Re: [PATCH 7/7] blk-mq: don't use the requeue list to queue flush commands

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

Hi Christoph,

kernel test robot noticed the following build warnings:

[auto build test WARNING on axboe-block/for-next]
[also build test WARNING on next-20230418]
[cannot apply to linus/master v6.3-rc7]
[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/Christoph-Hellwig/blk-mq-reflow-blk_insert_flush/20230417-051014
base:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next
patch link:    https://lore.kernel.org/r/20230416200930.29542-8-hch%40lst.de
patch subject: [PATCH 7/7] blk-mq: don't use the requeue list to queue flush commands
config: x86_64-randconfig-a013-20230417 (https://download.01.org/0day-ci/archive/20230420/202304200122.GEFsqxFh-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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/intel-lab-lkp/linux/commit/c1197e1a4ff5b38b73d3ec923987ca857f5e2695
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Christoph-Hellwig/blk-mq-reflow-blk_insert_flush/20230417-051014
        git checkout c1197e1a4ff5b38b73d3ec923987ca857f5e2695
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304200122.GEFsqxFh-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> block/blk-mq.c:1461:6: warning: no previous prototype for function 'blk_flush_queue_insert' [-Wmissing-prototypes]
   void blk_flush_queue_insert(struct request *rq)
        ^
   block/blk-mq.c:1461:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void blk_flush_queue_insert(struct request *rq)
   ^
   static 
   1 warning generated.


vim +/blk_flush_queue_insert +1461 block/blk-mq.c

  1460	
> 1461	void blk_flush_queue_insert(struct request *rq)
  1462	{
  1463		struct request_queue *q = rq->q;
  1464		unsigned long flags;
  1465	
  1466		spin_lock_irqsave(&q->requeue_lock, flags);
  1467		list_add_tail(&rq->queuelist, &q->flush_list);
  1468		spin_unlock_irqrestore(&q->requeue_lock, flags);
  1469	}
  1470	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests