Re: [RFC][PATCH 0/9] VFS: Introduce mount context

[Jeff Layton]

On Wed, 2017-05-03 at 17:50 +0100, David Howells wrote:
> Jeff Layton <jlayton@xxxxxxxxxxxxxxx> wrote:
> 
> > >  (*) Move the walk-from-root stuff that nfs has to generic code so that you
> > >      can do something akin to:
> > > 
> > > 	mount /dev/sda1:/foo/bar /mnt
> > > 
> > >      See nfs_follow_remote_path() and mount_subtree().  This is slightly
> > >      tricky in NFS as we have to prevent referral loops.
> > > 
> > 
> > ':' is a legitimate character in a path component. How will you
> > distinguish that case?
> 
> Fair point.  Could instead do something like:
> 
> 	mount /dev/sda1 /mnt -o subroot=/foo/bar
> 
> or just limit it to the fsopen interface.
> 
> 

Yeah, something like that would certainly work. I like the basic idea
though of combining a mount and bind mount for local fs'.
-- 
Jeff Layton <jlayton@xxxxxxxxxxxxxxx>