kernel test robot [off-list ref] writes:

Hi Ritesh,

kernel test robot noticed the following build warnings:

[auto build test WARNING on akpm-mm/mm-everything]
[also build test WARNING on linux-review/Ritesh-Harjani-IBM/include-linux-swap-h-Remove-unused-leftovers/20260611-111124 next-20260611]
[cannot apply to powerpc/next powerpc/fixes linus/master v7.1-rc7]
[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/Ritesh-Harjani-IBM/mm-swap-make-SWAPFILE_CLUSTER-runtime/20260611-181121
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/3abf510d24c8ef17bd5e324cccc5e03e548afade.1781170904.git.ritesh.list%40gmail.com
patch subject: [PATCH v2 3/3] powerpc: Kconfig: Enable THP_SWAP on Book3S64
config: arm64-randconfig-r133-20260611 (https://download.01.org/0day-ci/archive/20260612/202606121305.h0cxjhP2-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 8.5.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260612/202606121305.h0cxjhP2-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 [off-list ref]
| Closes: https://lore.kernel.org/oe-kbuild-all/202606121305.h0cxjhP2-lkp@intel.com/ (local)

sparse warnings: (new ones prefixed by >>)

quoted

quoted

mm/swapfile.c:133:6: sparse: sparse: symbol 'swap_table_use_page' was not declared. Should it be static?

vim +/swap_table_use_page +133 mm/swapfile.c

   131	
   132	unsigned int swap_slots_in_cluster __read_mostly;
 > 133	bool swap_table_use_page __read_mostly;
   134	

I had noticed this after sending the v2. But by then it was late.
Good that the sparse checker caught it.

So, I will declare this variable as static - that should fix the
sparse warning. I will spin a v3 in sometime with this fixed.

-ritesh