-NTAPI
-MmAcquirePageListLock()
-{
- return KeAcquireQueuedSpinLock(LockQueuePfnLock);
-}
-
-FORCEINLINE
-VOID
-NTAPI
-MmReleasePageListLock(KIRQL oldIrql)
-{
- KeReleaseQueuedSpinLock(LockQueuePfnLock, oldIrql);
-}
VOID
NTAPI
@@ -1342,10 +1321,6 @@
VOID
NTAPI
MmReferencePage(PFN_TYPE Page);
-
-VOID
-NTAPI
-MmReferencePageUnsafe(PFN_TYPE Page);
ULONG
NTAPI
Modified: trunk/reactos/ntoskrnl/mm/ARM3/mdlsup.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/ARM3/mdlsup.c?rev=43240&r1=43239&r2=43240&view=diff
==============================================================================
--- trunk/reactos/ntoskrnl/mm/ARM3/mdlsup.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/ARM3/mdlsup.c [iso-8859-1] Wed Sep 30 20:24:00 2009
@@ -215,6 +215,7 @@
PPFN_NUMBER Pages;
LONG NumberOfPages;
PMMPFN Pfn1;
+ KIRQL OldIrql;
DPRINT("Freeing MDL: %p\n", Mdl);
//
@@ -229,7 +230,12 @@
//
Base = (PVOID)((ULONG_PTR)Mdl->StartVa + Mdl->ByteOffset);
NumberOfPages = ADDRESS_AND_SIZE_TO_SPAN_PAGES(Base, Mdl->ByteCount);
-
+
+ //
+ // Acquire PFN lock
+ //
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
+
//
// Loop all the MDL pages
//
@@ -268,7 +274,12 @@
//
*Pages++ = -1;
} while (--NumberOfPages != 0);
-
+
+ //
+ // Release the lock
+ //
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
+
//
// Remove the pages locked flag
//
Modified: trunk/reactos/ntoskrnl/mm/ARM3/pool.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/ARM3/pool.c?rev=43240&r1=43239&r2=43240&view=diff
==============================================================================
--- trunk/reactos/ntoskrnl/mm/ARM3/pool.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/ARM3/pool.c [iso-8859-1] Wed Sep 30 20:24:00 2009
@@ -141,6 +141,7 @@
PMMPFN Pfn1;
PVOID BaseVa;
PMMFREE_POOL_ENTRY FreeEntry;
+ PKSPIN_LOCK_QUEUE LockQueue;
//
// Figure out how big the allocation is in pages
@@ -285,7 +286,8 @@
//
// Lock the PFN database too
//
- //KeAcquireQueuedSpinLockAtDpcLevel(LockQueuePfnLock);
+ LockQueue = &KeGetCurrentPrcb()->LockQueue[LockQueuePfnLock];
+ KeAcquireQueuedSpinLockAtDpcLevel(LockQueue);
//
// Loop the pages
@@ -326,7 +328,7 @@
//
// Release the PFN and nonpaged pool lock
//
- //KeReleaseQueuedSpinLockFromDpcLevel(LockQueuePfnLock);
+ KeReleaseQueuedSpinLockFromDpcLevel(LockQueue);
KeReleaseQueuedSpinLock(LockQueueMmNonPagedPoolLock, OldIrql);
//
Modified: trunk/reactos/ntoskrnl/mm/anonmem.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/anonmem.c?rev=43240&r1=43239&r2=43240&view=diff
==============================================================================
--- trunk/reactos/ntoskrnl/mm/anonmem.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/anonmem.c [iso-8859-1] Wed Sep 30 20:24:00 2009
@@ -258,6 +258,7 @@
PMM_REGION Region;
PMM_PAGEOP PageOp;
PEPROCESS Process = MmGetAddressSpaceOwner(AddressSpace);
+ KIRQL OldIrql;
/*
* There is a window between taking the page fault and locking the
@@ -268,7 +269,9 @@
{
if (Locked)
{
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
MmLockPage(MmGetPfnForProcess(NULL, Address));
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
return(STATUS_SUCCESS);
}
@@ -362,7 +365,9 @@
MmLockAddressSpace(AddressSpace);
if (Locked)
{
