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charset=us-ascii Content-Disposition: inline In-Reply-To: <20260903040131.4016290-1-zhangbo56@xiaomi.com> Hi Bo, [This is a private test report for your RFC patch.] kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/Bo-Zhang/mm-vmscan-avoid-anon-scanning-for-GFP_NOIO-with-low-swapcache/20260903-120131 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20260903040131.4016290-1-zhangbo56%40xiaomi.com patch subject: [RFC PATCH] mm: vmscan: avoid anon scanning for GFP_NOIO with low swapcache config: arc-allnoconfig (https://download.01.org/0day-ci/archive/20260906/202609060948.O3LniW01-lkp@intel.com/config) compiler: arc-linux-gcc (GCC) 16.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260906/202609060948.O3LniW01-lkp@intel.com/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 | Closes: https://lore.kernel.org/oe-kbuild-all/202609060948.O3LniW01-lkp@intel.com/ All errors (new ones prefixed by >>): mm/vmscan.c: In function 'reclaimable_anon_is_low': >> mm/vmscan.c:396:47: error: 'NR_SWAPCACHE' undeclared (first use in this function) 396 | swapcache = lruvec_page_state(lruvec, NR_SWAPCACHE); | ^~~~~~~~~~~~ mm/vmscan.c:396:47: note: each undeclared identifier is reported only once for each function it appears in vim +/NR_SWAPCACHE +396 mm/vmscan.c 384 385 static inline bool reclaimable_anon_is_low(struct mem_cgroup *memcg, 386 int nid, struct scan_control *sc) 387 { 388 struct lruvec *lruvec = get_lruvec(memcg, nid); 389 unsigned long anon_pages, swapcache; 390 391 if (!sc || (sc->gfp_mask & __GFP_IO)) 392 return false; 393 394 anon_pages = lruvec_page_state(lruvec, NR_INACTIVE_ANON) + 395 lruvec_page_state(lruvec, NR_ACTIVE_ANON); > 396 swapcache = lruvec_page_state(lruvec, NR_SWAPCACHE); 397 398 return swapcache < min(anon_pages >> 6, SWAP_CLUSTER_MAX); 399 } 400 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki