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    SubjectRe: [PATCH 1/2] oom: don't ignore rss in nascent mm
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    > I wonder if it makes sense to move ->cred_guard_mutex from task_struct
    > to signal_struct and thus make multiple-threads-inside-exec impossible.
    > Only one thread can win anyway.

    That probably makes sense. Note that cred_guard_mutex is also overloaded
    for ptrace_attach, so this would add some more serialization of attaches to
    threads in the same group. But as long as actual attachment serializes on
    tasklist_lock anyway, it doesn't make a material difference. (Even without
    that, it would presumably be the same debugger attaching serially to
    threads in the same group, so it wouldn't degrade anything in practice.)


    Thanks,
    Roland


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