Hi Wupeng,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on next-20220818]

url:    https://github.com/intel-lab-lkp/linux/commits/Wupeng-Ma/watermark-related-improvement-on-zone-movable/20220818-170659
base:    5b6a4bf680d61b1dd26629840f848d0df8983c62
config: s390-randconfig-r011-20220818 (https://download.01.org/0day-ci/archive/20220818/202208181955.CIEgocmg-lkp@intel.com/config)
compiler: s390-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/d126658752d146244ef366f63b8edbb797dc5436
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Wupeng-Ma/watermark-related-improvement-on-zone-movable/20220818-170659
        git checkout d126658752d146244ef366f63b8edbb797dc5436
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <redacted>

All errors (new ones prefixed by >>):

   s390-linux-ld: mm/page_alloc.o: in function `watermark_scale_factor_sysctl_handler':
   page_alloc.c:(.text+0xbaa2): undefined reference to `sysctl_vals'

quoted

s390-linux-ld: page_alloc.c:(.text+0xbaae): undefined reference to `sysctl_vals'

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp