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    SubjectRe: [PATCH 3/8] arm: Fix possible race on task->mm
    On Tue, 7 Feb 2012, Anton Vorontsov wrote:

    > Checking for task->mm is dangerous as ->mm might disappear (exit_mm()
    > assigns NULL under task_lock(), so tasklist lock is not enough).
    >
    > We can't use get_task_mm()/mmput() pair as mmput() might sleep,
    > so let's take the task lock while we care about its mm.
    >
    > Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>

    Acked-by: David Rientjes <rientjes@google.com>


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