Re: [PATCH v2 12/13] mm: Add sysctl vm.compress-batching switch for compress batching during swapout.

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

Hi Kanchana,

kernel test robot noticed the following build errors:

[auto build test ERROR on 5c4cf96cd70230100b5d396d45a5c9a332539d19]

url:    https://github.com/intel-lab-lkp/linux/commits/Kanchana-P-Sridhar/crypto-acomp-Define-two-new-interfaces-for-compress-decompress-batching/20241103-112337
base:   5c4cf96cd70230100b5d396d45a5c9a332539d19
patch link:    https://lore.kernel.org/r/20241103032111.333282-13-kanchana.p.sridhar%40intel.com
patch subject: [PATCH v2 12/13] mm: Add sysctl vm.compress-batching switch for compress batching during swapout.
config: i386-buildonly-randconfig-002-20241103 (https://download.01.org/0day-ci/archive/20241103/202411031803.xNibgI5N-lkp@intel.com/config)
compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241103/202411031803.xNibgI5N-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/202411031803.xNibgI5N-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from mm/swap.c:17:
   In file included from include/linux/mm.h:2213:
   include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     518 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
   In file included from mm/swap.c:26:
   include/linux/mm_inline.h:47:41: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
      47 |         __mod_lruvec_state(lruvec, NR_LRU_BASE + lru, nr_pages);
         |                                    ~~~~~~~~~~~ ^ ~~~
   include/linux/mm_inline.h:49:22: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
      49 |                                 NR_ZONE_LRU_BASE + lru, nr_pages);
         |                                 ~~~~~~~~~~~~~~~~ ^ ~~~
>> mm/swap.c:51:14: error: expected identifier or '('
      51 | unsigned int compress_batching;
         |              ^
   include/linux/mm.h:88:27: note: expanded from macro 'compress_batching'
      88 | #define compress_batching 0
         |                           ^
>> mm/swap.c:1082:20: error: expression is not assignable
    1082 |         compress_batching = 0;
         |         ~~~~~~~~~~~~~~~~~ ^
   3 warnings and 2 errors generated.


vim +51 mm/swap.c

    49	
    50	/* Enable/disable compress batching during swapout. */
  > 51	unsigned int compress_batching;
    52	

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