tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 7059ffd1a85492c66d87331537ee3e4bdf8bf609 commit: c55fa11d134b40dbe1a4a5512a7fe43497cb6d5e [2620/2620] fscache: limit fscache_object_max_active to avoid blocking config: x86_64-buildonly-randconfig-004-20250102 (https://download.01.org/0day-ci/archive/20250102/202501021908.g3jjkIa6-lkp@i...) compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250102/202501021908.g3jjkIa6-lkp@i...)

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@intel.com | Closes: https://lore.kernel.org/oe-kbuild-all/202501021908.g3jjkIa6-lkp@intel.com/

All warnings (new ones prefixed by >>):

In file included from fs/fscache/main.c:16: In file included from fs/fscache/internal.h:27: In file included from include/linux/fscache-cache.h:17: In file included from include/linux/fscache.h:19: In file included from include/linux/pagemap.h:8: In file included from include/linux/mm.h:1587: include/linux/vmstat.h:431:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 431 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~

...

fs/fscache/main.c:51:21: warning: unused variable 'fscache_min_object_max_active' [-Wunused-variable]

51 | static unsigned int fscache_min_object_max_active = FSCACHE_MIN_OBJECT_MAX_ACTIVE; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

...

fs/fscache/main.c:52:21: warning: unused variable 'fscache_min_op_max_active' [-Wunused-variable]

52 | static unsigned int fscache_min_op_max_active = FSCACHE_MIN_OBJECT_MAX_ACTIVE / 2; | ^~~~~~~~~~~~~~~~~~~~~~~~~ 3 warnings generated.

vim +/fscache_min_object_max_active +51 fs/fscache/main.c

46 47 /* these values serve as lower bounds, will be adjusted in fscache_init() */ 48 #define FSCACHE_MIN_OBJECT_MAX_ACTIVE 4 49 static unsigned int fscache_object_max_active = FSCACHE_MIN_OBJECT_MAX_ACTIVE; 50 static unsigned int fscache_op_max_active = FSCACHE_MIN_OBJECT_MAX_ACTIVE / 2;

51 static unsigned int fscache_min_object_max_active = FSCACHE_MIN_OBJECT_MAX_ACTIVE; 52 static unsigned int fscache_min_op_max_active = FSCACHE_MIN_OBJECT_MAX_ACTIVE / 2;

53