Re: [PATCH v2 18/19] mm, swap: drop the SWAP_HAS_CACHE flag

[kernel test robot <lkp@intel.com>]

Hi Kairui,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 41218ede767f6b218185af65ce919d0cade75f6b]

url:    https://github.com/intel-lab-lkp/linux/commits/Kairui-Song/mm-swap-rename-__read_swap_cache_async-to-swap_cache_alloc_folio/20251117-021532
base:   41218ede767f6b218185af65ce919d0cade75f6b
patch link:    https://lore.kernel.org/r/20251117-swap-table-p2-v2-18-37730e6ea6d5%40tencent.com
patch subject: [PATCH v2 18/19] mm, swap: drop the SWAP_HAS_CACHE flag
config: riscv-defconfig (https://download.01.org/0day-ci/archive/20251117/202511171912.yMOEajkV-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 0bba1e76581bad04e7d7f09f5115ae5e2989e0d9)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251117/202511171912.yMOEajkV-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/202511171912.yMOEajkV-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> mm/swapfile.c:88:19: warning: unused variable 'Unused_offset' [-Wunused-const-variable]
      88 | static const char Unused_offset[] = "Unused swap offset entry ";
         |                   ^~~~~~~~~~~~~
   1 warning generated.


vim +/Unused_offset +88 mm/swapfile.c

^1da177e4c3f41 Linus Torvalds 2005-04-16  84  
^1da177e4c3f41 Linus Torvalds 2005-04-16  85  static const char Bad_file[] = "Bad swap file entry ";
^1da177e4c3f41 Linus Torvalds 2005-04-16  86  static const char Unused_file[] = "Unused swap file entry ";
^1da177e4c3f41 Linus Torvalds 2005-04-16  87  static const char Bad_offset[] = "Bad swap offset entry ";
^1da177e4c3f41 Linus Torvalds 2005-04-16 @88  static const char Unused_offset[] = "Unused swap offset entry ";
^1da177e4c3f41 Linus Torvalds 2005-04-16  89  

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