From: Ian Kent <raven@themaw.net>
To: Nick Piggin <npiggin@suse.de>
Cc: linux-fsdevel@vger.kernel.org, autofs@linux.kernel.org
Subject: Re: [rfc][patch] fs: dcache remove d_mounted
Date: Fri, 09 Oct 2009 16:07:24 +0800 [thread overview]
Message-ID: <4ACEEF3C.4030005@themaw.net> (raw)
In-Reply-To: <20091009074211.GD2983@wotan.suse.de>
Nick Piggin wrote:
> I guess you could have a flag in the vfsmount which you could then set
> to have lookup_mnt (and hence follow_mount etc) ignore it.
>
> Unsetting / decrementing d_mounted I guess works, but I would just
> be worried if other mounts can be attached to the dentry then you
> might ignore that other mount or even follow your autofs mount.i
The other thing worth mentioning is that these mounts are entirely
managed by the user space daemon, no-one else can mount within the
autofs fs (well almost), unless a privileged user space process
deliberately uses ioctls to change that.
Ian
prev parent reply other threads:[~2009-10-09 8:07 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-09 2:56 [rfc][patch] fs: dcache remove d_mounted Nick Piggin
2009-10-09 5:47 ` Ian Kent
2009-10-09 7:42 ` Nick Piggin
2009-10-09 8:00 ` Ian Kent
2009-10-09 8:07 ` Nick Piggin
2009-10-09 8:14 ` Ian Kent
2009-10-09 8:33 ` Nick Piggin
2009-10-09 8:56 ` Ian Kent
2009-10-09 9:59 ` Nick Piggin
2009-10-09 11:53 ` Ian Kent
2009-10-09 8:07 ` Ian Kent [this message]
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