update for HEAD-2003021201

[reactos.git] / ntoskrnl / mm / pageop.c

diff --git a/ntoskrnl/mm/pageop.c b/ntoskrnl/mm/pageop.c
index 6c7a46f..7c4b15e 100644 (file)
--- a/ntoskrnl/mm/pageop.c
+++ b/ntoskrnl/mm/pageop.c
@@ -22,8 +22,9 @@
 
 #define PAGEOP_HASH_TABLE_SIZE       (32)
 
-KSPIN_LOCK MmPageOpHashTableLock;
-PMM_PAGEOP MmPageOpHashTable[PAGEOP_HASH_TABLE_SIZE] = {NULL, } ;
+static KSPIN_LOCK MmPageOpHashTableLock;
+static PMM_PAGEOP MmPageOpHashTable[PAGEOP_HASH_TABLE_SIZE];
+static NPAGED_LOOKASIDE_LIST MmPageOpLookasideList;
 
 #define TAG_MM_PAGEOP   TAG('M', 'P', 'O', 'P')
 
@@ -51,7 +52,7 @@ MmReleasePageOp(PMM_PAGEOP PageOp)
     {
       MmPageOpHashTable[PageOp->Hash] = PageOp->Next;
       KeReleaseSpinLock(&MmPageOpHashTableLock, oldIrql);
-      ExFreePool(PageOp);
+      ExFreeToNPagedLookasideList(&MmPageOpLookasideList, PageOp);
       return;
     }
   while (PrevPageOp->Next != NULL)
@@ -60,7 +61,7 @@ MmReleasePageOp(PMM_PAGEOP PageOp)
        {
          PrevPageOp->Next = PageOp->Next;
          KeReleaseSpinLock(&MmPageOpHashTableLock, oldIrql);
-         ExFreePool(PageOp);
+          ExFreeToNPagedLookasideList(&MmPageOpLookasideList, PageOp);
          return;
        }
       PrevPageOp = PrevPageOp->Next;
@@ -198,8 +199,7 @@ MmGetPageOp(PMEMORY_AREA MArea, ULONG Pid, PVOID Address,
   /*
    * Otherwise add a new pageop.
    */
-  PageOp = ExAllocatePoolWithTag(NonPagedPool, sizeof(MM_PAGEOP), 
-                                TAG_MM_PAGEOP);
+  PageOp = ExAllocateFromNPagedLookasideList(&MmPageOpLookasideList);
   if (PageOp == NULL)
     {
       KeReleaseSpinLock(&MmPageOpHashTableLock, oldIrql);
@@ -232,6 +232,20 @@ MmGetPageOp(PMEMORY_AREA MArea, ULONG Pid, PVOID Address,
   return(PageOp);
 }
 
+VOID
+MmInitializePageOp(VOID)
+{
+  memset(MmPageOpHashTable, 0, sizeof(MmPageOpHashTable));
+  KeInitializeSpinLock(&MmPageOpHashTableLock);
+
+  ExInitializeNPagedLookasideList (&MmPageOpLookasideList,
+                                  NULL,
+                                  NULL,
+                                  0,
+                                  sizeof(MM_PAGEOP),
+                                  TAG_MM_PAGEOP,
+                                  50);
+}