linux-kernel - fs/nfs/super.c:90:40: warning: unused variable 'nfs_ssc_clnt_ops

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Date:   Wed, 14 Apr 2021 21:50:13 +0800
From:   kernel test robot <lkp@...el.com>
To:     Dai Ngo <dai.ngo@...cle.com>
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-kernel@...r.kernel.org, Chuck Lever <chuck.lever@...cle.com>
Subject: fs/nfs/super.c:90:40: warning: unused variable 'nfs_ssc_clnt_ops_tbl'

Hi Dai,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   50987beca096a7ed4f453a6da245fd6a2fadedeb
commit: 02591f9febd5f69bb4c266a4abf899c4cf21964f NFSv4_2: SSC helper should use its own config.
date:   3 months ago
config: arm-randconfig-r016-20210414 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 9829f5e6b1bca9b61efc629770d28bb9014dec45)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=02591f9febd5f69bb4c266a4abf899c4cf21964f
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 02591f9febd5f69bb4c266a4abf899c4cf21964f
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> fs/nfs/super.c:90:40: warning: unused variable 'nfs_ssc_clnt_ops_tbl' [-Wunused-const-variable]
   static const struct nfs_ssc_client_ops nfs_ssc_clnt_ops_tbl = {
                                          ^
   1 warning generated.
--
>> fs/nfs/nfs4file.c:410:41: warning: unused variable 'nfs4_ssc_clnt_ops_tbl' [-Wunused-const-variable]
   static const struct nfs4_ssc_client_ops nfs4_ssc_clnt_ops_tbl = {
                                           ^
   1 warning generated.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for ARM_CPU_SUSPEND
   Depends on ARCH_SUSPEND_POSSIBLE
   Selected by
   - ARM_QCOM_SPM_CPUIDLE && CPU_IDLE && (ARM || ARM64) && (ARCH_QCOM || COMPILE_TEST && !ARM64


vim +/nfs_ssc_clnt_ops_tbl +90 fs/nfs/super.c

f7b422b17ee5ee David Howells 2006-06-09  88  
02591f9febd5f6 Dai Ngo       2021-01-28  89  #ifdef CONFIG_NFS_V4_2
0cfcd405e758ba Dai Ngo       2020-10-18 @90  static const struct nfs_ssc_client_ops nfs_ssc_clnt_ops_tbl = {
0cfcd405e758ba Dai Ngo       2020-10-18  91  	.sco_sb_deactive = nfs_sb_deactive,
0cfcd405e758ba Dai Ngo       2020-10-18  92  };
02591f9febd5f6 Dai Ngo       2021-01-28  93  #endif
0cfcd405e758ba Dai Ngo       2020-10-18  94  

:::::: The code at line 90 was first introduced by commit
:::::: 0cfcd405e758ba1d277e58436fb32f06888c3e41 NFSv4.2: Fix NFS4ERR_STALE error when doing inter server copy

:::::: TO: Dai Ngo <dai.ngo@...cle.com>
:::::: CC: J. Bruce Fields <bfields@...hat.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (38210 bytes)