Hi Olga, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on trondmy-nfs/linux-next] [also build test WARNING on v5.18 next-20220531] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/intel-lab-lkp/linux/commits/Olga-Kornievskaia/pNFS-fix-IO-thread-starvation-problem-during-LAYOUTUNAVAILABLE-error/20220531-215040 base: git://git.linux-nfs.org/projects/trondmy/linux-nfs.git linux-next config: arm-defconfig (https://download.01.org/0day-ci/archive/20220601/202206010206.kDKlof2o-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-gcc (GCC) 11.3.0 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/7f80a6c53d6cdb806706a8748cb79348f9906229 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Olga-Kornievskaia/pNFS-fix-IO-thread-starvation-problem-during-LAYOUTUNAVAILABLE-error/20220531-215040 git checkout 7f80a6c53d6cdb806706a8748cb79348f9906229 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash fs/nfs/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from include/linux/bitops.h:33, from include/linux/kernel.h:22, from include/linux/uio.h:8, from include/linux/socket.h:8, from include/uapi/linux/in.h:24, from include/linux/in.h:19, from include/linux/nfs_fs.h:22, from fs/nfs/pnfs.c:30: fs/nfs/pnfs.c: In function 'pnfs_update_layout': >> arch/arm/include/asm/bitops.h:183:41: warning: this statement may fall through [-Wimplicit-fallthrough=] 183 | #define ATOMIC_BITOP(name,nr,p) _##name(nr,p) | ^~~~~~~~~~~~~ arch/arm/include/asm/bitops.h:189:41: note: in expansion of macro 'ATOMIC_BITOP' 189 | #define set_bit(nr,p) ATOMIC_BITOP(set_bit,nr,p) | ^~~~~~~~~~~~ fs/nfs/pnfs.c:2164:25: note: in expansion of macro 'set_bit' 2164 | set_bit(NFS_LAYOUT_DRAIN, &lo->plh_flags); | ^~~~~~~ fs/nfs/pnfs.c:2165:17: note: here 2165 | default: | ^~~~~~~ vim +183 arch/arm/include/asm/bitops.h ^1da177e4c3f41 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 175 e7ec02938dbe8c include/asm-arm/bitops.h Russell King 2005-07-28 176 #ifndef CONFIG_SMP ^1da177e4c3f41 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 177 /* ^1da177e4c3f41 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 178 * The __* form of bitops are non-atomic and may be reordered. ^1da177e4c3f41 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 179 */ 6323f0ccedf756 arch/arm/include/asm/bitops.h Russell King 2011-01-16 180 #define ATOMIC_BITOP(name,nr,p) \ 6323f0ccedf756 arch/arm/include/asm/bitops.h Russell King 2011-01-16 181 (__builtin_constant_p(nr) ? ____atomic_##name(nr, p) : _##name(nr,p)) e7ec02938dbe8c include/asm-arm/bitops.h Russell King 2005-07-28 182 #else 6323f0ccedf756 arch/arm/include/asm/bitops.h Russell King 2011-01-16 @183 #define ATOMIC_BITOP(name,nr,p) _##name(nr,p) e7ec02938dbe8c include/asm-arm/bitops.h Russell King 2005-07-28 184 #endif ^1da177e4c3f41 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 185 -- 0-DAY CI Kernel Test Service https://01.org/lkp