Hi "Matthew, Thank you for the patch! Yet something to improve: [auto build test ERROR on hnaz-linux-mm/master] url: https://github.com/0day-ci/linux/commits/Matthew-Wilcox-Oracle/mm-Move-page_mapping_file-to-pagemap-h/20210316-221138 base: https://github.com/hnaz/linux-mm master config: mips-randconfig-r032-20210316 (attached as .config) compiler: mips-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/5f7b112de945843f38fbf9f602dd547010e8b8d0 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Matthew-Wilcox-Oracle/mm-Move-page_mapping_file-to-pagemap-h/20210316-221138 git checkout 5f7b112de945843f38fbf9f602dd547010e8b8d0 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All error/warnings (new ones prefixed by >>): arch/mips/mm/cache.c: In function '__flush_dcache_page': >> arch/mips/mm/cache.c:85:34: error: implicit declaration of function 'page_mapping_file'; did you mean 'page_mapping'? [-Werror=implicit-function-declaration] 85 | struct address_space *mapping = page_mapping_file(page); | ^~~~~~~~~~~~~~~~~ | page_mapping >> arch/mips/mm/cache.c:85:34: warning: initialization of 'struct address_space *' from 'int' makes pointer from integer without a cast [-Wint-conversion] arch/mips/mm/cache.c: At top level: arch/mips/mm/cache.c:129:6: warning: no previous prototype for '__update_cache' [-Wmissing-prototypes] 129 | void __update_cache(unsigned long address, pte_t pte) | ^~~~~~~~~~~~~~ arch/mips/mm/cache.c:236:12: warning: no previous prototype for '__uncached_access' [-Wmissing-prototypes] 236 | int __weak __uncached_access(struct file *file, unsigned long addr) | ^~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +85 arch/mips/mm/cache.c ^1da177e4c3f41 Linus Torvalds 2005-04-16 82 ^1da177e4c3f41 Linus Torvalds 2005-04-16 83 void __flush_dcache_page(struct page *page) ^1da177e4c3f41 Linus Torvalds 2005-04-16 84 { cb9f753a3731f7 Huang Ying 2018-04-05 @85 struct address_space *mapping = page_mapping_file(page); ^1da177e4c3f41 Linus Torvalds 2005-04-16 86 unsigned long addr; ^1da177e4c3f41 Linus Torvalds 2005-04-16 87 ^1da177e4c3f41 Linus Torvalds 2005-04-16 88 if (mapping && !mapping_mapped(mapping)) { ^1da177e4c3f41 Linus Torvalds 2005-04-16 89 SetPageDcacheDirty(page); ^1da177e4c3f41 Linus Torvalds 2005-04-16 90 return; ^1da177e4c3f41 Linus Torvalds 2005-04-16 91 } ^1da177e4c3f41 Linus Torvalds 2005-04-16 92 ^1da177e4c3f41 Linus Torvalds 2005-04-16 93 /* ^1da177e4c3f41 Linus Torvalds 2005-04-16 94 * We could delay the flush for the !page_mapping case too. But that ^1da177e4c3f41 Linus Torvalds 2005-04-16 95 * case is for exec env/arg pages and those are %99 certainly going to ^1da177e4c3f41 Linus Torvalds 2005-04-16 96 * get faulted into the tlb (and thus flushed) anyways. ^1da177e4c3f41 Linus Torvalds 2005-04-16 97 */ 234859e49a1532 Paul Burton 2016-03-01 98 if (PageHighMem(page)) 234859e49a1532 Paul Burton 2016-03-01 99 addr = (unsigned long)kmap_atomic(page); 234859e49a1532 Paul Burton 2016-03-01 100 else ^1da177e4c3f41 Linus Torvalds 2005-04-16 101 addr = (unsigned long)page_address(page); 234859e49a1532 Paul Burton 2016-03-01 102 ^1da177e4c3f41 Linus Torvalds 2005-04-16 103 flush_data_cache_page(addr); 234859e49a1532 Paul Burton 2016-03-01 104 234859e49a1532 Paul Burton 2016-03-01 105 if (PageHighMem(page)) abca2500c0c1b2 Ira Weiny 2020-06-04 106 kunmap_atomic((void *)addr); ^1da177e4c3f41 Linus Torvalds 2005-04-16 107 } ^1da177e4c3f41 Linus Torvalds 2005-04-16 108 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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