[chao:feature/subpage_gcache_lfolio 13/41] fs/f2fs/cache.c:149:5-24: WARNING: atomic_dec_and_test variation before object free at line 150.

[chao:feature/subpage_gcache_lfolio 13/41] fs/f2fs/cache.c:149:5-24: WARNING: atomic_dec_and_test variation before object free at line 150.

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git feature/subpage_gcache_lfolio
head:   85e9b85e94464a410d9809d9743aea8f7c49ddc5
commit: ec9281a9d7bb7b46d8a921f9f1c6a4a17f4c3817 [13/41] f2fs: cache: implement metadata cache
config: parisc-randconfig-r2103-20260923 (https://download.01.org/0day-ci/archive/20260923/202609230446.s7bSxkDS-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 8.5.0

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/202609230446.s7bSxkDS-lkp@intel.com/

cocci warnings: (new ones prefixed by >>)
>> fs/f2fs/cache.c:149:5-24: WARNING: atomic_dec_and_test variation before object free at line 150.

vim +149 fs/f2fs/cache.c

   145	
   146	static bool f2fs_cache_put(struct f2fs_cached_block *entry)
   147	{
   148		WARN_ON_ONCE(!f2fs_cache_refcount(entry));
 > 149		if (atomic_dec_and_test(&entry->refcount)) {
 > 150			f2fs_free_cache(entry);
   151			return true;
   152		}
   153		return false;
   154	}
   155	

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki