Index: view.c
===================================================================
--- ntoskrnl/cc/view.c	(revision 75735)
+++ ntoskrnl/cc/view.c	(working copy)
@@ -580,8 +580,10 @@
     ULONG i;
     NTSTATUS Status;
     ULONG_PTR NumberOfPages;
+    ULONG Trimmed = FALSE;;
 
     /* Create a memory area. */
+Retry:
     MmLockAddressSpace(MmGetKernelAddressSpace());
     Status = MmCreateMemoryArea(MmGetKernelAddressSpace(),
                                 0, // nothing checks for VACB mareas, so set to 0
@@ -594,6 +596,16 @@
     MmUnlockAddressSpace(MmGetKernelAddressSpace());
     if (!NT_SUCCESS(Status))
     {
+        if (Status == STATUS_NO_MEMORY && !Trimmed)
+        {
+            CcRosTrimCache(1, 0, &NumberOfPages);
+            Trimmed = TRUE;
+            if (NumberOfPages)
+            {
+                DPRINT1("CcRosMapVacb: trimmed %lx pages, retrying\n", NumberOfPages);
+                goto Retry;
+            }
+        }
         DPRINT1("MmCreateMemoryArea failed with %lx for VACB %p\n", Status, Vacb);
         return Status;
     }