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Subject: Re: [PATCH] btrfs: create example debugfs file only in debugging
 build
To: David Sterba <dsterba@suse.com>, linux-btrfs@vger.kernel.org
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From: Eric Sandeen <sandeen@redhat.com>
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Date: Thu, 1 Sep 2016 09:33:18 -0500
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On 9/1/16 7:44 AM, David Sterba wrote:
> Signed-off-by: David Sterba <dsterba@suse.com>

Reviewed-by: Eric Sandeen <sandeen@redhat.com>

> ---
>  fs/btrfs/sysfs.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
> index 804bd1c42e47..31f09564e170 100644
> --- a/fs/btrfs/sysfs.c
> +++ b/fs/btrfs/sysfs.c
> @@ -836,9 +836,18 @@ static int btrfs_init_debugfs(void)
>  	if (!btrfs_debugfs_root_dentry)
>  		return -ENOMEM;
>  
> +	/*
> +	 * Example code, how export data through debugfs.
> +	 *
> +	 * file:        /sys/kernel/debug/btrfs/test
> +	 * contents of: btrfs_debugfs_test
> +	 */
> +#ifdef CONFIG_BTRFS_DEBUG
>  	debugfs_create_u64("test", S_IRUGO | S_IWUSR, btrfs_debugfs_root_dentry,
>  			&btrfs_debugfs_test);
>  #endif
> +
> +#endif
>  	return 0;
>  }
>  
>