Hi David, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [cannot apply to v5.3-rc3 next-20190809] [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/David-Sterba/Compression-level-API-cleanups/20190811-193645 config: x86_64-randconfig-h002-201932 (attached as .config) compiler: gcc-7 (Debian 7.4.0-10) 7.4.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): ld: fs/btrfs/compression.o: in function `btrfs_compress_pages': >> fs/btrfs/compression.c:1042: undefined reference to `btrfs_compress_set_level' ld: fs/btrfs/compression.o: in function `btrfs_compress_str2level': fs/btrfs/compression.c:1614: undefined reference to `btrfs_compress_set_level' vim +1042 fs/btrfs/compression.c 1007 1008 /* 1009 * Given an address space and start and length, compress the bytes into @pages 1010 * that are allocated on demand. 1011 * 1012 * @type_level is encoded algorithm and level, where level 0 means whatever 1013 * default the algorithm chooses and is opaque here; 1014 * - compression algo are 0-3 1015 * - the level are bits 4-7 1016 * 1017 * @out_pages is an in/out parameter, holds maximum number of pages to allocate 1018 * and returns number of actually allocated pages 1019 * 1020 * @total_in is used to return the number of bytes actually read. It 1021 * may be smaller than the input length if we had to exit early because we 1022 * ran out of room in the pages array or because we cross the 1023 * max_out threshold. 1024 * 1025 * @total_out is an in/out parameter, must be set to the input length and will 1026 * be also used to return the total number of compressed bytes 1027 * 1028 * @max_out tells us the max number of bytes that we're allowed to 1029 * stuff into pages 1030 */ 1031 int btrfs_compress_pages(unsigned int type_level, struct address_space *mapping, 1032 u64 start, struct page **pages, 1033 unsigned long *out_pages, 1034 unsigned long *total_in, 1035 unsigned long *total_out) 1036 { 1037 int type = btrfs_compress_type(type_level); 1038 int level = btrfs_compress_level(type_level); 1039 struct list_head *workspace; 1040 int ret; 1041 > 1042 level = btrfs_compress_set_level(type, level); 1043 workspace = get_workspace(type, level); 1044 ret = btrfs_compress_op[type]->compress_pages(workspace, mapping, 1045 start, pages, 1046 out_pages, 1047 total_in, total_out); 1048 put_workspace(type, workspace); 1049 return ret; 1050 } 1051 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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