Hi Jan,

I love your patch! Yet something to improve:

[auto build test ERROR on ext4/dev]
[also build test ERROR on ext3/for_next linus/master v5.13-rc6 next-20210616]
[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/Jan-Kara/ext4-Speedup-orphan-file-handling/20210617-034806
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev
config: x86_64-randconfig-a011-20210617 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 64720f57bea6a6bf033feef4a5751ab9c0c3b401)
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
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://github.com/0day-ci/linux/commit/6b60fad4c555893cdd03e91dbfe31aa6fa9c25e7
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Jan-Kara/ext4-Speedup-orphan-file-handling/20210617-034806
        git checkout 6b60fad4c555893cdd03e91dbfe31aa6fa9c25e7
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All errors (new ones prefixed by >>):

quoted

fs/ext4/orphan.c:195:9: error: implicit declaration of function 'dquot_quota_on_mount' [-Werror,-Wimplicit-function-declaration]

           return dquot_quota_on_mount(sb, EXT4_SB(sb)->s_qf_names[type],
                  ^
   fs/ext4/orphan.c:195:9: note: did you mean 'ext4_quota_on_mount'?
   fs/ext4/orphan.c:193:12: note: 'ext4_quota_on_mount' declared here
   static int ext4_quota_on_mount(struct super_block *sb, int type)
              ^

quoted

fs/ext4/orphan.c:195:47: error: no member named 's_qf_names' in 'struct ext4_sb_info'

           return dquot_quota_on_mount(sb, EXT4_SB(sb)->s_qf_names[type],
                                           ~~~~~~~~~~~  ^

quoted

fs/ext4/orphan.c:196:19: error: no member named 's_jquota_fmt' in 'struct ext4_sb_info'

                                           EXT4_SB(sb)->s_jquota_fmt, type);
                                           ~~~~~~~~~~~  ^
   3 errors generated.


vim +/dquot_quota_on_mount +195 fs/ext4/orphan.c

   192	
   193	static int ext4_quota_on_mount(struct super_block *sb, int type)
   194	{
 > 195		return dquot_quota_on_mount(sb, EXT4_SB(sb)->s_qf_names[type],
 > 196						EXT4_SB(sb)->s_jquota_fmt, type);
   197	}
   198	

---
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