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
MmLockPage(MmGetPfnForProcess(NULL, Address));
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
KeSetEvent(&PageOp->CompletionEvent, IO_NO_INCREMENT, FALSE);
MmReleasePageOp(PageOp);
@@ -437,7 +442,9 @@
*/
if (Locked)
{
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
MmLockPage(Page);
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
PageOp->Status = STATUS_SUCCESS;
KeSetEvent(&PageOp->CompletionEvent, IO_NO_INCREMENT, FALSE);
Modified: trunk/reactos/ntoskrnl/mm/balance.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/balance.c?rev=43240&r1=43239&r2=43240&view=diff
==============================================================================
--- trunk/reactos/ntoskrnl/mm/balance.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/balance.c [iso-8859-1] Wed Sep 30 20:24:00 2009
@@ -105,7 +105,7 @@
{
PMM_ALLOCATION_REQUEST Request;
PLIST_ENTRY Entry;
- KIRQL oldIrql;
+ KIRQL OldIrql;
if (Page == 0)
{
@@ -113,20 +113,22 @@
KeBugCheck(MEMORY_MANAGEMENT);
}
- KeAcquireSpinLock(&AllocationListLock, &oldIrql);
+ KeAcquireSpinLock(&AllocationListLock, &OldIrql);
if (MmGetReferenceCountPage(Page) == 1)
{
(void)InterlockedDecrementUL(&MiMemoryConsumers[Consumer].PagesUsed);
if (IsListEmpty(&AllocationListHead) || MmStats.NrFreePages < MiMinimumAvailablePages)
{
- KeReleaseSpinLock(&AllocationListLock, oldIrql);
+ KeReleaseSpinLock(&AllocationListLock, OldIrql);
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
MmDereferencePage(Page);
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
else
{
Entry = RemoveHeadList(&AllocationListHead);
Request = CONTAINING_RECORD(Entry, MM_ALLOCATION_REQUEST, ListEntry);
- KeReleaseSpinLock(&AllocationListLock, oldIrql);
+ KeReleaseSpinLock(&AllocationListLock, OldIrql);
if(Consumer == MC_USER) MmRemoveLRUUserPage(Page);
MiZeroPage(Page);
Request->Page = Page;
@@ -135,9 +137,11 @@
}
else
{
- KeReleaseSpinLock(&AllocationListLock, oldIrql);
+ KeReleaseSpinLock(&AllocationListLock, OldIrql);
if(Consumer == MC_USER) MmRemoveLRUUserPage(Page);
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
MmDereferencePage(Page);
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
return(STATUS_SUCCESS);
@@ -235,7 +239,7 @@
{
ULONG OldUsed;
PFN_TYPE Page;
- KIRQL oldIrql;
+ KIRQL OldIrql;
/*
* Make sure we don't exceed our individual target.
@@ -257,7 +261,9 @@
*/
if ((Consumer == MC_NPPOOL) || (Consumer == MC_SYSTEM) || MiIsBalancerThread())
{
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
Page = MmAllocPage(Consumer, 0);
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
if (Page == 0)
{
KeBugCheck(NO_PAGES_AVAILABLE);
@@ -290,14 +296,14 @@
KeInitializeEvent(&Request.Event, NotificationEvent, FALSE);
(void)InterlockedIncrementUL(&MiPagesRequired);
- KeAcquireSpinLock(&AllocationListLock, &oldIrql);
+ KeAcquireSpinLock(&AllocationListLock, &OldIrql);
if (MiBalancerThreadHandle != NULL)
{
KeSetEvent(&MiBalancerEvent, IO_NO_INCREMENT, FALSE);
}
InsertTailList(&AllocationListHead, &Request.ListEntry);
- KeReleaseSpinLock(&AllocationListLock, oldIrql);
+ KeReleaseSpinLock(&AllocationListLock, OldIrql);
KeWaitForSingleObject(&Request.Event,
0,
@@ -321,7 +327,9 @@
/*
* Actually allocate the page.
