Re: [RFC][PATCH 20/20] honor r/w changes at do_remount() time

[Al Viro]

On Fri, Jun 16, 2006 at 04:12:28PM -0700, Dave Hansen wrote:
> 
> Originally from: Herbert Poetzl <herbert@xxxxxxxxxxxx>
> 
> This is the core of the read-only bind mount patch set.
> 
> Note that this does _not_ add a "ro" option directly to
> the bind mount operation.  If you require such a mount,
> you must first do the bind, then follow it up with a
> 'mount -o remount,ro' operation.

Hrm...  So you want r/o status of vfsmount completely independent from
that of superblock?  I.e. allow writable vfsmount over r/o filesystem?
I realize that we have double checks, but...
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