Hi Imran, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on a70bf4a85b43cb952bd39dd948b103b1b3eb2cf8] url: https://github.com/0day-ci/linux/commits/Imran-Khan/kernfs-use-hashed-mut... base: a70bf4a85b43cb952bd39dd948b103b1b3eb2cf8 config: x86_64-randconfig-a011 (https://download.01.org/0day-ci/archive/20220113/202201132349.uRCekZ3g-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/ee30c7abbab86fd9d653c0aefb8655500... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Imran-Khan/kernfs-use-hashed-mutex-and-spinlock-in-place-of-global-ones/20220113-184429 git checkout ee30c7abbab86fd9d653c0aefb8655500dc517d4 # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash fs/kernfs/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): 390 | void __init kernfs_lock_init(void) | ^~~~~~~~~~~~~~~~ vim +/kernfs_lock_init +390 fs/kernfs/mount.c 389 391 { 392 int count; 393 394 for (count = 0; count < NR_KERNFS_LOCKS; count++) { 395 spin_lock_init(&kernfs_global_locks.open_node_locks[count].lock); 396 mutex_init(&kernfs_global_locks.open_file_mutex[count].lock); 397 } 398 } 399 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org