Hi Peter, Thank you for the patch! Yet something to improve: [auto build test ERROR on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/Peter-Xu/mm-Remember-young-bit-for-migration-entries/20220803-092311 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything config: openrisc-randconfig-r016-20220803 (https://download.01.org/0day-ci/archive/20220803/202208032031.PVcMB0Hr-lkp@xxxxxxxxx/config) compiler: or1k-linux-gcc (GCC) 12.1.0 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/intel-lab-lkp/linux/commit/2fca6cb25745d1404fc34e0ec2ea89b6195a8c27 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Peter-Xu/mm-Remember-young-bit-for-migration-entries/20220803-092311 git checkout 2fca6cb25745d1404fc34e0ec2ea89b6195a8c27 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=openrisc SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): or1k-linux-ld: mm/rmap.o: in function `migration_entry_supports_young': >> include/linux/swapops.h:288: undefined reference to `max_swapfile_size' include/linux/swapops.h:288:(.text+0x31a0): relocation truncated to fit: R_OR1K_INSN_REL_26 against undefined symbol `max_swapfile_size' or1k-linux-ld: mm/migrate.o: in function `migration_entry_supports_young': >> include/linux/swapops.h:288: undefined reference to `max_swapfile_size' include/linux/swapops.h:288:(.text+0x158): relocation truncated to fit: R_OR1K_INSN_REL_26 against undefined symbol `max_swapfile_size' vim +288 include/linux/swapops.h 279 280 static inline bool migration_entry_supports_young(void) 281 { 282 /* 283 * max_swapfile_size() returns the max supported swp-offset plus 1. 284 * We can support the migration young bit only if the pfn swap 285 * entry has the offset larger than storing the PFN value, then it 286 * means there's extra bit(s) where we can store the young bit. 287 */ > 288 return max_swapfile_size() > SWP_MIG_YOUNG_BIT; 289 } 290 -- 0-DAY CI Kernel Test Service https://01.org/lkp
