Re: [PATCH 04/16] relay: update relay to use mmap_prepare

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

Hi Lorenzo,

kernel test robot noticed the following build warnings:

[auto build test WARNING on akpm-mm/mm-everything]
[also build test WARNING on brauner-vfs/vfs.all char-misc/char-misc-testing char-misc/char-misc-next char-misc/char-misc-linus s390/features lwn/docs-next linus/master v6.17-rc5 next-20250908]
[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/Lorenzo-Stoakes/mm-shmem-update-shmem-to-use-mmap_prepare/20250908-191516
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/9cfe531c6d250665dfae940afdb54c9bd2e9ba37.1757329751.git.lorenzo.stoakes%40oracle.com
patch subject: [PATCH 04/16] relay: update relay to use mmap_prepare
config: i386-buildonly-randconfig-002-20250909 (https://download.01.org/0day-ci/archive/20250909/202509091137.FMoksKmh-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250909/202509091137.FMoksKmh-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/202509091137.FMoksKmh-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> Warning: kernel/relay.c:83 function parameter 'buf' not described in 'relay_mmap_prepare_buf'

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