Hi Theodore,

kernel test robot noticed the following build warnings:

[auto build test WARNING on tytso-ext4/dev]
[also build test WARNING on linus/master v6.16-rc5 next-20250711]
[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#_base_tree_information]

url:    
https://github.com/intel-lab-lkp/linux/commits/Theodore-Ts-o/ext4-use-memcpy-instead-of-strcpy/20250713-021635
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev
patch link:    https://lore.kernel.org/r/20250712181249.434530-3-tytso%40mit.edu
patch subject: [PATCH 3/3] ext4: refactor the inline directory conversion and 
new directory codepaths
config: i386-buildonly-randconfig-004-20250713 
(https://download.01.org/0day-ci/archive/20250713/202507130429.rpizofcd-...@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0
reproduce (this is a W=1 build): 
(https://download.01.org/0day-ci/archive/20250713/202507130429.rpizofcd-...@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <l...@intel.com>
| Closes: 
https://lore.kernel.org/oe-kbuild-all/202507130429.rpizofcd-...@intel.com/

All warnings (new ones prefixed by >>):

   fs/ext4/namei.c: In function 'ext4_init_new_dir':
>> fs/ext4/namei.c:2968:34: warning: variable 'de' set but not used 
>> [-Wunused-but-set-variable]
    2968 |         struct ext4_dir_entry_2 *de;
         |                                  ^~


vim +/de +2968 fs/ext4/namei.c

a774f9c20e0864 Tao Ma             2012-12-10  2963  
8016e29f4362e2 Harshad Shirwadkar 2020-10-15  2964  int 
ext4_init_new_dir(handle_t *handle, struct inode *dir,
a774f9c20e0864 Tao Ma             2012-12-10  2965                           
struct inode *inode)
ac27a0ec112a08 Dave Kleikamp      2006-10-11  2966  {
dabd991f9d8e32 Namhyung Kim       2011-01-10  2967      struct buffer_head 
*dir_block = NULL;
617ba13b31fbf5 Mingming Cao       2006-10-11 @2968      struct ext4_dir_entry_2 
*de;
dc6982ff4db1f4 Theodore Ts'o      2013-02-14  2969      ext4_lblk_t block = 0;
a774f9c20e0864 Tao Ma             2012-12-10  2970      int err;
ac27a0ec112a08 Dave Kleikamp      2006-10-11  2971  
3c47d54170b6a6 Tao Ma             2012-12-10  2972      if 
(ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA)) {
3c47d54170b6a6 Tao Ma             2012-12-10  2973              err = 
ext4_try_create_inline_dir(handle, dir, inode);
3c47d54170b6a6 Tao Ma             2012-12-10  2974              if (err < 0 && 
err != -ENOSPC)
3c47d54170b6a6 Tao Ma             2012-12-10  2975                      goto 
out;
3c47d54170b6a6 Tao Ma             2012-12-10  2976              if (!err)
3c47d54170b6a6 Tao Ma             2012-12-10  2977                      goto 
out;
3c47d54170b6a6 Tao Ma             2012-12-10  2978      }
3c47d54170b6a6 Tao Ma             2012-12-10  2979  
5eb8361f6b02c3 Theodore Ts'o      2025-07-12  2980      set_nlink(inode, 2);
dc6982ff4db1f4 Theodore Ts'o      2013-02-14  2981      inode->i_size = 0;
0f70b40613ee14 Theodore Ts'o      2013-02-15  2982      dir_block = 
ext4_append(handle, inode, &block);
0f70b40613ee14 Theodore Ts'o      2013-02-15  2983      if (IS_ERR(dir_block))
0f70b40613ee14 Theodore Ts'o      2013-02-15  2984              return 
PTR_ERR(dir_block);
a774f9c20e0864 Tao Ma             2012-12-10  2985      de = (struct 
ext4_dir_entry_2 *)dir_block->b_data;
5eb8361f6b02c3 Theodore Ts'o      2025-07-12  2986      err = 
ext4_init_dirblock(handle, inode, dir_block, dir->i_ino, NULL, 0);
a774f9c20e0864 Tao Ma             2012-12-10  2987      if (err)
a774f9c20e0864 Tao Ma             2012-12-10  2988              goto out;
a774f9c20e0864 Tao Ma             2012-12-10  2989  out:
a774f9c20e0864 Tao Ma             2012-12-10  2990      brelse(dir_block);
a774f9c20e0864 Tao Ma             2012-12-10  2991      return err;
a774f9c20e0864 Tao Ma             2012-12-10  2992  }
a774f9c20e0864 Tao Ma             2012-12-10  2993  

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https://github.com/intel/lkp-tests/wiki

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