[sir_richard] 45576: [NTOS]: Get rid of page locking mechanism for MDL since I can't see a reason this would make sense, since these pages won't be scheduled for page out anyway, and that is the only code that looked at this value.
11 Feb
2010
11 Feb
'10
6:41 p.m.
Author: sir_richard
Date: Thu Feb 11 19:41:45 2010
New Revision: 45576
URL: http://svn.reactos.org/svn/reactos?rev=45576&view=rev
Log:
[NTOS]: Get rid of page locking mechanism for MDL since I can't see a reason this
would make sense, since these pages won't be scheduled for page out anyway, and that
is the only code that looked at this value.
Modified:
trunk/reactos/ntoskrnl/mm/ARM3/mdlsup.c
trunk/reactos/ntoskrnl/mm/anonmem.c
trunk/reactos/ntoskrnl/mm/mmfault.c
trunk/reactos/ntoskrnl/mm/rmap.c
trunk/reactos/ntoskrnl/mm/section.c
Modified: trunk/reactos/ntoskrnl/mm/ARM3/mdlsup.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/ARM3/mdlsup.c?…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/ARM3/mdlsup.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/ARM3/mdlsup.c [iso-8859-1] Thu Feb 11 19:41:45 2010
@@ -966,7 +966,6 @@
// Now lock the page
//
MmReferencePage(PageFrameIndex);
- MmLockPage(PageFrameIndex);
}
else
{
@@ -1124,7 +1123,6 @@
//
// Unlock and dereference
//
- MmUnlockPage(*MdlPages);
MmDereferencePage(*MdlPages);
}
} while (++MdlPages < LastPage);
@@ -1218,7 +1216,6 @@
//
// Unlock and dereference
//
- MmUnlockPage(*MdlPages);
MmDereferencePage(*MdlPages);
} while (++MdlPages < LastPage);
Modified: trunk/reactos/ntoskrnl/mm/anonmem.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/anonmem.c?rev=…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/anonmem.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/anonmem.c [iso-8859-1] Thu Feb 11 19:41:45 2010
@@ -258,7 +258,6 @@
PMM_REGION Region;
PMM_PAGEOP PageOp;
PEPROCESS Process = MmGetAddressSpaceOwner(AddressSpace);
- KIRQL OldIrql;
/*
* There is a window between taking the page fault and locking the
@@ -267,12 +266,6 @@
*/
if (MmIsPagePresent(NULL, Address))
{
- if (Locked)
- {
- OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
- MmLockPage(MmGetPfnForProcess(NULL, Address));
- KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
- }
return(STATUS_SUCCESS);
}
@@ -363,12 +356,6 @@
return(Status);
}
MmLockAddressSpace(AddressSpace);
- if (Locked)
- {
- OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
- MmLockPage(MmGetPfnForProcess(NULL, Address));
- KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
- }
KeSetEvent(&PageOp->CompletionEvent, IO_NO_INCREMENT, FALSE);
MmReleasePageOp(PageOp);
return(STATUS_SUCCESS);
@@ -440,12 +427,6 @@
/*
* Finish the operation
*/
- if (Locked)
- {
- OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
- MmLockPage(Page);
- KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
- }
PageOp->Status = STATUS_SUCCESS;
KeSetEvent(&PageOp->CompletionEvent, IO_NO_INCREMENT, FALSE);
MmReleasePageOp(PageOp);
Modified: trunk/reactos/ntoskrnl/mm/mmfault.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/mmfault.c?rev=…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/mmfault.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/mmfault.c [iso-8859-1] Thu Feb 11 19:41:45 2010
@@ -305,7 +305,6 @@
{
NTSTATUS Status;
PFN_TYPE AllocatedPage;
- KIRQL OldIrql;
Status = MmRequestPageMemoryConsumer(MC_PPOOL, FALSE, &AllocatedPage);
if (!NT_SUCCESS(Status))
@@ -320,11 +319,5 @@
PAGE_READWRITE,
&AllocatedPage,
1);
- if (Locked)
- {
- OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
- MmLockPage(AllocatedPage);
- KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
- }
return(Status);
}
Modified: trunk/reactos/ntoskrnl/mm/rmap.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/rmap.c?rev=455…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/rmap.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/rmap.c [iso-8859-1] Thu Feb 11 19:41:45 2010
