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	Fri, 03 Apr 2026 04:46:55 +0000
Date: Fri, 3 Apr 2026 05:46:54 +0100
From: Al Viro <viro@zeniv.linux.org.uk>
To: Paulo Alcantara <pc@manguebit.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	linux-fsdevel@vger.kernel.org,
	Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
	Nikolay Borisov <nik.borisov@suse.com>,
	Max Kellermann <max.kellermann@ionos.com>,
	Eric Sandeen <sandeen@redhat.com>
Subject: Re: [RFC PATCH v2 0/4] getting rid of busy-wait in
 shrink_dcache_parent()
Message-ID: <20260403044654.GL3836593@ZenIV>
References: <20260122202025.GG3183987@ZenIV>
 <20260402180850.3729310-1-viro@zeniv.linux.org.uk>
 <48017c1409ddff65ab776a8ff3d25df7@manguebit.org>
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Sender: Al Viro <viro@ftp.linux.org.uk>

On Thu, Apr 02, 2026 at 05:28:58PM -0300, Paulo Alcantara wrote:
> Al Viro <viro@zeniv.linux.org.uk> writes:
> 
> > Note: in -next CIFS has grown a local copy of d_mark_tmpfile(), which would need
> >  the same modification of sanity checks the original gets in #3/4 here.  I wonder
> > if that cifs_d_mark_tmpfile() should be turned into to d_mark_tmpfile_name() and
> > lifted into fs/dcache.c...  Anyway, that's a separate story...
> 
> Yeah, I would love to have a helper like that and don't mess up with any
> ->d_name outside fs/dcache.c.  That's why I'd suggested it in [1].
> 
> I'll send a separate patch adding it as soon as I'm done with testing
> O_TMPFILE support in CIFS.
> 
> [1] https://lore.kernel.org/r/20260401011153.1757515-1-pc@manguebit.org

OK...  IMO we'd be better off with never-rebased branch adding the helper with
cifs branch pulling it and busy-wait branch based on top of the "add the helper"
one - no merge conflicts that way...