Re: [PATCH 4/5] tmpfs: Expose filesystem features via sysfs

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

Hi André,

kernel test robot noticed the following build warnings:

[auto build test WARNING on akpm-mm/mm-everything]
[also build test WARNING on linus/master v6.11-rc5 next-20240826]
[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/tmpfs-Add-casefold-lookup-support/20240826-135457
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20240823173332.281211-5-andrealmeid%40igalia.com
patch subject: [PATCH 4/5] tmpfs: Expose filesystem features via sysfs
config: i386-randconfig-063-20240827 (https://download.01.org/0day-ci/archive/20240827/202408270618.4ue8oNhS-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240827/202408270618.4ue8oNhS-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/202408270618.4ue8oNhS-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> mm/shmem.c:5515:1: sparse: sparse: symbol 'dev_attr_casefold' was not declared. Should it be static?

vim +/dev_attr_casefold +5515 mm/shmem.c

  5512	
  5513	#if defined(CONFIG_SYSFS) && defined(CONFIG_TMPFS)
  5514	#if IS_ENABLED(CONFIG_UNICODE)
> 5515	DEVICE_STRING_ATTR_RO(casefold, 0444, "supported");
  5516	#endif
  5517	

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