Hi Matthew, kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-everything] [also build test ERROR on linus/master next-20231108] [cannot apply to v6.6] [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/Matthew-Wilcox-Oracle/buffer-Return-bool-from-grow_dev_folio/20231108-035905 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20231107194152.3374087-3-willy%40infradead.org patch subject: [PATCH 2/5] buffer: Calculate block number inside folio_init_buffers() config: i386-randconfig-141-20231108 (https://download.01.org/0day-ci/archive/20231109/202311090123.FRvXagQt-lkp@xxxxxxxxx/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231109/202311090123.FRvXagQt-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/202311090123.FRvXagQt-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): ld: fs/buffer.o: in function `folio_init_buffers': >> fs/buffer.c:1003: undefined reference to `__divdi3' vim +1003 fs/buffer.c 993 994 /* 995 * Initialise the state of a blockdev folio's buffers. 996 */ 997 static sector_t folio_init_buffers(struct folio *folio, 998 struct block_device *bdev, int size) 999 { 1000 struct buffer_head *head = folio_buffers(folio); 1001 struct buffer_head *bh = head; 1002 bool uptodate = folio_test_uptodate(folio); > 1003 sector_t block = folio_pos(folio) / size; 1004 sector_t end_block = blkdev_max_block(bdev, size); 1005 1006 do { 1007 if (!buffer_mapped(bh)) { 1008 bh->b_end_io = NULL; 1009 bh->b_private = NULL; 1010 bh->b_bdev = bdev; 1011 bh->b_blocknr = block; 1012 if (uptodate) 1013 set_buffer_uptodate(bh); 1014 if (block < end_block) 1015 set_buffer_mapped(bh); 1016 } 1017 block++; 1018 bh = bh->b_this_page; 1019 } while (bh != head); 1020 1021 /* 1022 * Caller needs to validate requested block against end of device. 1023 */ 1024 return end_block; 1025 } 1026 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