*/
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
Page = MmAllocPage(Consumer, 0);
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
if (Page == 0)
{
KeBugCheck(NO_PAGES_AVAILABLE);
Modified: trunk/reactos/ntoskrnl/mm/freelist.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/freelist.c?rev=43240&r1=43239&r2=43240&view=diff
==============================================================================
--- trunk/reactos/ntoskrnl/mm/freelist.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/freelist.c [iso-8859-1] Wed Sep 30 20:24:00 2009
@@ -830,19 +830,16 @@
VOID
NTAPI
-MmReferencePageUnsafe(PFN_TYPE Pfn)
-{
- KIRQL oldIrql;
+MmReferencePage(PFN_TYPE Pfn)
+{
PPHYSICAL_PAGE Page;
- DPRINT("MmReferencePageUnsafe(PysicalAddress %x)\n", Pfn << PAGE_SHIFT);
+ DPRINT("MmReferencePage(PysicalAddress %x)\n", Pfn << PAGE_SHIFT);
if (Pfn == 0 || Pfn > MmHighestPhysicalPage)
{
return;
}
-
- oldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
Page = MiGetPfnEntry(Pfn);
ASSERT(Page);
@@ -853,16 +850,6 @@
}
Page->ReferenceCount++;
- KeReleaseQueuedSpinLock(LockQueuePfnLock, oldIrql);
-}
-
-VOID
-NTAPI
-MmReferencePage(PFN_TYPE Pfn)
-{
- DPRINT("MmReferencePage(PysicalAddress %x)\n", Pfn << PAGE_SHIFT);
-
- MmReferencePageUnsafe(Pfn);
}
ULONG
@@ -904,13 +891,10 @@
NTAPI
MmDereferencePage(PFN_TYPE Pfn)
{
- KIRQL oldIrql;
PPHYSICAL_PAGE Page;
DPRINT("MmDereferencePage(PhysicalAddress %x)\n", Pfn << PAGE_SHIFT);
- oldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
-
Page = MiGetPfnEntry(Pfn);
ASSERT(Page);
@@ -962,7 +946,6 @@
KeSetEvent(&ZeroPageThreadEvent, IO_NO_INCREMENT, FALSE);
}
}
- KeReleaseQueuedSpinLock(LockQueuePfnLock, oldIrql);
}
ULONG
@@ -993,14 +976,11 @@
VOID
NTAPI
-MmLockPageUnsafe(PFN_TYPE Pfn)
-{
- KIRQL oldIrql;
+MmLockPage(PFN_TYPE Pfn)
+{
PPHYSICAL_PAGE Page;
- DPRINT("MmLockPageUnsafe(PhysicalAddress %x)\n", Pfn << PAGE_SHIFT);
-
- oldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
+ DPRINT("MmLockPage(PhysicalAddress %x)\n", Pfn << PAGE_SHIFT);
Page = MiGetPfnEntry(Pfn);
ASSERT(Page);
@@ -1011,28 +991,15 @@
}
Page->LockCount++;
- KeReleaseQueuedSpinLock(LockQueuePfnLock, oldIrql);
}
VOID
NTAPI
-MmLockPage(PFN_TYPE Pfn)
-{
- DPRINT("MmLockPage(PhysicalAddress %x)\n", Pfn << PAGE_SHIFT);
-
- MmLockPageUnsafe(Pfn);
-}
-
-VOID
-NTAPI
MmUnlockPage(PFN_TYPE Pfn)
{
- KIRQL oldIrql;
PPHYSICAL_PAGE Page;
DPRINT("MmUnlockPage(PhysicalAddress %x)\n", Pfn << PAGE_SHIFT);
-
- oldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
Page = MiGetPfnEntry(Pfn);
ASSERT(Page);
@@ -1043,7 +1010,6 @@
}
Page->LockCount--;
- KeReleaseQueuedSpinLock(LockQueuePfnLock, oldIrql);
}
PFN_TYPE
@@ -1053,12 +1019,10 @@
PFN_TYPE PfnOffset;
PLIST_ENTRY ListEntry;
PPHYSICAL_PAGE PageDescriptor;
- KIRQL oldIrql;
BOOLEAN NeedClear = FALSE;
DPRINT("MmAllocPage()\n");
- oldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
if (IsListEmpty(&FreeZeroedPageListHead))
{
if (IsListEmpty(&FreeUnzeroedPageListHead))
@@ -1070,7 +1034,6 @@
}
DPRINT1("MmAllocPage(): Out of memory\n");
- KeReleaseQueuedSpinLock(LockQueuePfnLock, oldIrql);
return 0;
}
ListEntry = RemoveTailList(&FreeUnzeroedPageListHead);
@@ -1105,8 +1068,6 @@
MmStats.NrSystemPages++;
MmStats.NrFreePages--;
-
- KeReleaseQueuedSpinLock(LockQueuePfnLock, oldIrql);
PfnOffset = PageDescriptor - MmPfnDatabase;
if ((NeedClear) && (Consumer != MC_SYSTEM))
Modified: trunk/reactos/ntoskrnl/mm/mmfault.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/mmfault.c?rev=43240&r1=43239&r2=43240&view=diff
==============================================================================
--- trunk/reactos/ntoskrnl/mm/mmfault.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/mmfault.c [iso-8859-1] Wed Sep 30 20:24:00 2009
