Re: [PATCH] fs/locks: print full locks information

[Al Viro]

On Sat, Feb 20, 2021 at 01:32:50AM -0500, Luo Longjun wrote:
>  
> @@ -2844,7 +2845,13 @@ static void lock_get_status(struct seq_file *f, struct file_lock *fl,
>  	if (fl->fl_file != NULL)
>  		inode = locks_inode(fl->fl_file);
>  
> -	seq_printf(f, "%lld:%s ", id, pfx);
> +	seq_printf(f, "%lld: ", id);
> +	for (i = 1; i < repeat; i++)
> +		seq_puts(f, " ");
> +
> +	if (repeat)
> +		seq_printf(f, "%s", pfx);

RTFCStandard(printf, %*s), please

> +static int __locks_show(struct seq_file *f, struct file_lock *fl, int level)
> +{
> +	struct locks_iterator *iter = f->private;
> +	struct file_lock *bfl;
> +
> +	lock_get_status(f, fl, iter->li_pos, "-> ", level);
> +
> +	list_for_each_entry(bfl, &fl->fl_blocked_requests, fl_blocked_member)
> +		__locks_show(f, bfl, level + 1);

Er...  What's the maximal depth, again?  Kernel stack is very much finite...