Hi Wander, Thank you for the patch! Yet something to improve: [auto build test ERROR on axboe-block/for-next] [also build test ERROR on linux/master linus/master v5.16-rc5] [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] url: https://github.com/0day-ci/linux/commits/Wander-Lairson-Costa/Fix-warning... base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next config: x86_64-rhel-8.3-kselftests (https://download.01.org/0day-ci/archive/20211214/202112141554.2175ujH7-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/e53f7f8c1ce0b19fef6164247fea08d17... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Wander-Lairson-Costa/Fix-warnings-in-blktrace/20211213-204207 git checkout e53f7f8c1ce0b19fef6164247fea08d17d5f771d # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): block/blk-cgroup.c: In function 'blk_cgroup_bio_start': 1915 | cpu = get_cpu_light(); | ^~~~~~~~~~~~~ | em_cpu_get 1932 | put_cpu_light(); | ^~~~~~~~~~~~~ | fput_light cc1: some warnings being treated as errors vim +1915 block/blk-cgroup.c 1908 1909 void blk_cgroup_bio_start(struct bio *bio) 1910 { 1911 int rwd = blk_cgroup_io_type(bio), cpu; 1912 struct blkg_iostat_set *bis; 1913 unsigned long flags; 1914 1916 bis = per_cpu_ptr(bio->bi_blkg->iostat_cpu, cpu); 1917 flags = u64_stats_update_begin_irqsave(&bis->sync); 1918 1919 /* 1920 * If the bio is flagged with BIO_CGROUP_ACCT it means this is a split 1921 * bio and we would have already accounted for the size of the bio. 1922 */ 1923 if (!bio_flagged(bio, BIO_CGROUP_ACCT)) { 1924 bio_set_flag(bio, BIO_CGROUP_ACCT); 1925 bis->cur.bytes[rwd] += bio->bi_iter.bi_size; 1926 } 1927 bis->cur.ios[rwd]++; 1928 1929 u64_stats_update_end_irqrestore(&bis->sync, flags); 1930 if (cgroup_subsys_on_dfl(io_cgrp_subsys)) 1931 cgroup_rstat_updated(bio->bi_blkg->blkcg->css.cgroup, cpu); 1933 } 1934 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org