[ros-diffs] [cgutman] 47516: [NTOSKRNL] - Revert the hack in r47514 - The ASSERT is there to make sure the PFN lock is held - Fix the issue properly by holding the PFN lock while initializing

Author: cgutman
Date: Tue Jun  1 22:06:53 2010
New Revision: 47516

URL: http://svn.reactos.org/svn/reactos?rev=47516&view=rev
Log:
[NTOSKRNL]
- Revert the hack in r47514
- The ASSERT is there to make sure the PFN lock is held
- Fix the issue properly by holding the PFN lock while initializing

Modified:
    trunk/reactos/ntoskrnl/mm/ARM3/pfnlist.c
    trunk/reactos/ntoskrnl/mm/freelist.c

Modified: trunk/reactos/ntoskrnl/mm/ARM3/pfnlist.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/ARM3/pfnlist.c…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/ARM3/pfnlist.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/ARM3/pfnlist.c [iso-8859-1] Tue Jun  1 22:06:53 2010
@@ -59,7 +59,7 @@
 {
     PFN_NUMBER OldBlink, EntryIndex = MiGetPfnEntryIndex(Entry);
 
-    ASSERT(KeGetCurrentIrql() <= DISPATCH_LEVEL);
+    ASSERT(KeGetCurrentIrql() == DISPATCH_LEVEL);
     ASSERT_LIST_INVARIANT(ListHead);
 
     /* Get the back link */

Modified: trunk/reactos/ntoskrnl/mm/freelist.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/freelist.c?rev…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/freelist.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/freelist.c [iso-8859-1] Tue Jun  1 22:06:53 2010
@@ -457,11 +457,15 @@
     PMEMORY_ALLOCATION_DESCRIPTOR Md;
     PLIST_ENTRY NextEntry;
     ULONG NrSystemPages = 0;
+    KIRQL OldIrql;
 
     /* This is what a used page looks like */
     RtlZeroMemory(&UsedPage, sizeof(UsedPage));
     UsedPage.u3.e1.PageLocation = ActiveAndValid;
     UsedPage.u3.e2.ReferenceCount = 1;
+
+    /* Lock PFN database */
+    OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
 
     /* Loop the memory descriptors */
     for (NextEntry = KeLoaderBlock->MemoryDescriptorListHead.Flink;
@@ -518,6 +522,9 @@
         MmPfnDatabase[0][i] = UsedPage;
         NrSystemPages++;
     }
+
+    /* Release the PFN database lock */
+    KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
     
     KeInitializeEvent(&ZeroPageThreadEvent, NotificationEvent, TRUE);
     DPRINT("Pages: %x %x\n", MmAvailablePages, NrSystemPages);