Hi "Matthew, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on block/for-next] [cannot apply to balbi-usb/testing/next cifs/for-next miklos-vfs/overlayfs-next linus/master v5.8-rc4 next-20200708] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Matthew-Wilcox-Oracle/Remove-kiocb-ki_complete/20200709-062758 base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next config: s390-randconfig-r013-20200708 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 02946de3802d3bc65bc9f2eb9b8d4969b5a7add8) 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 # install s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from arch/s390/purgatory/purgatory.c:10: In file included from include/linux/kexec.h:18: In file included from include/linux/crash_core.h:6: In file included from include/linux/elfcore.h:9: In file included from arch/s390/include/asm/elf.h:132: In file included from include/linux/compat.h:17: >> include/linux/fs.h:353:41: warning: shifting a negative signed value is undefined [-Wshift-negative-value] kiocb->ki_flags = (kiocb->ki_flags & (~IOCB_COMPLETION_FNS)) | ^~~~~~~~~~~~~~~~~~~ include/linux/fs.h:325:33: note: expanded from macro 'IOCB_COMPLETION_FNS' #define IOCB_COMPLETION_FNS (~0 << _IOCB_COMPLETION_SHIFT) ~~ ^ 1 warning generated. vim +353 include/linux/fs.h 350 351 static inline void kiocb_set_completion(struct kiocb *kiocb, int id) 352 { > 353 kiocb->ki_flags = (kiocb->ki_flags & (~IOCB_COMPLETION_FNS)) | 354 (id << _IOCB_COMPLETION_SHIFT); 355 } 356 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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