On Tue, Jan 22, 2019 at 04:21:39PM +0100, Greg Kroah-Hartman wrote:
> When calling debugfs functions, there is no need to ever check the
> return value.  The function can work or not, but the code logic should
> never do something different based on this.
> 
> Cc: Thomas Gleixner <t...@linutronix.de>
> Cc: Ingo Molnar <mi...@redhat.com>
> Cc: Peter Zijlstra <pet...@infradead.org>
> Cc: Darren Hart <dvh...@infradead.org>
> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

As documented, and futexes can't be modules, so no need to check for the dentry.

Reviewed-by: Darren Hart (VMware) <dvh...@infradead.org>



> ---
>  kernel/futex.c | 8 ++------
>  1 file changed, 2 insertions(+), 6 deletions(-)
> 
> diff --git a/kernel/futex.c b/kernel/futex.c
> index be3bff2315ff..c2ed57b084a4 100644
> --- a/kernel/futex.c
> +++ b/kernel/futex.c
> @@ -321,12 +321,8 @@ static int __init fail_futex_debugfs(void)
>       if (IS_ERR(dir))
>               return PTR_ERR(dir);
>  
> -     if (!debugfs_create_bool("ignore-private", mode, dir,
> -                              &fail_futex.ignore_private)) {
> -             debugfs_remove_recursive(dir);
> -             return -ENOMEM;
> -     }
> -
> +     debugfs_create_bool("ignore-private", mode, dir,
> +                         &fail_futex.ignore_private);
>       return 0;
>  }
>  
> -- 
> 2.20.1
> 
> 

-- 
Darren Hart
VMware Open Source Technology Center

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