[NTOSKRNL]

- Only unmap pages if they were mapped
- Make sure the page reference counts are sane when freeing the cache memory area

svn path=/trunk/; revision=54690

reactos/ntoskrnl/cc/copy.c

@@ -645,7 +645,10 @@ CcZeroData (IN PFILE_OBJECT     FileObject,
              KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
              Status = Iosb.Status;
 	  }
+        if (Mdl->MdlFlags & MDL_MAPPED_TO_SYSTEM_VA)
+        {
           MmUnmapLockedPages(Mdl->MappedSystemVa, Mdl);
+        }
 	  if (!NT_SUCCESS(Status))
 	    {
 	      return(FALSE);

reactos/ntoskrnl/cc/view.c

@@ -899,6 +899,7 @@ CcFreeCachePage(PVOID Context, MEMORY_AREA* MemoryArea, PVOID Address,
   ASSERT(SwapEntry == 0);
   if (Page != 0)
     {
+        ASSERT(MmGetReferenceCountPage(Page) == 1);
       MmReleasePageMemoryConsumer(MC_CACHE, Page);
     }
 }