* Re: [PATCH 2/5] buffer: Calculate block number inside folio_init_buffers()
[not found] <20231107194152.3374087-3-willy@infradead.org>
@ 2023-11-08 17:30 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2023-11-08 17:30 UTC (permalink / raw)
To: Matthew Wilcox (Oracle), Andrew Morton
Cc: oe-kbuild-all, Linux Memory Management List,
Matthew Wilcox (Oracle), Hannes Reinecke, Luis Chamberlain,
Pankaj Raghav, linux-fsdevel
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@intel.com/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@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/202311090123.FRvXagQt-lkp@intel.com/
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
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