Re: [PATCH] tracefs/eventfs: Use dput to free the toplevel events directory

[kernel test robot]

Hi Steven,

kernel test robot noticed the following build warnings:

[auto build test WARNING on linus/master]
[also build test WARNING on next-20230905]
[cannot apply to v6.5]
[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/Steven-Rostedt/tracefs-eventfs-Use-dput-to-free-the-toplevel-events-directory/20230906-063414
base:   linus/master
patch link:    https://lore.kernel.org/r/20230905183332.628d7cc0%40gandalf.local.home
patch subject: [PATCH] tracefs/eventfs: Use dput to free the toplevel events directory
config: sparc-allyesconfig (https://download.01.org/0day-ci/archive/20230906/202309061055.V08YOtla-lkp@xxxxxxxxx/config)
compiler: sparc64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230906/202309061055.V08YOtla-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202309061055.V08YOtla-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

   fs/tracefs/event_inode.c: In function 'eventfs_remove_events_dir':
>> fs/tracefs/event_inode.c:804:31: warning: variable 'ei' set but not used [-Wunused-but-set-variable]
     804 |         struct eventfs_inode *ei;
         |                               ^~


vim +/ei +804 fs/tracefs/event_inode.c

5bdcd5f5331a276 Ajay Kaher 2023-07-28  794  
5bdcd5f5331a276 Ajay Kaher 2023-07-28  795  /**
5bdcd5f5331a276 Ajay Kaher 2023-07-28  796   * eventfs_remove_events_dir - remove eventfs dir or file from list
5bdcd5f5331a276 Ajay Kaher 2023-07-28  797   * @dentry: events's dentry to be removed.
5bdcd5f5331a276 Ajay Kaher 2023-07-28  798   *
5bdcd5f5331a276 Ajay Kaher 2023-07-28  799   * This function remove events main directory
5bdcd5f5331a276 Ajay Kaher 2023-07-28  800   */
5bdcd5f5331a276 Ajay Kaher 2023-07-28  801  void eventfs_remove_events_dir(struct dentry *dentry)
5bdcd5f5331a276 Ajay Kaher 2023-07-28  802  {
5bdcd5f5331a276 Ajay Kaher 2023-07-28  803  	struct tracefs_inode *ti;
5bdcd5f5331a276 Ajay Kaher 2023-07-28 @804  	struct eventfs_inode *ei;

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