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Subject[xiang:erofs/advancedpcl 16/16] fs/erofs/zdata.c:901:36: error: 'mappednr' undeclared
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/xiang/linux.git erofs/advancedpcl
head: 2c199ac6fc3c0d5499babde5b7586d99e4bc7aae
commit: 2c199ac6fc3c0d5499babde5b7586d99e4bc7aae [16/16] erofs: introduce multi-reference pclusters
config: sh-allmodconfig (https://download.01.org/0day-ci/archive/20220711/202207112048.J46LPGXw-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 11.3.0
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://git.kernel.org/pub/scm/linux/kernel/git/xiang/linux.git/commit/?id=2c199ac6fc3c0d5499babde5b7586d99e4bc7aae
git remote add xiang https://git.kernel.org/pub/scm/linux/kernel/git/xiang/linux.git
git fetch --no-tags xiang erofs/advancedpcl
git checkout 2c199ac6fc3c0d5499babde5b7586d99e4bc7aae
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=sh SHELL=/bin/bash fs/erofs/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

fs/erofs/zdata.c: In function 'z_erofs_fill_duplicated_copy':
>> fs/erofs/zdata.c:901:36: error: 'mappednr' undeclared (first use in this function)
901 | if (src && mappednr != pgnr) {
| ^~~~~~~~
fs/erofs/zdata.c:901:36: note: each undeclared identifier is reported only once for each function it appears in


vim +/mappednr +901 fs/erofs/zdata.c

877
878 static void z_erofs_fill_duplicated_copy(struct z_erofs_decompress_backend *be)
879 {
880 unsigned char *src = NULL;
881 struct list_head *p, *n;
882
883 list_for_each_safe(p, n, &be->decompressed_secondary_bvecs) {
884 struct z_erofs_bvec_item *bvi;
885 unsigned int end, cur = 0;
886 int off0;
887 void *dst;
888
889 bvi = container_of(p, struct z_erofs_bvec_item, list);
890 dst = kmap_local_page(bvi->bvec.page);
891
892 if (bvi->bvec.offset < 0)
893 cur = -bvi->bvec.offset;
894 off0 = bvi->bvec.offset + (bvi->bvec.offset & ~PAGE_MASK);
895 end = min_t(unsigned int, be->pcl->length - off0, PAGE_SIZE);
896 off0 -= be->pcl->pageofs_out;
897 while (cur < end) {
898 unsigned int pgnr, scur;
899
900 pgnr = (off0 + cur + PAGE_SIZE - 1) >> PAGE_SHIFT;
> 901 if (src && mappednr != pgnr) {
902 kunmap_local(src);
903 src = NULL;
904 }
905 scur = (pgnr << PAGE_SHIFT) - (off0 + cur);
906
907 if (!src)
908 src = kmap_local_page(
909 be->decompressed_pages[pgnr]);
910 memcpy(dst + cur, src + scur, end - max(cur, scur));
911 }
912 kunmap_local(dst);
913 z_erofs_onlinepage_endio(bvi->bvec.page);
914 }
915
916 if (src)
917 kunmap_local(src);
918 }
919

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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