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    SubjectRe: Introspecting userns relationships to other namespaces?
    On Thu, Jul 07, 2016 at 08:01:52AM -0700, James Bottomley wrote:
    > In theory, we could get nsfs to show this information as an option
    > (just add a show_options entry to the superblock ops), but the
    > problem is that although each namespace has a parent user_ns,
    > there's no way to get it without digging in the namespace specific
    > structure. Probably we should restructure to move it into
    > ns_common, then we could display it (and enforce all namespaces
    > having owning user_ns) but it would be a reasonably large (but
    > mechanical) change.

    It sounds like everyone is either positive or or neutral on this
    groundwork, even if we haven't decided if/how to expose the
    information to userspace. I'm happy to work up a patch while the rest
    of the discussion continues. I'm also happy to let someone else work
    up the patch, if anyone else is chomping at the bit ;).

    Cheers,
    Trevor

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