Re: [RFC][PATCH][v2] Define/use siginfo_from_ancestor_ns()

[Sukadev Bhattiprolu]

| |    Actually, I think this is enough to solve most problems,
| |    the further changes can be discussed later. OK, the only
| |    "real" problem is SIGSTOP, afaics. This looks solveable.
| 
| Yes, SIGSTOP even from parent is ignored due to the SIGNAL_UNKILLABLE
| check in get_signal_to_deliver.

Actually with sig_task_ignored() patch, http://lkml.org/lkml/2008/11/18/251
SIGSTOP gets dropped early. To eventually allow SIGSTOP from ancestor ns,
we need to pass 'from_ancestor_ns' into sig_ignored() ?
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