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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20210820120848.5692d25a@oasis.local.home>
Date:   Fri, 20 Aug 2021 12:08:48 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     David Hildenbrand <david@...hat.com>
Cc:     Jeff Layton <jlayton@...nel.org>, torvalds@...ux-foundation.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        ebiederm@...ssion.com, willy@...radead.org,
        linux-nfs@...r.kernel.org, viro@...iv.linux.org.uk,
        linux-doc@...r.kernel.org, v9fs-developer@...ts.sourceforge.net,
        linux-afs@...ts.infradead.org, cluster-devel@...hat.com,
        ocfs2-devel@....oracle.com, linux-mm@...ck.org,
        akpm@...ux-foundation.org, luto@...nel.org, bfields@...ldses.org,
        w@....eu, stable@...r.kernel.org
Subject: Re: [PATCH v2 1/2] fs: warn about impending deprecation of
 mandatory locks

On Fri, 20 Aug 2021 17:52:19 +0200
David Hildenbrand <david@...hat.com> 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