[kbuild-all] Re: [PATCH] dm snapshot: remove unneeded variable

Hi, Thank you for the patch! Yet something to improve: [auto build test ERROR on device-mapper-dm/for-next] [also build test ERROR on v5.15 next-20211111] [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/cgel-zte-gmail-com/dm-snapshot-r... base: https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git for-next config: ia64-defconfig (attached as .config) compiler: ia64-linux-gcc (GCC) 11.2.0 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 # https://github.com/0day-ci/linux/commit/f69a0e783035cffc39b44a355d0e0470d... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review cgel-zte-gmail-com/dm-snapshot-remove-unneeded-variable/20211111-155800 git checkout f69a0e783035cffc39b44a355d0e0470d5d63a0b # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=ia64 SHELL=/bin/bash drivers/md/ 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 >>): In file included from drivers/md/dm-exception-store.h:15, from drivers/md/dm-snap-transient.c:8: drivers/md/dm-snap-transient.c: In function 'transient_status': 602 | #define DMEMIT(x...) sz += ((sz >= maxlen) ? \ | ^~ drivers/md/dm-snap-transient.c:96:17: note: in expansion of macro 'DMEMIT' 96 | DMEMIT(" N %llu", (unsigned long long)store->chunk_size); | ^~~~~~ include/linux/device-mapper.h:602:22: note: each undeclared identifier is reported only once for each function it appears in 602 | #define DMEMIT(x...) sz += ((sz >= maxlen) ? \ | ^~ drivers/md/dm-snap-transient.c:96:17: note: in expansion of macro 'DMEMIT' 96 | DMEMIT(" N %llu", (unsigned long long)store->chunk_size); | ^~~~~~ vim +602 include/linux/device-mapper.h 0da336e5fab75c Alasdair G Kergon 2008-04-24 601 0da336e5fab75c Alasdair G Kergon 2008-04-24 @602 #define DMEMIT(x...) sz += ((sz >= maxlen) ? \ 0da336e5fab75c Alasdair G Kergon 2008-04-24 603 0 : scnprintf(result + sz, maxlen - sz, x)) 0da336e5fab75c Alasdair G Kergon 2008-04-24 604 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org