Re: [PATCHv6 6/8] blk-mq-dma: add support for mapping integrity metadata

[kernel test robot <lkp@intel.com>]

Hi Keith,

kernel test robot noticed the following build warnings:

[auto build test WARNING on axboe-block/for-next]
[also build test WARNING on linus/master v6.17-rc1 next-20250812]
[cannot apply to linux-nvme/for-next]
[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/Keith-Busch/blk-mq-dma-create-blk_map_iter-type/20250812-222130
base:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next
patch link:    https://lore.kernel.org/r/20250812135210.4172178-7-kbusch%40meta.com
patch subject: [PATCHv6 6/8] blk-mq-dma: add support for mapping integrity metadata
config: csky-randconfig-001-20250813 (https://download.01.org/0day-ci/archive/20250813/202508131303.nL4SARD7-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 14.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250813/202508131303.nL4SARD7-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/202508131303.nL4SARD7-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> block/blk-mq-dma.c:10:13: warning: '__blk_map_iter_next' defined but not used [-Wunused-function]
      10 | static bool __blk_map_iter_next(struct blk_map_iter *iter)
         |             ^~~~~~~~~~~~~~~~~~~


vim +/__blk_map_iter_next +10 block/blk-mq-dma.c

     9	
  > 10	static bool __blk_map_iter_next(struct blk_map_iter *iter)
    11	{
    12		if (iter->iter.bi_size)
    13			return true;
    14		if (!iter->bio || !iter->bio->bi_next)
    15			return false;
    16	
    17		iter->bio = iter->bio->bi_next;
    18		if (iter->is_integrity) {
    19			iter->iter = bio_integrity(iter->bio)->bip_iter;
    20			iter->bvecs = bio_integrity(iter->bio)->bip_vec;
    21		} else {
    22			iter->iter = iter->bio->bi_iter;
    23			iter->bvecs = iter->bio->bi_io_vec;
    24		}
    25		return true;
    26	}
    27	

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