Messages in this thread | | | From | Roland McGrath <> | Subject | Re: [PATCH 2/4] ptrace: remove the extra wake_up_process() from ptrace_detach() | Date | Mon, 17 Jan 2011 14:13:40 -0800 (PST) |
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Of course I agree that the current code is wrong here. But I'm still not at all clear on what practical compatibility problems it introduces. This change is OK if and only if we are really making the only area clean and well-defined in the same release cycle. It doesn't really matter that the old behavior was ill-defined and unreliable in absolute terms, because the practical userland experience of it in real-world cases is what userland has grown to expect. We can't break any such expectations until we have a clear answer about how to solve the problems correctly.
Thanks, Roland
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