[jack-fs:for_next 1/3] Warning: fs/mpage.c:661 function parameter 'write_folio' not described in '__mpage_writepages'

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs.git for_next
head:   10b7ecccce237079075f95b5363e4195bc8effcf
commit: 90347d82e4d3fa1705e513f04066f7c9c2b34694 [1/3] mpage: Provide variant of mpage_writepages() with own optional folio handler
config: s390-randconfig-002-20260327 (https://download.01.org/0day-ci/archive/20260327/202603271237.fYLJnhTP-lkp@intel.com/config)
compiler: s390-linux-gcc (GCC) 12.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260327/202603271237.fYLJnhTP-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/202603271237.fYLJnhTP-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> Warning: fs/mpage.c:661 function parameter 'write_folio' not described in '__mpage_writepages'
>> Warning: fs/mpage.c:661 expecting prototype for mpage_writepages(). Prototype was for __mpage_writepages() instead

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for OF_GPIO
   Depends on [n]: GPIOLIB [=y] && OF [=y] && HAS_IOMEM [=n]
   Selected by [m]:
   - REGULATOR_RT5133 [=m] && REGULATOR [=y] && I2C [=y] && GPIOLIB [=y] && OF [=y]

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