[hch-xfs:xfs-trans-cleanups 5/8] fs/xfs/xfs_inode.c:2939:6: warning: variable 'error' is used uninitialized whenever 'if' condition is false

[kernel test robot <lkp@intel.com>]

tree:   git://git.infradead.org/users/hch/xfs xfs-trans-cleanups
head:   eabea0b216f4782b4f15143d5b411b113026a69b
commit: 9823a1576f363cb62d4ad064359cb2c7b5d2c49a [5/8] xfs: return the allocated transaction from xfs_trans_alloc_empty
config: arm64-randconfig-004-20250715 (https://download.01.org/0day-ci/archive/20250715/202507152359.IWcfY6aZ-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project 16534d19bf50bde879a83f0ae62875e2c5120e64)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250715/202507152359.IWcfY6aZ-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/202507152359.IWcfY6aZ-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> fs/xfs/xfs_inode.c:2939:6: warning: variable 'error' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
    2939 |         if (xfs_inode_unlinked_incomplete(ip))
         |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   fs/xfs/xfs_inode.c:2944:9: note: uninitialized use occurs here
    2944 |         return error;
         |                ^~~~~
   fs/xfs/xfs_inode.c:2939:2: note: remove the 'if' if its condition is always true
    2939 |         if (xfs_inode_unlinked_incomplete(ip))
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    2940 |                 error = xfs_inode_reload_unlinked_bucket(tp, ip);
   fs/xfs/xfs_inode.c:2935:13: note: initialize the variable 'error' to silence this warning
    2935 |         int                     error;
         |                                      ^
         |                                       = 0
   1 warning generated.


vim +2939 fs/xfs/xfs_inode.c

83771c50e42b92 Darrick J. Wong   2023-09-11  2928  
83771c50e42b92 Darrick J. Wong   2023-09-11  2929  /* Decide if this inode is missing its unlinked list and reload it. */
83771c50e42b92 Darrick J. Wong   2023-09-11  2930  int
83771c50e42b92 Darrick J. Wong   2023-09-11  2931  xfs_inode_reload_unlinked(
83771c50e42b92 Darrick J. Wong   2023-09-11  2932  	struct xfs_inode	*ip)
83771c50e42b92 Darrick J. Wong   2023-09-11  2933  {
83771c50e42b92 Darrick J. Wong   2023-09-11  2934  	struct xfs_trans	*tp;
83771c50e42b92 Darrick J. Wong   2023-09-11  2935  	int			error;
83771c50e42b92 Darrick J. Wong   2023-09-11  2936  
9823a1576f363c Christoph Hellwig 2025-07-15  2937  	tp = xfs_trans_alloc_empty(ip->i_mount);
83771c50e42b92 Darrick J. Wong   2023-09-11  2938  	xfs_ilock(ip, XFS_ILOCK_SHARED);
83771c50e42b92 Darrick J. Wong   2023-09-11 @2939  	if (xfs_inode_unlinked_incomplete(ip))
83771c50e42b92 Darrick J. Wong   2023-09-11  2940  		error = xfs_inode_reload_unlinked_bucket(tp, ip);
83771c50e42b92 Darrick J. Wong   2023-09-11  2941  	xfs_iunlock(ip, XFS_ILOCK_SHARED);
83771c50e42b92 Darrick J. Wong   2023-09-11  2942  	xfs_trans_cancel(tp);
83771c50e42b92 Darrick J. Wong   2023-09-11  2943  
83771c50e42b92 Darrick J. Wong   2023-09-11  2944  	return error;
83771c50e42b92 Darrick J. Wong   2023-09-11  2945  }
d9041681dd2f53 Darrick J. Wong   2023-12-15  2946  

:::::: The code at line 2939 was first introduced by commit
:::::: 83771c50e42b92de6740a63e152c96c052d37736 xfs: reload entire unlinked bucket lists

:::::: TO: Darrick J. Wong <djwong@kernel.org>
:::::: CC: Darrick J. Wong <djwong@kernel.org>

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