Hi Benjamin, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v4.16-rc6] [cannot apply to next-20180322] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Benjamin-Warnke/add-compression-algorithm-zBeWalgo/20180323-155925 reproduce: # apt-get install sparse make ARCH=x86_64 allmodconfig make C=1 CF=-D__CHECK_ENDIAN__ sparse warnings: (new ones prefixed by >>) >> lib/zbewalgo/zbewalgo.c:70:12: sparse: symbol 'zbewalgo_stat_combination' was not declared. Should it be static? >> lib/zbewalgo/zbewalgo.c:71:12: sparse: symbol 'zbewalgo_stat_count' was not declared. Should it be static? >> lib/zbewalgo/zbewalgo.c:79:9: sparse: symbol 'zbewalgo_combinations' was not declared. Should it be static? >> lib/zbewalgo/zbewalgo.c:80:4: sparse: symbol 'zbewalgo_combinations_count' was not declared. Should it be static? >> lib/zbewalgo/zbewalgo.c:92:5: sparse: symbol 'zbewalgo_early_abort_size' was not declared. Should it be static? >> lib/zbewalgo/zbewalgo.c:97:36: sparse: symbol 'zbewalgo_main_data_ptr' was not declared. Should it be static? >> lib/zbewalgo/zbewalgo.c:103:9: sparse: symbol 'zbewalgo_base_algorithms' was not declared. Should it be static? >> lib/zbewalgo/zbewalgo.c:104:4: sparse: symbol 'zbewalgo_base_algorithms_count' was not declared. Should it be static? -- >> lib/zbewalgo/JBE2.c:46:44: sparse: constant 0xF0F0F0F00F0F0F0F is so big it is unsigned long >> lib/zbewalgo/JBE2.c:47:42: sparse: constant 0x0F0F0F0F00000000 is so big it is long lib/zbewalgo/JBE2.c:127:40: sparse: constant 0xF0F0F0F00F0F0F0F is so big it is unsigned long lib/zbewalgo/JBE2.c:128:40: sparse: constant 0x0F0F0F0F00000000 is so big it is long lib/zbewalgo/JBE2.c:184:40: sparse: constant 0xF0F0F0F00F0F0F0F is so big it is unsigned long lib/zbewalgo/JBE2.c:185:40: sparse: constant 0x0F0F0F0F00000000 is so big it is long Please review and possibly fold the followup patch. --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation