Hi Kairui, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-everything] [also build test WARNING on next-20240103] [cannot apply to linus/master v6.7-rc8] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Kairui-Song/mm-swapfile-c-add-back-some-comment/20240103-015650 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20240102175338.62012-8-ryncsn%40gmail.com patch subject: [PATCH v2 7/9] mm/swap: avoid a duplicated swap cache lookup for SWP_SYNCHRONOUS_IO config: arc-vdk_hs38_smp_defconfig (https://download.01.org/0day-ci/archive/20240103/202401032010.yrIDf885-lkp@xxxxxxxxx/config) compiler: arc-elf-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240103/202401032010.yrIDf885-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/202401032010.yrIDf885-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> mm/swap_state.c:884: warning: Function parameter or member 'shadow' not described in 'swapin_direct' vim +884 mm/swap_state.c d9bfcfdc41e8e5 Huang Ying 2017-09-06 872 b16a5db0ccd159 Kairui Song 2024-01-03 873 /** b16a5db0ccd159 Kairui Song 2024-01-03 874 * swapin_direct - swap in folios skipping swap cache and readahead b16a5db0ccd159 Kairui Song 2024-01-03 875 * @entry: swap entry of this memory b16a5db0ccd159 Kairui Song 2024-01-03 876 * @gfp_mask: memory allocation flags b16a5db0ccd159 Kairui Song 2024-01-03 877 * @vmf: fault information b16a5db0ccd159 Kairui Song 2024-01-03 878 * b16a5db0ccd159 Kairui Song 2024-01-03 879 * Returns the struct folio for entry and addr after the swap entry is read b16a5db0ccd159 Kairui Song 2024-01-03 880 * in. b16a5db0ccd159 Kairui Song 2024-01-03 881 */ 983c0b807f7eda Kairui Song 2024-01-03 882 static struct folio *swapin_direct(swp_entry_t entry, gfp_t gfp_mask, cd81b9fd3de376 Kairui Song 2024-01-03 883 struct vm_fault *vmf, void *shadow) b16a5db0ccd159 Kairui Song 2024-01-03 @884 { b16a5db0ccd159 Kairui Song 2024-01-03 885 struct vm_area_struct *vma = vmf->vma; b16a5db0ccd159 Kairui Song 2024-01-03 886 struct folio *folio; b16a5db0ccd159 Kairui Song 2024-01-03 887 b16a5db0ccd159 Kairui Song 2024-01-03 888 /* skip swapcache */ b16a5db0ccd159 Kairui Song 2024-01-03 889 folio = vma_alloc_folio(GFP_HIGHUSER_MOVABLE, 0, b16a5db0ccd159 Kairui Song 2024-01-03 890 vma, vmf->address, false); b16a5db0ccd159 Kairui Song 2024-01-03 891 if (folio) { 9e22e4254bdb8c Kairui Song 2024-01-03 892 if (mem_cgroup_swapin_charge_folio(folio, NULL, 64ae20cbed3891 Kairui Song 2024-01-03 893 GFP_KERNEL, entry)) { b16a5db0ccd159 Kairui Song 2024-01-03 894 folio_put(folio); b16a5db0ccd159 Kairui Song 2024-01-03 895 return NULL; b16a5db0ccd159 Kairui Song 2024-01-03 896 } 64ae20cbed3891 Kairui Song 2024-01-03 897 64ae20cbed3891 Kairui Song 2024-01-03 898 __folio_set_locked(folio); 64ae20cbed3891 Kairui Song 2024-01-03 899 __folio_set_swapbacked(folio); 64ae20cbed3891 Kairui Song 2024-01-03 900 b16a5db0ccd159 Kairui Song 2024-01-03 901 mem_cgroup_swapin_uncharge_swap(entry); b16a5db0ccd159 Kairui Song 2024-01-03 902 b16a5db0ccd159 Kairui Song 2024-01-03 903 if (shadow) b16a5db0ccd159 Kairui Song 2024-01-03 904 workingset_refault(folio, shadow); b16a5db0ccd159 Kairui Song 2024-01-03 905 b16a5db0ccd159 Kairui Song 2024-01-03 906 folio_add_lru(folio); b16a5db0ccd159 Kairui Song 2024-01-03 907 b16a5db0ccd159 Kairui Song 2024-01-03 908 /* To provide entry to swap_read_folio() */ b16a5db0ccd159 Kairui Song 2024-01-03 909 folio->swap = entry; b16a5db0ccd159 Kairui Song 2024-01-03 910 swap_read_folio(folio, true, NULL); b16a5db0ccd159 Kairui Song 2024-01-03 911 folio->private = NULL; b16a5db0ccd159 Kairui Song 2024-01-03 912 } b16a5db0ccd159 Kairui Song 2024-01-03 913 b16a5db0ccd159 Kairui Song 2024-01-03 914 return folio; b16a5db0ccd159 Kairui Song 2024-01-03 915 } b16a5db0ccd159 Kairui Song 2024-01-03 916 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
