[openeuler:openEuler-1.0-LTS 19033/21616] mm/mem_reliable.c:41:22: warning: 'zero' defined but not used

[openeuler:openEuler-1.0-LTS 19033/21616] mm/mem_reliable.c:41:22: warning: 'zero' defined but not used

[kernel test robot]

tree:   https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS
head:   3a28772f4b29bdda924e9a5d2e3ff1ff1b23fd14
commit: 6943b93b464351cbc35aa002e86bac48e08b1c3f [19033/21616] mm: add support for limiting the usage of reliable memory in pagecache
config: arm64-randconfig-003-20240205 (https://download.01.org/0day-ci/archive/20240206/202402060953.Dyai9myI-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240206/202402060953.Dyai9myI-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202402060953.Dyai9myI-lkp@intel.com/

All warnings (new ones prefixed by >>):

   mm/mem_reliable.c:42:22: warning: 'reliable_pagecache_max_bytes' defined but not used [-Wunused-variable]
      42 | static unsigned long reliable_pagecache_max_bytes = ULONG_MAX;
         |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> mm/mem_reliable.c:41:22: warning: 'zero' defined but not used [-Wunused-variable]
      41 | static unsigned long zero;
         |                      ^~~~


vim +/zero +41 mm/mem_reliable.c

    40	
  > 41	static unsigned long zero;
    42	static unsigned long reliable_pagecache_max_bytes = ULONG_MAX;
    43	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki