[openeuler:openEuler-1.0-LTS 1291/1291] mm/mem_reliable.c:41:22: warning: 'zero' defined but not used

[openeuler:openEuler-1.0-LTS 1291/1291] mm/mem_reliable.c:41:22: warning: 'zero' defined but not used

[kernel test robot]

Hi Chen,

FYI, the error/warning still remains.

tree:   https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS
head:   58ec866c31299a4b0d63a01cb026877c5f85e4d9
commit: 6943b93b464351cbc35aa002e86bac48e08b1c3f [1291/1291] mm: add support for limiting the usage of reliable memory in pagecache
config: arm64-randconfig-003-20241113 (https://download.01.org/0day-ci/archive/20241113/202411130708.2IT5fUX3-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241113/202411130708.2IT5fUX3-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/202411130708.2IT5fUX3-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	

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