@@ -202,7 +202,7 @@
ExAcquireFastMutex(&RmapListLock);
entry = MmGetRmapListHeadPage(Page);
- if (entry == NULL || MmGetLockCountPage(Page) != 0)
+ if (entry == NULL)
{
ExReleaseFastMutex(&RmapListLock);
return(STATUS_UNSUCCESSFUL);
Modified: trunk/reactos/ntoskrnl/mm/section.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/section.c?rev=…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/section.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/section.c [iso-8859-1] Thu Feb 11 19:41:45 2010
@@ -792,7 +792,6 @@
PMM_REGION Region;
BOOLEAN HasSwapEntry;
PEPROCESS Process = MmGetAddressSpaceOwner(AddressSpace);
- KIRQL OldIrql;
/*
* There is a window between taking the page fault and locking the
@@ -801,12 +800,6 @@
*/
if (MmIsPagePresent(Process, Address))
{
- if (Locked)
- {
- OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
- MmLockPage(MmGetPfnForProcess(Process, Address));
- KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
- }
return(STATUS_SUCCESS);
}
@@ -930,12 +923,6 @@
}
MmInsertRmap(Page, Process, (PVOID)PAddress);
}
- if (Locked)
- {
- OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
- MmLockPage(Page);
- KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
- }
MmUnlockSectionSegment(Segment);
PageOp->Status = STATUS_SUCCESS;
MmspCompleteAndReleasePageOp(PageOp);
@@ -1002,12 +989,6 @@
/*
* Finish the operation
*/
- if (Locked)
- {
- OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
- MmLockPage(Page);
- KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
- }
PageOp->Status = STATUS_SUCCESS;
MmspCompleteAndReleasePageOp(PageOp);
DPRINT("Address 0x%.8X\n", Address);
@@ -1035,16 +1016,6 @@
KeBugCheck(MEMORY_MANAGEMENT);
return(Status);
}
- /*
- * Don't add an rmap entry since the page mapped could be for
- * anything.
- */
- if (Locked)
- {
- OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
- MmLockPage(Page);
- KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
- }
/*
* Cleanup and release locks
@@ -1084,12 +1055,6 @@
return(Status);
}
MmInsertRmap(Page, Process, (PVOID)PAddress);
- if (Locked)
- {
- OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
- MmLockPage(Page);
- KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
- }
/*
* Cleanup and release locks
@@ -1186,12 +1151,6 @@
}
MmInsertRmap(Page, Process, (PVOID)PAddress);
- if (Locked)
- {
- OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
- MmLockPage(Page);
- KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
- }
PageOp->Status = STATUS_SUCCESS;
MmspCompleteAndReleasePageOp(PageOp);
DPRINT("Address 0x%.8X\n", Address);
@@ -1262,12 +1221,6 @@
KeBugCheck(MEMORY_MANAGEMENT);
}
MmInsertRmap(Page, Process, (PVOID)PAddress);
- if (Locked)
- {
- OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
- MmLockPage(Page);
- KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
- }
PageOp->Status = STATUS_SUCCESS;
MmspCompleteAndReleasePageOp(PageOp);
DPRINT("Address 0x%.8X\n", Address);
@@ -1296,12 +1249,6 @@
KeBugCheck(MEMORY_MANAGEMENT);
}
MmInsertRmap(Page, Process, (PVOID)PAddress);
- if (Locked)
- {
- OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
- MmLockPage(Page);
- KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
- }
PageOp->Status = STATUS_SUCCESS;
MmspCompleteAndReleasePageOp(PageOp);
DPRINT("Address 0x%.8X\n", Address);
@@ -1327,7 +1274,6 @@
PMM_REGION Region;
ULONG Entry;
PEPROCESS Process = MmGetAddressSpaceOwner(AddressSpace);
- KIRQL OldIrql;
DPRINT("MmAccessFaultSectionView(%x, %x, %x, %x)\n", AddressSpace,
MemoryArea, Address, Locked);
@@ -1465,13 +1411,6 @@
{
DPRINT1("Unable to create virtual mapping\n");
KeBugCheck(MEMORY_MANAGEMENT);
- }
- if (Locked)
- {
- OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
- MmLockPage(NewPage);
- MmUnlockPage(OldPage);
- KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
}
/*
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