Fix compilation on previous RH9 kernel revisions

Author: cardigliano

kernel/pf_ring.c

@@ -5848,7 +5848,7 @@ static int do_memory_mmap(struct vm_area_struct *vma, unsigned long start_off, u
   unsigned long start;
 
   /* we do not want to have this area swapped out, lock it */
-#if(LINUX_VERSION_CODE < KERNEL_VERSION(6,3,0) && !(defined(REDHAT_PATCHED_KERNEL) && RHEL_MAJOR >= 9))
+#if(LINUX_VERSION_CODE < KERNEL_VERSION(6,3,0) && !(defined(REDHAT_PATCHED_KERNEL) && RHEL_MAJOR >= 9 && !defined(VM_LOCKED_MASK)))
   vma->vm_flags |= flags;
 #else
   vm_flags_set(vma, flags);