[brauner-vfs:b4/vfs-bdev-file 41/42] fs/ntfs3/fsntfs.c:1011:23: warning: unused variable 'bdev'

[brauner-vfs:b4/vfs-bdev-file 41/42] fs/ntfs3/fsntfs.c:1011:23: warning: unused variable 'bdev'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git b4/vfs-bdev-file
head:   81a0b5d317a5188e7e8aaf68adf070d44c7a3eea
commit: 6d26064a464a6f8ace90a2176a17bd6f853825e0 [41/42] [DRAFT] buffer: port block device access to files and get rid of bd_inode access
config: i386-buildonly-randconfig-002-20240103 (https://download.01.org/0day-ci/archive/20240104/202401040431.fnq6ljbX-lkp@intel.com/config)
compiler: ClangBuiltLinux clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240104/202401040431.fnq6ljbX-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/202401040431.fnq6ljbX-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> fs/ntfs3/fsntfs.c:1011:23: warning: unused variable 'bdev' [-Wunused-variable]
    1011 |         struct block_device *bdev = sb->s_bdev;
         |                              ^~~~
   fs/ntfs3/fsntfs.c:1041:23: warning: unused variable 'bdev' [-Wunused-variable]
    1041 |         struct block_device *bdev = sb->s_bdev;
         |                              ^~~~
   2 warnings generated.


vim +/bdev +1011 fs/ntfs3/fsntfs.c

82cae269cfa953 Konstantin Komarov 2021-08-13  1008  
82cae269cfa953 Konstantin Komarov 2021-08-13  1009  int ntfs_sb_read(struct super_block *sb, u64 lbo, size_t bytes, void *buffer)
82cae269cfa953 Konstantin Komarov 2021-08-13  1010  {
82cae269cfa953 Konstantin Komarov 2021-08-13 @1011  	struct block_device *bdev = sb->s_bdev;
82cae269cfa953 Konstantin Komarov 2021-08-13  1012  	u32 blocksize = sb->s_blocksize;
82cae269cfa953 Konstantin Komarov 2021-08-13  1013  	u64 block = lbo >> sb->s_blocksize_bits;
82cae269cfa953 Konstantin Komarov 2021-08-13  1014  	u32 off = lbo & (blocksize - 1);
82cae269cfa953 Konstantin Komarov 2021-08-13  1015  	u32 op = blocksize - off;
82cae269cfa953 Konstantin Komarov 2021-08-13  1016  
82cae269cfa953 Konstantin Komarov 2021-08-13  1017  	for (; bytes; block += 1, off = 0, op = blocksize) {
6d26064a464a6f Christian Brauner  2024-01-02  1018  		struct buffer_head *bh = __bread(sb->s_f_bdev, block, blocksize);
82cae269cfa953 Konstantin Komarov 2021-08-13  1019  
82cae269cfa953 Konstantin Komarov 2021-08-13  1020  		if (!bh)
82cae269cfa953 Konstantin Komarov 2021-08-13  1021  			return -EIO;
82cae269cfa953 Konstantin Komarov 2021-08-13  1022  
82cae269cfa953 Konstantin Komarov 2021-08-13  1023  		if (op > bytes)
82cae269cfa953 Konstantin Komarov 2021-08-13  1024  			op = bytes;
82cae269cfa953 Konstantin Komarov 2021-08-13  1025  
82cae269cfa953 Konstantin Komarov 2021-08-13  1026  		memcpy(buffer, bh->b_data + off, op);
82cae269cfa953 Konstantin Komarov 2021-08-13  1027  
82cae269cfa953 Konstantin Komarov 2021-08-13  1028  		put_bh(bh);
82cae269cfa953 Konstantin Komarov 2021-08-13  1029  
82cae269cfa953 Konstantin Komarov 2021-08-13  1030  		bytes -= op;
82cae269cfa953 Konstantin Komarov 2021-08-13  1031  		buffer = Add2Ptr(buffer, op);
82cae269cfa953 Konstantin Komarov 2021-08-13  1032  	}
82cae269cfa953 Konstantin Komarov 2021-08-13  1033  
82cae269cfa953 Konstantin Komarov 2021-08-13  1034  	return 0;
82cae269cfa953 Konstantin Komarov 2021-08-13  1035  }
82cae269cfa953 Konstantin Komarov 2021-08-13  1036  

:::::: The code at line 1011 was first introduced by commit
:::::: 82cae269cfa953032fbb8980a7d554d60fb00b17 fs/ntfs3: Add initialization of super block

:::::: TO: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
:::::: CC: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

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https://github.com/intel/lkp-tests/wiki