[linux-next:master 10056/11507] security/apparmor/apparmorfs.c:1391:37: warning: 'seq_ns_compress_max_fops' defined but not used

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   415606a7be939835db9b0d6b711887586646346d
commit: 1c5f27e845e84f58ed6bbe3e6bc12d6a013e74b5 [10056/11507] apparmor: Fix build failure when ZSTD_DECOMPRESS is not enabled
config: sparc-randconfig-002-20260801 (https://download.01.org/0day-ci/archive/20260801/[email protected]/config)
compiler: sparc-linux-gcc (GCC) 11.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260801/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All warnings (new ones prefixed by >>):

   security/apparmor/apparmorfs.c: In function 'rawdata_open':
   security/apparmor/apparmorfs.c:1602:17: error: implicit declaration of function 'decompress_zstd' [-Werror=implicit-function-declaration]
    1602 |         error = decompress_zstd(loaddata->data, loaddata->compressed_size,
         |                 ^~~~~~~~~~~~~~~
   At top level:
>> security/apparmor/apparmorfs.c:1391:37: warning: 'seq_ns_compress_max_fops' defined but not used [-Wunused-const-variable=]
    1391 | static const struct file_operations seq_ns_ ##NAME ##_fops = {        \
         |                                     ^~~~~~~
   security/apparmor/apparmorfs.c:1470:1: note: in expansion of macro 'SEQ_NS_FOPS'
    1470 | SEQ_NS_FOPS(compress_max);
         | ^~~~~~~~~~~
>> security/apparmor/apparmorfs.c:1391:37: warning: 'seq_ns_compress_min_fops' defined but not used [-Wunused-const-variable=]
    1391 | static const struct file_operations seq_ns_ ##NAME ##_fops = {        \
         |                                     ^~~~~~~
   security/apparmor/apparmorfs.c:1469:1: note: in expansion of macro 'SEQ_NS_FOPS'
    1469 | SEQ_NS_FOPS(compress_min);
         | ^~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/seq_ns_compress_max_fops +1391 security/apparmor/apparmorfs.c

f8eb8a1324e819 John Johansen 2013-08-14  1378  
64c8697045f877 John Johansen 2017-05-25  1379  /*
64c8697045f877 John Johansen 2017-05-25  1380   * namespace based files
64c8697045f877 John Johansen 2017-05-25  1381   *     several root files and
64c8697045f877 John Johansen 2017-05-25  1382   *     policy/ *
64c8697045f877 John Johansen 2017-05-25  1383   */
f8eb8a1324e819 John Johansen 2013-08-14  1384  
64c8697045f877 John Johansen 2017-05-25  1385  #define SEQ_NS_FOPS(NAME)						      \
64c8697045f877 John Johansen 2017-05-25  1386  static int seq_ns_ ##NAME ##_open(struct inode *inode, struct file *file)     \
64c8697045f877 John Johansen 2017-05-25  1387  {									      \
64c8697045f877 John Johansen 2017-05-25  1388  	return single_open(file, seq_ns_ ##NAME ##_show, inode->i_private);   \
64c8697045f877 John Johansen 2017-05-25  1389  }									      \
64c8697045f877 John Johansen 2017-05-25  1390  									      \
64c8697045f877 John Johansen 2017-05-25 @1391  static const struct file_operations seq_ns_ ##NAME ##_fops = {	      \
64c8697045f877 John Johansen 2017-05-25  1392  	.owner		= THIS_MODULE,					      \
64c8697045f877 John Johansen 2017-05-25  1393  	.open		= seq_ns_ ##NAME ##_open,			      \
64c8697045f877 John Johansen 2017-05-25  1394  	.read		= seq_read,					      \
64c8697045f877 John Johansen 2017-05-25  1395  	.llseek		= seq_lseek,					      \
64c8697045f877 John Johansen 2017-05-25  1396  	.release	= single_release,				      \
64c8697045f877 John Johansen 2017-05-25  1397  }									      \
3e3e569539864d John Johansen 2017-01-16  1398  

:::::: The code at line 1391 was first introduced by commit
:::::: 64c8697045f87713f0648e8429fcc3a0c4c61ffd apparmor: use macro template to simplify namespace seq_files

:::::: TO: John Johansen <[email protected]>
:::::: CC: John Johansen <[email protected]>

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