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eea553c21f
Today ceph opens tcp sockets from a delayed work callback. Delayed work happens from kernel threads which are always in the initial network namespace. Therefore fail early if someone attempts to mount a ceph filesystem from something other than the initial network namespace. Cc: Sage Weil <sage@inktank.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>