From mboxrd@z Thu Jan  1 00:00:00 1970
From: Al Viro <viro@ZenIV.linux.org.uk>
Subject: Re: [patch 3/7] vfs: mountinfo: add mount ID
Date: Thu, 27 Mar 2008 22:13:58 +0000
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To: Miklos Szeredi <miklos@szeredi.hu>
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On Thu, Mar 27, 2008 at 01:06:22PM +0100, Miklos Szeredi wrote:
> From: Miklos Szeredi <mszeredi@suse.cz>
> 
> Add a unique ID to each vfsmount using the IDR infrastructure.  The
> identifiers are reused after the vfsmount is freed.

Er...  That would need shifting allocation to attach_recursive_mnt()
and copy_tree()...

Anyway, nevermind that for now; I'll pick the variant with spinlock
from the previous patchset.