Hi Patrick, kernel test robot noticed the following build warnings: [auto build test WARNING on a6ad54137af92535cfe32e19e5f3bc1bb7dbd383] url: https://github.com/intel-lab-lkp/linux/commits/Roy-Patrick/filemap-Pass-address_space-mapping-to-free_folio/20250828-174202 base: a6ad54137af92535cfe32e19e5f3bc1bb7dbd383 patch link: https://lore.kernel.org/r/20250828093902.2719-4-roypat%40amazon.co.uk patch subject: [PATCH v5 03/12] mm: introduce AS_NO_DIRECT_MAP config: loongarch-randconfig-r133-20250831 (https://download.01.org/0day-ci/archive/20250831/202508311805.yfcdeaFC-lkp@xxxxxxxxx/config) compiler: loongarch64-linux-gcc (GCC) 14.3.0 reproduce: (https://download.01.org/0day-ci/archive/20250831/202508311805.yfcdeaFC-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202508311805.yfcdeaFC-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> mm/secretmem.c:155:39: sparse: sparse: symbol 'secretmem_aops' was not declared. Should it be static? vim +/secretmem_aops +155 mm/secretmem.c 1507f51255c9ff Mike Rapoport 2021-07-07 154 1507f51255c9ff Mike Rapoport 2021-07-07 @155 const struct address_space_operations secretmem_aops = { 46de8b979492e1 Matthew Wilcox (Oracle 2022-02-09 156) .dirty_folio = noop_dirty_folio, 6612ed24a24273 Matthew Wilcox (Oracle 2022-05-02 157) .free_folio = secretmem_free_folio, 5409548df3876a Matthew Wilcox (Oracle 2022-06-06 158) .migrate_folio = secretmem_migrate_folio, 1507f51255c9ff Mike Rapoport 2021-07-07 159 }; 1507f51255c9ff Mike Rapoport 2021-07-07 160 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki