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    SubjectRe: [patch -mmotm] oom: only oom kill exiting tasks with attached memory
    David Rientjes wrote:
    > When a task is chosen for oom kill and is found to be PF_EXITING,
    > __oom_kill_task() is called to elevate the task's timeslice and give it
    > access to memory reserves so that it may quickly exit.
    >
    > This privilege is unnecessary, however, if the task has already detached
    > its mm. Although its possible for the mm to become detached later since
    > task_lock() is not held, __oom_kill_task() will simply be a no-op in such
    > circumstances.
    >
    > Subsequently, it is no longer necessary to warn about killing mm-less
    > tasks since it is a no-op.
    >
    > Cc: Rik van Riel <riel@redhat.com>
    > Signed-off-by: David Rientjes <rientjes@google.com>

    Acked-by: Rik van Riel <riel@redhat.com>

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