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    SubjectRe: [PATCH 11/11] sysfs: user namespaces: fix bug with clone(CLONE_NEWUSER) with fairsched
    "Serge E. Hallyn" <serue@us.ibm.com> writes:

    > Except the sysfs mount holds no refcount on the userns. So as long as we
    > do the ida tagging as you suggested in your response to patch 6, there
    > should be no reference to the user_ns left in sysfs code.
    >
    > The extra reference in patch #9 is for a light ref on the network
    > namespace. I'm still not sure that needs to be there, since if the
    > network namespace goes away, it will properly unregister its sysfs
    > mounts. Eric, Benjamin, I really don't see any use for the hold_net()
    > from sysfs. What is it doing?

    Mostly just being a sanity check. We can remove that if it easier.

    Eric


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