Re: [RFC PATCH v3 14/21] mm/zsmalloc: convert zs_page_{isolate,migrate,putback} to use zsdesc

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

Hi Hyeonggon,

[This is a private test report for your RFC patch.]
kernel test robot noticed the following build warnings:

[auto build test WARNING on akpm-mm/mm-everything]

url:    https://github.com/intel-lab-lkp/linux/commits/Hyeonggon-Yoo/mm-zsmalloc-create-new-struct-zsdesc/20231130-181616
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20231130101242.2590384-15-42.hyeyoo%40gmail.com
patch subject: [RFC PATCH v3 14/21] mm/zsmalloc: convert zs_page_{isolate,migrate,putback} to use zsdesc
config: i386-randconfig-002-20231202 (https://download.01.org/0day-ci/archive/20231206/202312060420.woW6hGsl-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231206/202312060420.woW6hGsl-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/202312060420.woW6hGsl-lkp@intel.com/

All warnings (new ones prefixed by >>):

   mm/zsmalloc.c:388:14: warning: no previous prototype for function 'zsdesc_zone' [-Wmissing-prototypes]
   struct zone *zsdesc_zone(struct zsdesc *zsdesc)
                ^
   mm/zsmalloc.c:388:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   struct zone *zsdesc_zone(struct zsdesc *zsdesc)
   ^
   static 
   mm/zsmalloc.c:286:29: warning: unused function 'zsdesc_pfn' [-Wunused-function]
   static inline unsigned long zsdesc_pfn(const struct zsdesc *zsdesc)
                               ^
>> mm/zsmalloc.c:383:20: warning: function 'zsdesc_is_isolated' is not needed and will not be emitted [-Wunneeded-internal-declaration]
   static inline bool zsdesc_is_isolated(struct zsdesc *zsdesc)
                      ^
   3 warnings generated.


vim +/zsdesc_is_isolated +383 mm/zsmalloc.c

   382	
 > 383	static inline bool zsdesc_is_isolated(struct zsdesc *zsdesc)
   384	{
   385		return PageIsolated(zsdesc_page(zsdesc));
   386	}
   387	
 > 388	struct zone *zsdesc_zone(struct zsdesc *zsdesc)
   389	{
   390		return page_zone(zsdesc_page(zsdesc));
   391	}
   392	

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