@@ -288,6 +288,8 @@
{
NTSTATUS Status;
PFN_TYPE AllocatedPage;
+ KIRQL OldIrql;
+
Status = MmRequestPageMemoryConsumer(MC_PPOOL, FALSE, &AllocatedPage);
if (!NT_SUCCESS(Status))
{
@@ -303,7 +305,9 @@
1);
if (Locked)
{
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
MmLockPage(AllocatedPage);
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
return(Status);
}
Modified: trunk/reactos/ntoskrnl/mm/section.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/section.c?rev=43240&r1=43239&r2=43240&view=diff
==============================================================================
--- trunk/reactos/ntoskrnl/mm/section.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/section.c [iso-8859-1] Wed Sep 30 20:24:00 2009
@@ -771,6 +771,7 @@
PMM_REGION Region;
BOOLEAN HasSwapEntry;
PEPROCESS Process = MmGetAddressSpaceOwner(AddressSpace);
+ KIRQL OldIrql;
/*
* There is a window between taking the page fault and locking the
@@ -781,7 +782,9 @@
{
if (Locked)
{
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
MmLockPage(MmGetPfnForProcess(Process, Address));
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
return(STATUS_SUCCESS);
}
@@ -908,7 +911,9 @@
}
if (Locked)
{
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
MmLockPage(Page);
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
MmUnlockSectionSegment(Segment);
PageOp->Status = STATUS_SUCCESS;
@@ -978,7 +983,9 @@
*/
if (Locked)
{
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
MmLockPage(Page);
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
PageOp->Status = STATUS_SUCCESS;
MmspCompleteAndReleasePageOp(PageOp);
@@ -1013,7 +1020,9 @@
*/
if (Locked)
{
- MmLockPageUnsafe(Page);
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
+ MmLockPage(Page);
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
/*
@@ -1056,7 +1065,9 @@
MmInsertRmap(Page, Process, (PVOID)PAddress);
if (Locked)
{
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
MmLockPage(Page);
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
/*
@@ -1156,7 +1167,9 @@
if (Locked)
{
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
MmLockPage(Page);
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
PageOp->Status = STATUS_SUCCESS;
MmspCompleteAndReleasePageOp(PageOp);
@@ -1230,7 +1243,9 @@
MmInsertRmap(Page, Process, (PVOID)PAddress);
if (Locked)
{
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
MmLockPage(Page);
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
PageOp->Status = STATUS_SUCCESS;
MmspCompleteAndReleasePageOp(PageOp);
@@ -1262,7 +1277,9 @@
MmInsertRmap(Page, Process, (PVOID)PAddress);
if (Locked)
{
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
MmLockPage(Page);
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
PageOp->Status = STATUS_SUCCESS;
MmspCompleteAndReleasePageOp(PageOp);
@@ -1289,6 +1306,7 @@
PMM_REGION Region;
ULONG Entry;
PEPROCESS Process = MmGetAddressSpaceOwner(AddressSpace);
+ KIRQL OldIrql;
DPRINT("MmAccessFaultSectionView(%x, %x, %x, %x)\n", AddressSpace, MemoryArea, Address, Locked);
@@ -1429,8 +1447,10 @@
}
if (Locked)
{
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
MmLockPage(NewPage);
MmUnlockPage(OldPage);
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
/*
@@ -1511,6 +1531,7 @@
BOOLEAN DirectMapped;
BOOLEAN IsImageSection;
PEPROCESS Process = MmGetAddressSpaceOwner(AddressSpace);
+ KIRQL OldIrql;
Address = (PVOID)PAGE_ROUND_DOWN(Address);
@@ -1599,7 +1620,9 @@
}
else
{
+ OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
MmReferencePage(Page);
+ KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
MmDeleteAllRmaps(Page, (PVOID)&Context, MmPageOutDeleteMapping);
More information about the Ros-diffs
mailing list