> +static void *seq_start(struct seq_file *m, loff_t *pos)
> +{
> + struct proc_fdinfo_extra *extra = m->private;
> + return *pos == 1 ? extra->fd_file : NULL;
> +}
> +
> +static void seq_stop(struct seq_file *m, void *v)
> +{
> +}
> +
> +static void *seq_next(struct seq_file *m, void *p, loff_t *pos)
> +{
> + struct proc_fdinfo_extra *extra = m->private;
> + return ++*pos == 1 ? extra->fd_file : NULL;
> +}
> +
<snip>
> +static const struct seq_operations eventfd_fdinfo_ops = {
> + .start = seq_start,
> + .next = seq_next,
> + .stop = seq_stop,
> + .show = seq_show,
I think, you can use the single_ part of the seq files engine.
> +};
Thanks,
Pavel
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