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From: Christian Brauner <brauner@kernel.org>
To: Ian Kent <raven@themaw.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>,
	 Kernel Mailing List <linux-kernel@vger.kernel.org>,
	autofs mailing list <autofs@vger.kernel.org>,
	 linux-fsdevel <linux-fsdevel@vger.kernel.org>
Subject: Re: [PATCH 2/2] autofs: dont trigger mount if it cant succeed
Date: Wed, 12 Nov 2025 12:01:01 +0100	[thread overview]
Message-ID: <20251112-kleckern-gebinde-d8dbe0d50e03@brauner> (raw)
In-Reply-To: <bd4fc8ce-ca3f-4e0f-86c0-f9aaa931a066@themaw.net>

On Tue, Nov 11, 2025 at 08:27:42PM +0800, Ian Kent wrote:
> On 11/11/25 18:55, Christian Brauner wrote:
> > On Tue, Nov 11, 2025 at 10:24:35AM +0000, Al Viro wrote:
> > > On Tue, Nov 11, 2025 at 11:19:59AM +0100, Christian Brauner wrote:
> > > 
> > > > > +	sbi->owner = current->nsproxy->mnt_ns;
> > > > ns_ref_get()
> > > > Can be called directly on the mount namespace.
> > > ... and would leak all mounts in the mount tree, unless I'm missing
> > > something subtle.
> > Right, I thought you actually wanted to pin it.
> > Anyway, you could take a passive reference but I think that's nonsense
> > as well. The following should do it:
> 
> Right, I'll need to think about this for a little while, I did think
> 
> of using an id for the comparison but I diverged down the wrong path so
> 
> this is a very welcome suggestion. There's still the handling of where
> 
> the daemon goes away (crash or SIGKILL, yes people deliberately do this
> 
> at times, think simulated disaster recovery) which I've missed in this

Can you describe the problem in more detail and I'm happy to help you
out here. I don't yet understand what the issue is.

  reply	other threads:[~2025-11-12 11:01 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-11  6:04 [PATCH 0/2] autofs: fairly minor fixes Ian Kent
2025-11-11  6:04 ` [PATCH 1/2] autofs: fix per-dentry timeout warning Ian Kent
2025-12-02 23:19   ` Ian Kent
2025-11-11  6:04 ` [PATCH 2/2] autofs: dont trigger mount if it cant succeed Ian Kent
2025-11-11  6:59   ` Al Viro
2025-11-11  8:25     ` Ian Kent
2025-11-11  9:04       ` Al Viro
2025-11-11 10:13         ` Ian Kent
2025-11-11 10:16           ` Al Viro
2025-11-11 10:19   ` Christian Brauner
2025-11-11 10:24     ` Al Viro
2025-11-11 10:55       ` Christian Brauner
2025-11-11 12:27         ` Ian Kent
2025-11-12 11:01           ` Christian Brauner [this message]
2025-11-13  0:14             ` Ian Kent
2025-11-13 13:19               ` Christian Brauner
2025-11-13 23:49                 ` Ian Kent
2025-11-14  0:07                   ` Ian Kent
2025-11-14 11:44                   ` Christian Brauner
2025-11-14 13:42                     ` Ian Kent

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