[kbuild-all] Re: [PATCH v3] loop: don't print warnings if the underlying filesystem doesn't support discard

Hi Mikulas, I love your patch! Yet something to improve: [auto build test ERROR on axboe-block/for-next] [also build test ERROR on kdave/for-next ceph-client/for-linus cifs/for-next tytso-ext4/dev jaegeuk-f2fs/dev-test mszeredi-fuse/for-next linus/master v5.15-rc5 next-20211012] [cannot apply to hch-configfs/for-next gfs2/for-next] [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/Mikulas-Patocka/loop-don-t-print... base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next config: arc-randconfig-r043-20211012 (attached as .config) compiler: arc-elf-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/c381403746bc0dc3eb5db4b157408430f... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Mikulas-Patocka/loop-don-t-print-warnings-if-the-underlying-filesystem-doesn-t-support-discard/20211013-042727 git checkout c381403746bc0dc3eb5db4b157408430febd6ecf # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash fs/fuse/ fs/overlayfs/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): 661 | .fallocate_supported_flags = FALLOC_FL_SUPPORTED_MASK, | ^~~~~~~~~~~~~~~~~~~~~~~~ vim +/FALLOC_FL_SUPPORTED_MASK +661 fs/overlayfs/file.c 651 652 const struct file_operations ovl_file_operations = { 653 .open = ovl_open, 654 .release = ovl_release, 655 .llseek = ovl_llseek, 656 .read_iter = ovl_read_iter, 657 .write_iter = ovl_write_iter, 658 .fsync = ovl_fsync, 659 .mmap = ovl_mmap, 660 .fallocate = ovl_fallocate, 662 .fadvise = ovl_fadvise, 663 .flush = ovl_flush, 664 .splice_read = generic_file_splice_read, 665 .splice_write = ovl_splice_write, 666 667 .copy_file_range = ovl_copy_file_range, 668 .remap_file_range = ovl_remap_file_range, 669 }; 670 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org