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: i386-randconfig-a003 (https://download.01.org/0day-ci/archive/20230419/202304192001.KzxpDQmK-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 reproduce (this is a W=1 build): # 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 make W=1 O=build_dir ARCH=i386 olddefconfig make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202304192001.KzxpDQmK-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> block/blk-mq.c:1461:6: warning: no previous prototype for 'blk_flush_queue_insert' [-Wmissing-prototypes] 1461 | void blk_flush_queue_insert(struct request *rq) | ^~~~~~~~~~~~~~~~~~~~~~ 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