Re: [PATCH RFC 6/7] ext4: Enable negative dentries on case-insensitive lookup

[kernel test robot <lkp@intel.com>]

Hi Gabriel,

[FYI, it's a private test report for your RFC patch.]
[auto build test ERROR on tytso-ext4/dev]
[also build test ERROR on jaegeuk-f2fs/dev-test linus/master v5.18 next-20220602]
[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/Gabriel-Krisman-Bertazi/Support-negative-dentries-on-case-insensitive-directories/20220602-045701
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev
config: x86_64-randconfig-a012 (https://download.01.org/0day-ci/archive/20220602/202206021623.iDro7upg-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project b364c76683f8ef241025a9556300778c07b590c2)
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/db089738c1bb7cfe1cd4be09ba3c6eed1a9cd1ac
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Gabriel-Krisman-Bertazi/Support-negative-dentries-on-case-insensitive-directories/20220602-045701
        git checkout db089738c1bb7cfe1cd4be09ba3c6eed1a9cd1ac
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "d_set_casefold_lookup" [fs/ext4/ext4.ko] undefined!

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp