Re: [PATCH 03/39] proc: introduce proc_create_seq_private

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On Thu, Apr 19, 2018 at 02:41:04PM +0200, Christoph Hellwig wrote:
> diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c
> index 2a3f874a21d5..ad35cddcf6af 100644
> --- a/drivers/s390/cio/blacklist.c
> +++ b/drivers/s390/cio/blacklist.c
> @@ -391,28 +391,15 @@ static const struct seq_operations cio_ignore_proc_seq_ops = {
>  	.show  = cio_ignore_proc_seq_show,
>  };
>  
> -static int
> -cio_ignore_proc_open(struct inode *inode, struct file *file)
> -{
> -	return seq_open_private(file, &cio_ignore_proc_seq_ops,
> -				sizeof(struct ccwdev_iter));
> -}
> -
> -static const struct file_operations cio_ignore_proc_fops = {
> -	.open    = cio_ignore_proc_open,
> -	.read    = seq_read,
> -	.llseek  = seq_lseek,
> -	.release = seq_release_private,
> -	.write   = cio_ignore_write,
                   ^^^^^^^^^^^^^^^^
The cio_ignore_write() function isn't used any more so compilers will
complain.

> -};
> -
>  static int
>  cio_ignore_proc_init (void)
>  {
>  	struct proc_dir_entry *entry;
>  
> -	entry = proc_create("cio_ignore", S_IFREG | S_IRUGO | S_IWUSR, NULL,
> -			    &cio_ignore_proc_fops);
> +	entry = proc_create_seq_private("cio_ignore",
> +			S_IFREG | S_IRUGO | S_IWUSR, NULL,
> +			&cio_ignore_proc_seq_ops, sizeof(struct ccwdev_iter),
> +			NULL);
>  	if (!entry)
>  		return -ENOENT;
>  	return 0;

regards,
dan carpenter

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