linux-kernel - Re: [PATCH] fs: remove stale and duplicate forward declarations

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Message-ID: <202512301303.s7YWTZHA-lkp@intel.com>
Date: Tue, 30 Dec 2025 13:20:51 +0100
From: kernel test robot <lkp@...el.com>
To: Yuto Ohnuki <ytohnuki@...zon.com>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: oe-kbuild-all@...ts.linux.dev, Yuto Ohnuki <ytohnuki@...zon.com>
Subject: Re: [PATCH] fs: remove stale and duplicate forward declarations

Hi Yuto,

kernel test robot noticed the following build warnings:

[auto build test WARNING on brauner-vfs/vfs.all]
[also build test WARNING on linus/master v6.19-rc3 next-20251219]
[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/Yuto-Ohnuki/fs-remove-stale-and-duplicate-forward-declarations/20251229-151612
base:   https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git vfs.all
patch link:    https://lore.kernel.org/r/20251229071401.98146-1-ytohnuki%40amazon.com
patch subject: [PATCH] fs: remove stale and duplicate forward declarations
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20251230/202512301303.s7YWTZHA-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
rustc: rustc 1.88.0 (6b00bc388 2025-06-23)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251230/202512301303.s7YWTZHA-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202512301303.s7YWTZHA-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> clang diag: include/linux/blkdev.h:1656:41: warning: declaration of 'struct hd_geometry' will not be visible outside of this function [-Wvisibility]
--
   In file included from rust/helpers/helpers.c:16:
   In file included from rust/helpers/blk.c:3:
   In file included from include/linux/blk-mq.h:5:
>> include/linux/blkdev.h:1656:41: warning: declaration of 'struct hd_geometry' will not be visible outside of this function [-Wvisibility]
    1656 |         int (*getgeo)(struct gendisk *, struct hd_geometry *);
         |                                                ^
   1 warning generated.

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki