How to change the batch size of pcp in linux kernel?

Question

I increased the pcp->high via echo 8 > /proc/sys/vm/percpu_pagelist_fraction command, but the pcp->batch value still remains at 63.

vm stats threshold: 125
cpu: 383
          count: 103931
          high:  193513
          batch: 63

Is there a way to increase the pcp->batch value? I'm using Linux kernel 5.14.