[CRIU] [PATCH] mount: rework perparation for pivot_root (v2)

[Andrew Vagin]

On Fri, Sep 12, 2014 at 05:26:02PM +0400, Pavel Emelyanov wrote:
> On 09/12/2014 05:17 PM, Andrey Vagin wrote:
> 
> I agree with
> 
> > We can't bind-mount the required root into itself instead of
> > resolving a parent mount.
> 
> but see this
> 
> > +		if (mount(opts.root, opts.root, NULL, MS_BIND, NULL)) {
> > +			pr_perror("Unable to bind-mount %s", opts.root);
> >  			return -1;
> >  		}
> 
> What is going on here? Can we, or cannot?

We can

> 
> Thanks,
> Pavel
>