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SubjectRe: [PATCH] mm/vmscan: add sysctl knobs for protecting the specified
Hi Alexey,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linux/master]
[also build test ERROR on linus/master v5.12-rc6 next-20210401]
[cannot apply to hnaz-linux-mm/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url: https://github.com/0day-ci/linux/commits/Alexey-Avramov/mm-vmscan-add-sysctl-knobs-for-protecting-the-specified/20210406-061034
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 5e46d1b78a03d52306f21f77a4e4a144b6d31486
config: parisc-randconfig-m031-20210405 (attached as .config)
compiler: hppa-linux-gcc (GCC) 9.3.0
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/0day-ci/linux/commit/a5eeb8d197a8e10c333422e9cc0f2c7d976a3426
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Alexey-Avramov/mm-vmscan-add-sysctl-knobs-for-protecting-the-specified/20210406-061034
git checkout a5eeb8d197a8e10c333422e9cc0f2c7d976a3426
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=parisc

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All error/warnings (new ones prefixed by >>):

>> mm/vmscan.c:180:5: warning: "CONFIG_CLEAN_LOW_KBYTES" is not defined, evaluates to 0 [-Wundef]
180 | #if CONFIG_CLEAN_LOW_KBYTES < 0
| ^~~~~~~~~~~~~~~~~~~~~~~
>> mm/vmscan.c:184:5: warning: "CONFIG_CLEAN_MIN_KBYTES" is not defined, evaluates to 0 [-Wundef]
184 | #if CONFIG_CLEAN_MIN_KBYTES < 0
| ^~~~~~~~~~~~~~~~~~~~~~~
>> mm/vmscan.c:188:55: error: 'CONFIG_CLEAN_LOW_KBYTES' undeclared here (not in a function)
188 | unsigned long sysctl_clean_low_kbytes __read_mostly = CONFIG_CLEAN_LOW_KBYTES;
| ^~~~~~~~~~~~~~~~~~~~~~~
>> mm/vmscan.c:189:55: error: 'CONFIG_CLEAN_MIN_KBYTES' undeclared here (not in a function)
189 | unsigned long sysctl_clean_min_kbytes __read_mostly = CONFIG_CLEAN_MIN_KBYTES;
| ^~~~~~~~~~~~~~~~~~~~~~~


vim +/CONFIG_CLEAN_LOW_KBYTES +188 mm/vmscan.c

179
> 180 #if CONFIG_CLEAN_LOW_KBYTES < 0
181 #error "CONFIG_CLEAN_LOW_KBYTES must be >= 0"
182 #endif
183
> 184 #if CONFIG_CLEAN_MIN_KBYTES < 0
185 #error "CONFIG_CLEAN_MIN_KBYTES must be >= 0"
186 #endif
187
> 188 unsigned long sysctl_clean_low_kbytes __read_mostly = CONFIG_CLEAN_LOW_KBYTES;
> 189 unsigned long sysctl_clean_min_kbytes __read_mostly = CONFIG_CLEAN_MIN_KBYTES;
190

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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