linux-kernel - Re: [PATCH v5 04/10] ref_tracker: allow pr_ostream() to print directly to a seq

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: <20250430072355.73a79f55@kernel.org>
Date: Wed, 30 Apr 2025 07:23:55 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Jeff Layton <jlayton@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>, "David S. Miller"	
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Paolo Abeni	
 <pabeni@...hat.com>, Simon Horman <horms@...nel.org>, Maarten Lankhorst	
 <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>,
 Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>,
 Simona Vetter <simona@...ll.ch>, Jani Nikula	
 <jani.nikula@...ux.intel.com>, Joonas Lahtinen
 <joonas.lahtinen@...ux.intel.com>, Rodrigo Vivi <rodrigo.vivi@...el.com>,
 Tvrtko Ursulin <tursulin@...ulin.net>, Kuniyuki Iwashima	
 <kuniyu@...zon.com>, Qasim Ijaz <qasdev00@...il.com>, Nathan Chancellor	
 <nathan@...nel.org>, Andrew Lunn <andrew@...n.ch>,
 linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
 dri-devel@...ts.freedesktop.org, intel-gfx@...ts.freedesktop.org
Subject: Re: [PATCH v5 04/10] ref_tracker: allow pr_ostream() to print
 directly to a seq_file

On Tue, 29 Apr 2025 19:18:01 -0700 Jeff Layton wrote:
> On Tue, 2025-04-29 at 16:27 -0700, Jakub Kicinski wrote:
> > On Mon, 28 Apr 2025 11:26:27 -0700 Jeff Layton wrote:  
> > > Allow pr_ostream to also output directly to a seq_file without an
> > > intermediate buffer.
> > > 
> > > Reviewed-by: Andrew Lunn <andrew@...n.ch>
> > > Signed-off-by: Jeff Layton <jlayton@...nel.org>  
> > 
> > lib/ref_tracker.c:316:12: warning: unused function 'ref_tracker_dir_seq_print' [-Wunused-function]
> >   316 | static int ref_tracker_dir_seq_print(struct ref_tracker_dir *dir, struct seq_file *seq)
> >       |            ^~~~~~~~~~~~~~~~~~~~~~~~~  
> 
> The caller ends up being added in patch #6. I think the only thing I
> can do here to silence this is to squash this patch into that one.
> 
> I kind of don't like doing that here because I think the patches are
> conceptually separate, and it'll make for a rather large patch.
> 
> Let me know what you prefer.

Would it work to make the fops very dumbed down - return an error 
from open. And then implement the seqfile output as the next patch?