Re: [PATCH v2 6/8] tmpfs: Add flag FS_CASEFOLD_FL support for tmpfs dirs

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

Hi André,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]
[also build test ERROR on tytso-ext4/dev brauner-vfs/vfs.all linus/master v6.11-rc6 next-20240903]
[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/Andr-Almeida/unicode-Fix-utf8_load-error-path/20240903-070149
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20240902225511.757831-7-andrealmeid%40igalia.com
patch subject: [PATCH v2 6/8] tmpfs: Add flag FS_CASEFOLD_FL support for tmpfs dirs
config: i386-buildonly-randconfig-005-20240903 (https://download.01.org/0day-ci/archive/20240903/202409031620.BOshMDgn-lkp@intel.com/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240903/202409031620.BOshMDgn-lkp@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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409031620.BOshMDgn-lkp@intel.com/

All errors (new ones prefixed by >>):

>> mm/shmem.c:2771:12: error: no member named 's_encoding' in 'struct super_block'
    2771 |                 if (!sb->s_encoding)
         |                      ~~  ^
   1 error generated.


vim +2771 mm/shmem.c

  2760	
  2761	/*
  2762	 * chattr's fsflags are unrelated to extended attributes,
  2763	 * but tmpfs has chosen to enable them under the same config option.
  2764	 */
  2765	static int shmem_set_inode_flags(struct inode *inode, unsigned int fsflags, struct dentry *dentry)
  2766	{
  2767		unsigned int i_flags = 0, old = inode->i_flags;
  2768		struct super_block *sb = inode->i_sb;
  2769	
  2770		if (fsflags & FS_CASEFOLD_FL) {
> 2771			if (!sb->s_encoding)
  2772				return -EOPNOTSUPP;
  2773	
  2774			if (!S_ISDIR(inode->i_mode))
  2775				return -ENOTDIR;
  2776	
  2777			if (dentry && !simple_empty(dentry))
  2778				return -ENOTEMPTY;
  2779	
  2780			i_flags |= S_CASEFOLD;
  2781		} else if (old & S_CASEFOLD) {
  2782			if (dentry && !simple_empty(dentry))
  2783				return -ENOTEMPTY;
  2784		}
  2785	
  2786		if (fsflags & FS_NOATIME_FL)
  2787			i_flags |= S_NOATIME;
  2788		if (fsflags & FS_APPEND_FL)
  2789			i_flags |= S_APPEND;
  2790		if (fsflags & FS_IMMUTABLE_FL)
  2791			i_flags |= S_IMMUTABLE;
  2792		/*
  2793		 * But FS_NODUMP_FL does not require any action in i_flags.
  2794		 */
  2795		inode_set_flags(inode, i_flags, S_NOATIME | S_APPEND | S_IMMUTABLE | S_CASEFOLD);
  2796	
  2797		return 0;
  2798	}
  2799	#else
  2800	static void shmem_set_inode_flags(struct inode *inode, unsigned int fsflags, struct dentry *dentry)
  2801	{
  2802	}
  2803	#define shmem_initxattrs NULL
  2804	#endif
  2805	

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