[CRIU] Sync TODO-s for mount.c work

[Oleg Nesterov]

Sorry, I was busy today. And didn't sleep ;) So I can't follow this
discussion today. Will try tomorrow.

But I am all confused...

On 04/23, Pavel Emelyanov wrote:
>
> Ah, sure. It should be NOT before master_is_external, like this
>
>    (fsroot_mounted(m) || root_is_visible(m)) && !master_is_external()
>
> Provided master_is_external() is false for private mounts, this should
> handle Oleg's case with mount --make-rprivate,
                                  ^^^^^^^^^^^^^
                                --make-rslave

How???

I mean, once again, that we need more changes than correct implementaion
of is_not_external().

In case of my "--make-rslave" example everything will be master_is_external,
and

> all mountpoints will be bind-mounted from host with MS_SLAVE flag.

this won't restore the mountpoint correctly?

OK, most probably I misenderstood you/Tycho. Will try to read this all
tomorrow.

Oleg.