CLONE_PARENT was used to implement an older threading model. For
consistency with the CLONE_THREAD check in copy_pid_ns(), disable CLONE_PARENT with CLONE_NEWPID, at least until the required semantics of pid namespaces are clear. Signed-off-by: Sukadev Bhattiprolu <sukadev@us.ibm.com> Acked-by: Roland McGrath <roland@redhat.com> Acked-by: Serge Hallyn <serue@us.ibm.com> Cc: Oren Laadan <orenl@cs.columbia.edu> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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