[linux-next:master 6011/11791] fs/nfs/super.c:90:40: warning: unused variable 'nfs_ssc_clnt_ops_tbl'

From: kernel test robot <lkp@intel.com>
To: Dai Ngo <dai.ngo@oracle.com>
Cc: kbuild-all@lists.01.org, clang-built-linux@googlegroups.com,
	Linux Memory Management List <linux-mm@kvack.org>,
	Chuck Lever <chuck.lever@oracle.com>
Subject: [linux-next:master 6011/11791] fs/nfs/super.c:90:40: warning: unused variable 'nfs_ssc_clnt_ops_tbl'
Date: Fri, 19 Feb 2021 21:04:06 +0800	[thread overview]
Message-ID: <202102192159.vSI24Z2E-lkp@intel.com> (raw)

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   ff90dfd2579b2c7bc1f0baa0cb99c918c6c1ec64
commit: 02591f9febd5f69bb4c266a4abf899c4cf21964f [6011/11791] NFSv4_2: SSC helper should use its own config.
config: x86_64-randconfig-r034-20210219 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476)
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 x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=02591f9febd5f69bb4c266a4abf899c4cf21964f
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 02591f9febd5f69bb4c266a4abf899c4cf21964f
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

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@oracle.com>
:::::: CC: J. Bruce Fields <bfields@redhat.com>

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

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