Re: [PATCH 1/8] mm: implement cleancache

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

Hi Suren,

kernel test robot noticed the following build errors:

[auto build test ERROR on 70478cb9da6fc4e7b987219173ba1681d5f7dd3d]

url:    https://github.com/intel-lab-lkp/linux/commits/Suren-Baghdasaryan/mm-implement-cleancache/20251010-134501
base:   70478cb9da6fc4e7b987219173ba1681d5f7dd3d
patch link:    https://lore.kernel.org/r/20251010011951.2136980-2-surenb%40google.com
patch subject: [PATCH 1/8] mm: implement cleancache
config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20251011/202510110501.92Srmvgx-lkp@intel.com/config)
compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251011/202510110501.92Srmvgx-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/202510110501.92Srmvgx-lkp@intel.com/

All errors (new ones prefixed by >>):

>> mm/cleancache.c:119:13: error: casting from randomized structure pointer type 'struct address_space *' to 'struct cleancache_inode *'
     119 |         *ccinode = (struct cleancache_inode *)folio->mapping;
         |                    ^
   1 error generated.


vim +119 mm/cleancache.c

   113	
   114	static void folio_attachment(struct folio *folio, struct cleancache_inode **ccinode,
   115				     unsigned long *offset)
   116	{
   117		lockdep_assert_held(&(folio_pool(folio)->lock));
   118	
 > 119		*ccinode = (struct cleancache_inode *)folio->mapping;
   120		*offset = folio->index;
   121	}
   122	

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