linux-kernel - Re: [PATCH 4/4] f2fs: Use module_{subinit, subeixt} helper macros

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Message-ID: <4b932baf-9b43-42cd-9d9b-8048009d6d42@linux.dev>
Date: Wed, 24 Jul 2024 10:14:58 +0800
From: Youling Tang <youling.tang@...ux.dev>
To: kernel test robot <lkp@...el.com>, Arnd Bergmann <arnd@...db.de>,
 Luis Chamberlain <mcgrof@...nel.org>, Chris Mason
 <chris.mason@...ionio.com>, Josef Bacik <josef@...icpanda.com>,
 David Sterba <dsterba@...e.com>, tytso@....edu,
 Andreas Dilger <adilger.kernel@...ger.ca>, Jaegeuk Kim <jaegeuk@...nel.org>,
 Chao Yu <yuchao0@...wei.com>, Chao Yu <chao@...nel.org>,
 Christoph Hellwig <hch@...radead.org>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
 linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-modules@...r.kernel.org, linux-btrfs@...r.kernel.org,
 linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net,
 Youling Tang <tangyouling@...inos.cn>
Subject: Re: [PATCH 4/4] f2fs: Use module_{subinit, subeixt} helper macros

On 24/07/2024 02:51, kernel test robot wrote:
> Hi Youling,
>
> kernel test robot noticed the following build warnings:
>
> [auto build test WARNING on kdave/for-next]
> [also build test WARNING on linus/master next-20240723]
> [cannot apply to jaegeuk-f2fs/dev-test jaegeuk-f2fs/dev soc/for-next v6.10]
> [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/Youling-Tang/module-Add-module_subinit-_noexit-and-module_subeixt-helper-macros/20240723-164434
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git for-next
> patch link:    https://lore.kernel.org/r/20240723083239.41533-5-youling.tang%40linux.dev
> patch subject: [PATCH 4/4] f2fs: Use module_{subinit, subeixt} helper macros
> config: i386-buildonly-randconfig-004-20240724 (https://download.01.org/0day-ci/archive/20240724/202407240204.KcPiCniO-lkp@intel.com/config)
> compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240724/202407240204.KcPiCniO-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/202407240204.KcPiCniO-lkp@intel.com/
>
> All warnings (new ones prefixed by >>):
>
>     In file included from fs/f2fs/node.c:16:
>>> fs/f2fs/f2fs.h:4131:57: warning: non-void function does not return a value [-Wreturn-type]
>      4131 | static inline int __init f2fs_create_root_stats(void) { }

I'll fix it later.
static inline int __init f2fs_create_root_stats(void) { return 0; }
>           |                                                         ^
>     1 warning generated.
> --
>     In file included from fs/f2fs/data.c:25:
>>> fs/f2fs/f2fs.h:4131:57: warning: non-void function does not return a value [-Wreturn-type]
>      4131 | static inline int __init f2fs_create_root_stats(void) { }
>           |                                                         ^
>     fs/f2fs/data.c:2373:10: warning: variable 'index' set but not used [-Wunused-but-set-variable]
>      2373 |         pgoff_t index;
>           |                 ^
>     2 warnings generated.
index = folio_index(folio);
This statement should be moved to CONFIG_F2FS_FS_COMPRESSION.

I'll send a separate patch to fix it if it needs to be modified.