Re: [PATCH] btrfs: send: remove btrfs_debug() calls

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

Hi David,

kernel test robot noticed the following build warnings:

[auto build test WARNING on kdave/for-next]
[also build test WARNING on linus/master v6.15-rc4 next-20250429]
[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/David-Sterba/btrfs-send-remove-btrfs_debug-calls/20250429-165603
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git for-next
patch link:    https://lore.kernel.org/r/20250429085349.2169622-1-dsterba%40suse.com
patch subject: [PATCH] btrfs: send: remove btrfs_debug() calls
config: arc-randconfig-001-20250430 (https://download.01.org/0day-ci/archive/20250430/202504301726.KJfSXyNW-lkp@intel.com/config)
compiler: arc-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250430/202504301726.KJfSXyNW-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/202504301726.KJfSXyNW-lkp@intel.com/

All warnings (new ones prefixed by >>):

   fs/btrfs/send.c: In function 'send_rename':
>> fs/btrfs/send.c:819:31: warning: unused variable 'fs_info' [-Wunused-variable]
     819 |         struct btrfs_fs_info *fs_info = sctx->send_root->fs_info;
         |                               ^~~~~~~
   fs/btrfs/send.c: In function 'send_link':
   fs/btrfs/send.c:841:31: warning: unused variable 'fs_info' [-Wunused-variable]
     841 |         struct btrfs_fs_info *fs_info = sctx->send_root->fs_info;
         |                               ^~~~~~~
   fs/btrfs/send.c: In function 'send_unlink':
   fs/btrfs/send.c:862:31: warning: unused variable 'fs_info' [-Wunused-variable]
     862 |         struct btrfs_fs_info *fs_info = sctx->send_root->fs_info;
         |                               ^~~~~~~
   fs/btrfs/send.c: In function 'send_rmdir':
   fs/btrfs/send.c:882:31: warning: unused variable 'fs_info' [-Wunused-variable]
     882 |         struct btrfs_fs_info *fs_info = sctx->send_root->fs_info;
         |                               ^~~~~~~
   fs/btrfs/send.c: In function 'find_extent_clone':
>> fs/btrfs/send.c:1568:13: warning: variable 'logical' set but not used [-Wunused-but-set-variable]
    1568 |         u64 logical;
         |             ^~~~~~~
   fs/btrfs/send.c: In function 'send_truncate':
   fs/btrfs/send.c:2620:31: warning: unused variable 'fs_info' [-Wunused-variable]
    2620 |         struct btrfs_fs_info *fs_info = sctx->send_root->fs_info;
         |                               ^~~~~~~
   fs/btrfs/send.c: In function 'send_chmod':
   fs/btrfs/send.c:2645:31: warning: unused variable 'fs_info' [-Wunused-variable]
    2645 |         struct btrfs_fs_info *fs_info = sctx->send_root->fs_info;
         |                               ^~~~~~~
   fs/btrfs/send.c: In function 'send_fileattr':
   fs/btrfs/send.c:2670:31: warning: unused variable 'fs_info' [-Wunused-variable]
    2670 |         struct btrfs_fs_info *fs_info = sctx->send_root->fs_info;
         |                               ^~~~~~~
   fs/btrfs/send.c: In function 'send_chown':
   fs/btrfs/send.c:2698:31: warning: unused variable 'fs_info' [-Wunused-variable]
    2698 |         struct btrfs_fs_info *fs_info = sctx->send_root->fs_info;
         |                               ^~~~~~~
   fs/btrfs/send.c: In function 'send_utimes':
   fs/btrfs/send.c:2724:31: warning: unused variable 'fs_info' [-Wunused-variable]
    2724 |         struct btrfs_fs_info *fs_info = sctx->send_root->fs_info;
         |                               ^~~~~~~
   fs/btrfs/send.c: In function 'send_create_inode':
   fs/btrfs/send.c:2839:31: warning: unused variable 'fs_info' [-Wunused-variable]
    2839 |         struct btrfs_fs_info *fs_info = sctx->send_root->fs_info;
         |                               ^~~~~~~
   fs/btrfs/send.c: In function 'send_write':
   fs/btrfs/send.c:5308:31: warning: unused variable 'fs_info' [-Wunused-variable]
    5308 |         struct btrfs_fs_info *fs_info = sctx->send_root->fs_info;
         |                               ^~~~~~~


vim +/fs_info +819 fs/btrfs/send.c

31db9f7c23fbf7e Alexander Block 2012-07-25  812  
31db9f7c23fbf7e Alexander Block 2012-07-25  813  /*
31db9f7c23fbf7e Alexander Block 2012-07-25  814   * Sends a move instruction to user space
31db9f7c23fbf7e Alexander Block 2012-07-25  815   */
31db9f7c23fbf7e Alexander Block 2012-07-25  816  static int send_rename(struct send_ctx *sctx,
31db9f7c23fbf7e Alexander Block 2012-07-25  817  		     struct fs_path *from, struct fs_path *to)
31db9f7c23fbf7e Alexander Block 2012-07-25  818  {
04ab956ee69cdbe Jeff Mahoney    2016-09-20 @819  	struct btrfs_fs_info *fs_info = sctx->send_root->fs_info;
31db9f7c23fbf7e Alexander Block 2012-07-25  820  	int ret;
31db9f7c23fbf7e Alexander Block 2012-07-25  821  
31db9f7c23fbf7e Alexander Block 2012-07-25  822  	ret = begin_cmd(sctx, BTRFS_SEND_C_RENAME);
31db9f7c23fbf7e Alexander Block 2012-07-25  823  	if (ret < 0)
264515c7cb62661 Filipe Manana   2025-02-20  824  		return ret;
31db9f7c23fbf7e Alexander Block 2012-07-25  825  
31db9f7c23fbf7e Alexander Block 2012-07-25  826  	TLV_PUT_PATH(sctx, BTRFS_SEND_A_PATH, from);
31db9f7c23fbf7e Alexander Block 2012-07-25  827  	TLV_PUT_PATH(sctx, BTRFS_SEND_A_PATH_TO, to);
31db9f7c23fbf7e Alexander Block 2012-07-25  828  
31db9f7c23fbf7e Alexander Block 2012-07-25  829  	ret = send_cmd(sctx);
31db9f7c23fbf7e Alexander Block 2012-07-25  830  
31db9f7c23fbf7e Alexander Block 2012-07-25  831  tlv_put_failure:
31db9f7c23fbf7e Alexander Block 2012-07-25  832  	return ret;
31db9f7c23fbf7e Alexander Block 2012-07-25  833  }
31db9f7c23fbf7e Alexander Block 2012-07-25  834  

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