Hi Jieun, Thank you for the patch! Yet something to improve: [auto build test ERROR on dm/for-next] [also build test ERROR on v5.4 next-20191129] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Jieun-Kim/drivers-md-dm-log-c-Remove-unused-variable-sz/20191201-134548 base: https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git for-next config: i386-defconfig (attached as .config) compiler: gcc-7 (Debian 7.5.0-1) 7.5.0 reproduce: # save the attached .config to linux build tree make ARCH=i386 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All error/warnings (new ones prefixed by >>): In file included from include/linux/dm-dirty-log.h:16:0, from drivers/md/dm-log.c:13: drivers/md/dm-log.c: In function 'core_status': >> include/linux/device-mapper.h:551:22: error: 'sz' undeclared (first use in this function); did you mean 's8'? #define DMEMIT(x...) sz += ((sz >= maxlen) ? \ ^ >> drivers/md/dm-log.c:788:3: note: in expansion of macro 'DMEMIT' DMEMIT("1 %s", log->type->name); ^~~~~~ include/linux/device-mapper.h:551:22: note: each undeclared identifier is reported only once for each function it appears in #define DMEMIT(x...) sz += ((sz >= maxlen) ? \ ^ >> drivers/md/dm-log.c:788:3: note: in expansion of macro 'DMEMIT' DMEMIT("1 %s", log->type->name); ^~~~~~ -- In file included from include/linux/dm-dirty-log.h:16:0, from drivers//md/dm-log.c:13: drivers//md/dm-log.c: In function 'core_status': >> include/linux/device-mapper.h:551:22: error: 'sz' undeclared (first use in this function); did you mean 's8'? #define DMEMIT(x...) sz += ((sz >= maxlen) ? \ ^ drivers//md/dm-log.c:788:3: note: in expansion of macro 'DMEMIT' DMEMIT("1 %s", log->type->name); ^~~~~~ include/linux/device-mapper.h:551:22: note: each undeclared identifier is reported only once for each function it appears in #define DMEMIT(x...) sz += ((sz >= maxlen) ? \ ^ drivers//md/dm-log.c:788:3: note: in expansion of macro 'DMEMIT' DMEMIT("1 %s", log->type->name); ^~~~~~ vim +/DMEMIT +788 drivers/md/dm-log.c ^1da177e4c3f41 Linus Torvalds 2005-04-16 776 ^1da177e4c3f41 Linus Torvalds 2005-04-16 777 #define DMEMIT_SYNC \ ^1da177e4c3f41 Linus Torvalds 2005-04-16 778 if (lc->sync != DEFAULTSYNC) \ ^1da177e4c3f41 Linus Torvalds 2005-04-16 779 DMEMIT("%ssync ", lc->sync == NOSYNC ? "no" : "") ^1da177e4c3f41 Linus Torvalds 2005-04-16 780 416cd17b198221 Heinz Mauelshagen 2008-04-24 781 static int core_status(struct dm_dirty_log *log, status_type_t status, ^1da177e4c3f41 Linus Torvalds 2005-04-16 782 char *result, unsigned int maxlen) ^1da177e4c3f41 Linus Torvalds 2005-04-16 783 { ^1da177e4c3f41 Linus Torvalds 2005-04-16 784 struct log_c *lc = log->context; ^1da177e4c3f41 Linus Torvalds 2005-04-16 785 ^1da177e4c3f41 Linus Torvalds 2005-04-16 786 switch(status) { ^1da177e4c3f41 Linus Torvalds 2005-04-16 787 case STATUSTYPE_INFO: 315dcc226f066c Jonathan E Brassow 2007-05-09 @788 DMEMIT("1 %s", log->type->name); ^1da177e4c3f41 Linus Torvalds 2005-04-16 789 break; ^1da177e4c3f41 Linus Torvalds 2005-04-16 790 ^1da177e4c3f41 Linus Torvalds 2005-04-16 791 case STATUSTYPE_TABLE: ^1da177e4c3f41 Linus Torvalds 2005-04-16 792 DMEMIT("%s %u %u ", log->type->name, ^1da177e4c3f41 Linus Torvalds 2005-04-16 793 lc->sync == DEFAULTSYNC ? 1 : 2, lc->region_size); ^1da177e4c3f41 Linus Torvalds 2005-04-16 794 DMEMIT_SYNC; ^1da177e4c3f41 Linus Torvalds 2005-04-16 795 } ^1da177e4c3f41 Linus Torvalds 2005-04-16 796 2a79ee10b97355 Jieun Kim 2019-12-01 797 return 0; ^1da177e4c3f41 Linus Torvalds 2005-04-16 798 } ^1da177e4c3f41 Linus Torvalds 2005-04-16 799 :::::: The code at line 788 was first introduced by commit :::::: 315dcc226f066c1d3cef79283dcde807fe0e32d1 dm log: report fault status :::::: TO: Jonathan E Brassow <jbrassow@xxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx Intel Corporation
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