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Date: Wed, 14 Mar 2001 14:32:21 -0500 (EST)
From: Alexander Viro <viro@math.psu.edu>
To: Andreas Dilger <adilger@turbolinux.com>
cc: Linux kernel development list <linux-kernel@vger.kernel.org>,
        Linux FS development list <linux-fsdevel@vger.kernel.org>
Subject: Re: (struct dentry *)->vfsmnt;
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On Wed, 14 Mar 2001, Andreas Dilger wrote:

> Obviously, the whole vgimport stuff is going to be in userland.  The only
> part that needs to go in the kernel is storing the mountpoint in the
> filesystem superblock.  It is _not_ OK to just put it in /.last.mounted.
> Quite often a data/application VG is moved independent of the root filesystem.
> The info needs to stay with the filesystem itself.

Sorry - .last.mounted in the root of filesystem, indeed.

> > Since the reading side contains a bunch of heuristics
> > (obviously depending on the local naming policy for temp. mountpoints,
> > for one thing) you don't need anything special on the writing side...
> 
> The writing side can't be done in userland without basically making
> mount(8) know about the superblock layout of each and every filesystem:

That's a wonderful reason to put it _not_ into superblock... OK, what's
wrong with the variant above?

							Cheers,
								Al

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