Hi Ming, kernel test robot noticed the following build warnings: [auto build test WARNING on axboe-block/for-next] [also build test WARNING on linus/master v6.14-rc5 next-20250307] [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/Ming-Lei/loop-remove-rw-parameter-from-lo_rw_aio/20250309-002548 base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next patch link: https://lore.kernel.org/r/20250308162312.1640828-4-ming.lei%40redhat.com patch subject: [RESEND PATCH 3/5] loop: add helper loop_queue_work_prep config: arc-randconfig-001-20250309 (https://download.01.org/0day-ci/archive/20250309/202503091413.vbFFy32o-lkp@xxxxxxxxx/config) compiler: arceb-elf-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250309/202503091413.vbFFy32o-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/202503091413.vbFFy32o-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): drivers/block/loop.c: In function 'loop_queue_work_prep': >> drivers/block/loop.c:862:25: warning: unused variable 'rq' [-Wunused-variable] 862 | struct request *rq = blk_mq_rq_from_pdu(cmd); | ^~ vim +/rq +862 drivers/block/loop.c 859 860 static void loop_queue_work_prep(struct loop_cmd *cmd) 861 { > 862 struct request *rq = blk_mq_rq_from_pdu(cmd); 863 864 /* always use the first bio's css */ 865 cmd->blkcg_css = NULL; 866 cmd->memcg_css = NULL; 867 #ifdef CONFIG_BLK_CGROUP 868 if (rq->bio) { 869 cmd->blkcg_css = bio_blkcg_css(rq->bio); 870 #ifdef CONFIG_MEMCG 871 if (cmd->blkcg_css) { 872 cmd->memcg_css = 873 cgroup_get_e_css(cmd->blkcg_css->cgroup, 874 &memory_cgrp_subsys); 875 } 876 #endif 877 } 878 #endif 879 } 880 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
