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charset=us-ascii Content-Disposition: inline In-Reply-To: <20260514-limit-dentries-cache-v1-1-431b9eb0c530@ddn.com> Hi Horst, kernel test robot noticed the following build errors: [auto build test ERROR on 5d6919055dec134de3c40167a490f33c74c12581] url: https://github.com/intel-lab-lkp/linux/commits/Horst-Birthelmer/dcache-add-fs-dentry-limit-sysctl-with-negative-first-reaper/20260515-154600 base: 5d6919055dec134de3c40167a490f33c74c12581 patch link: https://lore.kernel.org/r/20260514-limit-dentries-cache-v1-1-431b9eb0c530%40ddn.com patch subject: [PATCH] dcache: add fs.dentry-limit sysctl with negative-first reaper config: openrisc-randconfig-r073-20260515 (https://download.01.org/0day-ci/archive/20260515/202605152333.0pOd2zJR-lkp@intel.com/config) compiler: or1k-linux-gcc (GCC) 10.5.0 smatch: v0.5.0-9185-gbcc58b9c reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260515/202605152333.0pOd2zJR-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/202605152333.0pOd2zJR-lkp@intel.com/ All errors (new ones prefixed by >>): fs/dcache.c: In function 'dentry_limit_worker_fn': >> fs/dcache.c:1474:7: error: implicit declaration of function 'get_nr_dentry'; did you mean 'retain_dentry'? [-Werror=implicit-function-declaration] 1474 | nr = get_nr_dentry(); | ^~~~~~~~~~~~~ | retain_dentry cc1: some warnings being treated as errors vim +1474 fs/dcache.c 1463 1464 static void dentry_limit_worker_fn(struct work_struct *work) 1465 { 1466 struct dentry_limit_ctx ctx; 1467 unsigned long limit = READ_ONCE(sysctl_dentry_limit); 1468 unsigned int ms; 1469 long nr; 1470 1471 if (!limit) 1472 return; 1473 > 1474 nr = get_nr_dentry(); 1475 if (nr <= (long)limit) 1476 return; 1477 1478 ctx.over = nr - (long)limit; 1479 1480 /* Phase 1: drain negative dentries across every superblock. */ 1481 ctx.isolate = dentry_lru_isolate_negative; 1482 iterate_supers(dentry_limit_prune_sb, &ctx); 1483 1484 /* Phase 2: still over? Apply the ordinary LRU policy. */ 1485 if (ctx.over > 0) { 1486 ctx.isolate = dentry_lru_isolate; 1487 iterate_supers(dentry_limit_prune_sb, &ctx); 1488 } 1489 1490 /* 1491 * Re-arm while still above the limit. Re-read the sysctls in 1492 * case the admin raised the cap or disabled the feature during 1493 * the walk. 1494 */ 1495 limit = READ_ONCE(sysctl_dentry_limit); 1496 if (!limit || get_nr_dentry() <= (long)limit) 1497 return; 1498 1499 ms = READ_ONCE(sysctl_dentry_limit_interval_ms); 1500 queue_delayed_work(system_unbound_wq, &dentry_limit_work, 1501 msecs_to_jiffies(ms)); 1502 } 1503 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki