Hi Jeffle, Thank you for the patch! Yet something to improve: [auto build test ERROR on trondmy-nfs/linux-next] [also build test ERROR on rostedt-trace/for-next linus/master v5.17-rc8] [cannot apply to xiang-erofs/dev-test dhowells-fs/fscache-next next-20220316] [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/0day-ci/linux/commits/Jeffle-Xu/fscache-erofs-fscache-based-on-demand-read-semantics/20220316-214711 base: git://git.linux-nfs.org/projects/trondmy/linux-nfs.git linux-next config: ia64-randconfig-r033-20220317 (https://download.01.org/0day-ci/archive/20220317/202203170323.idYrKxCZ-lkp@xxxxxxxxx/config) compiler: ia64-linux-gcc (GCC) 11.2.0 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/0day-ci/linux/commit/ef29cbdc09ec1e6ab918eaf5a16fa7ba8d23fb54 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jeffle-Xu/fscache-erofs-fscache-based-on-demand-read-semantics/20220316-214711 git checkout ef29cbdc09ec1e6ab918eaf5a16fa7ba8d23fb54 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=ia64 SHELL=/bin/bash fs/cachefiles/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from arch/ia64/include/asm/pgtable.h:153, from include/linux/pgtable.h:6, from arch/ia64/include/asm/uaccess.h:40, from include/linux/uaccess.h:11, from include/linux/sched/task.h:11, from include/linux/sched/signal.h:9, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from fs/cachefiles/daemon.c:13: arch/ia64/include/asm/mmu_context.h: In function 'reload_context': arch/ia64/include/asm/mmu_context.h:127:48: warning: variable 'old_rr4' set but not used [-Wunused-but-set-variable] 127 | unsigned long rr0, rr1, rr2, rr3, rr4, old_rr4; | ^~~~~~~ fs/cachefiles/daemon.c: In function 'cachefiles_ondemand_fd_write_iter': >> fs/cachefiles/daemon.c:160:26: error: invalid use of undefined type 'struct iov_iter' 160 | size_t len = iter->count; | ^~ vim +160 fs/cachefiles/daemon.c 153 154 static ssize_t cachefiles_ondemand_fd_write_iter(struct kiocb *kiocb, 155 struct iov_iter *iter) 156 { 157 struct cachefiles_object *object = kiocb->ki_filp->private_data; 158 struct cachefiles_cache *cache = object->volume->cache; 159 struct file *file = object->file; > 160 size_t len = iter->count; 161 loff_t pos = kiocb->ki_pos; 162 const struct cred *saved_cred; 163 int ret; 164 165 if (!file) 166 return -ENOBUFS; 167 168 cachefiles_begin_secure(cache, &saved_cred); 169 ret = __cachefiles_prepare_write(object, file, &pos, &len, true); 170 cachefiles_end_secure(cache, saved_cred); 171 if (ret < 0) 172 return ret; 173 174 ret = __cachefiles_write(object, file, pos, iter, NULL, NULL); 175 if (!ret) 176 ret = len; 177 178 return ret; 179 } 180 --- 0-DAY CI Kernel Test Service https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx