On 2023/12/8 23:17, kernel test robot wrote: > Hi Chengming, > > kernel test robot noticed the following build warnings: > > [auto build test WARNING on 0f5f12ac05f36f117e793656c3f560625e927f1b] > > url: https://github.com/intel-lab-lkp/linux/commits/Chengming-Zhou/mm-zswap-make-sure-each-swapfile-always-have-zswap-rb-tree/20231206-174717 > base: 0f5f12ac05f36f117e793656c3f560625e927f1b > patch link: https://lore.kernel.org/r/20231206-zswap-lock-optimize-v1-1-e25b059f9c3a%40bytedance.com > patch subject: [PATCH 1/7] mm/zswap: make sure each swapfile always have zswap rb-tree > config: i386-buildonly-randconfig-002-20231208 (https://download.01.org/0day-ci/archive/20231208/202312082309.xvC0Rdd9-lkp@xxxxxxxxx/config) > compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07) > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231208/202312082309.xvC0Rdd9-lkp@xxxxxxxxx/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot <lkp@xxxxxxxxx> > | Closes: https://lore.kernel.org/oe-kbuild-all/202312082309.xvC0Rdd9-lkp@xxxxxxxxx/ > > All warnings (new ones prefixed by >>): > > In file included from arch/x86/kernel/asm-offsets.c:9: > In file included from include/linux/crypto.h:17: > In file included from include/linux/slab.h:16: > In file included from include/linux/gfp.h:7: > In file included from include/linux/mmzone.h:25: >>> include/linux/zswap.h:53:43: warning: non-void function does not return a value [-Wreturn-type] > static inline int zswap_swapon(int type) {} Ah, will fix to return 0 when !CONFIG_ZSWAP here. Thanks!