Re: [PATCH 6/6] clone4: Introduce new CLONE_FD flag to get task exit notification via fd

From: Thiago Macieira
Date: Sat Mar 14 2015 - 14:38:44 EST

On Saturday 14 March 2015 15:32:35 Oleg Nesterov wrote:
> It is not clear to me what do_wait() should do with ->autoreap child, even
> ignoring ptrace.
> Just suppose that real_parent has a single "autoreap" child. Should
> wait(NULL) hanf then?

It should ignore the child that is set to autoreap. wait(NULL) should return -
ECHILD, indicating there are no children waiting to be reaped.

But now I realise that this might have implications for session management and
job control.

> If yes, who will wake the parent up?
> If no, I do not see the necessary changes in wait_cosnider_task().

Thiago Macieira - thiago.macieira (AT)
Software Architect - Intel Open Source Technology Center

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