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

[Tycho Andersen]

On Thu, Apr 23, 2015 at 02:52:35PM +0300, Pavel Emelyanov wrote:
> On 04/23/2015 02:17 PM, Oleg Nesterov wrote:
> 
> > Now what? Obviously we can't just add
> > 
> > 	if (is_not_external_mount(m))
> > 		continue;
> 
> Why not? The is_not_external_mount() is
> 
> fsroot_mounted(m) || /* mount's root is visible from chroot */

But what if the mount's root is /? e.g with pstore in lxc, the
mountinfo from inside looks like:

110 104 0:23 / /sys/fs/pstore rw,nosuid,nodev,noexec,relatime master:11 - pstore pstore rw

which is a bind mount from the host's:

29 17 0:23 / /sys/fs/pstore rw,nosuid,nodev,noexec,relatime shared:11 - pstore pstore rw

Tycho

> isn't it?
> 
> -- Pavel
>