Re: [PATCH v2 1/2] fs: warn about impending deprecation of mandatory locks

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On Fri, 20 Aug 2021 17:52:19 +0200
David Hildenbrand <david@xxxxxxxxxx> wrote:

> > +static bool warned_mand;
> >   static inline bool may_mandlock(void)
> >   {
> > +	if (!warned_mand) {
> > +		warned_mand = true;
> > +		pr_warn("======================================================\n");
> > +		pr_warn("WARNING: the mand mount option is being deprecated and\n");
> > +		pr_warn("         will be removed in v5.15!\n");
> > +		pr_warn("======================================================\n");
> > +	}  
> 
> Is there a reason not to use pr_warn_once() ?

You would need a single call though, otherwise each pr_warn_once()
would have its own state that it warned once.

	const char warning[] =
		"======================================================\n"
		"WARNING: the mand mount option is being deprecated and\n"
		"         will be removed in v5.15!\n"
		"======================================================\n";

	pr_warn_once(warning);

-- Steve



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