Re: [PATCH 09/21] block: Add checks to merging of atomic writes

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On Sat, Sep 30, 2023 at 09:40:30PM +0800, kernel test robot wrote:
> Hi John,
> 
> kernel test robot noticed the following build errors:
> 
> [auto build test ERROR on xfs-linux/for-next]
> [also build test ERROR on axboe-block/for-next mkp-scsi/for-next jejb-scsi/for-next linus/master v6.6-rc3 next-20230929]
> [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/John-Garry/block-Add-atomic-write-operations-to-request_queue-limits/20230929-184542
> base:   https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git for-next
> patch link:    https://lore.kernel.org/r/20230929102726.2985188-10-john.g.garry%40oracle.com
> patch subject: [PATCH 09/21] block: Add checks to merging of atomic writes
> config: mips-mtx1_defconfig (https://download.01.org/0day-ci/archive/20230930/202309302100.L6ynQWub-lkp@xxxxxxxxx/config)
> compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230930/202309302100.L6ynQWub-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/202309302100.L6ynQWub-lkp@xxxxxxxxx/
> 
> All errors (new ones prefixed by >>):
> 
> >> ld.lld: error: undefined symbol: __moddi3
>    >>> referenced by blk-merge.c
>    >>>               block/blk-merge.o:(ll_back_merge_fn) in archive vmlinux.a
>    >>> referenced by blk-merge.c
>    >>>               block/blk-merge.o:(ll_back_merge_fn) in archive vmlinux.a
>    >>> referenced by blk-merge.c
>    >>>               block/blk-merge.o:(bio_attempt_front_merge) in archive vmlinux.a
>    >>> referenced 3 more times

This does not appear to be clang specific, I can reproduce it with GCC
12.3.0 and the same configuration target.

Cheers,
Nathan



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