Re: [PATCH] exfat: implement swap activate

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

Hi Andrea,

kernel test robot noticed the following build errors:

[auto build test ERROR on e771677c937da5808f7b6c1f0e4a97ec1a84f8a8]

url:    https://github.com/intel-lab-lkp/linux/commits/Andrea-Cervesato/exfat-implement-swap-activate/20260622-172327
base:   e771677c937da5808f7b6c1f0e4a97ec1a84f8a8
patch link:    https://lore.kernel.org/r/20260618-exfat_swap_activate-v1-1-4c6a465df295%40suse.com
patch subject: [PATCH] exfat: implement swap activate
config: microblaze-allyesconfig (https://download.01.org/0day-ci/archive/20260624/202606241018.4N100hSQ-lkp@intel.com/config)
compiler: microblaze-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260624/202606241018.4N100hSQ-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/202606241018.4N100hSQ-lkp@intel.com/

All errors (new ones prefixed by >>):

   fs/exfat/inode.c: In function 'exfat_swap_activate':
>> fs/exfat/inode.c:556:16: error: implicit declaration of function 'generic_swapfile_activate' [-Wimplicit-function-declaration]
     556 |         return generic_swapfile_activate(sis, file, span);
         |                ^~~~~~~~~~~~~~~~~~~~~~~~~


vim +/generic_swapfile_activate +556 fs/exfat/inode.c

   537	
   538	static int exfat_swap_activate(struct swap_info_struct *sis,
   539				       struct file *file, sector_t *span)
   540	{
   541		struct inode *inode = file_inode(file);
   542		struct exfat_inode_info *ei = EXFAT_I(inode);
   543		int ret;
   544	
   545		/*
   546		 * exfat's fallocate allocates clusters without updating valid_size,
   547		 * leaving them invisible to bmap(). Extend valid_size to i_size so
   548		 * that generic_swapfile_activate() can map all blocks.
   549		 */
   550		if (ei->valid_size < i_size_read(inode)) {
   551			ret = exfat_extend_valid_size(inode, i_size_read(inode));
   552			if (ret)
   553				return ret;
   554		}
   555	
 > 556		return generic_swapfile_activate(sis, file, span);
   557	}
   558	

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