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    SubjectRe: Software suspend testing in 2.6.0-test1
    Pavel Machek <pavel@ucw.cz> wrote:
    >
    > > It would be much better to freeze kernel threads _after_ doing the big
    > > memory shrink.
    >
    > I wanted to avoid that: we do want user threads refrigerated at that
    > point so that we know noone is allocating memory as we are trying to
    > do memory shrink.

    freeze(threads which have task->mm)
    shrink_memory();
    freeze(threads which have !task->mm)

    That's pretty simple.

    > I'd like to avoid having refrigerator run in two phases....

    The whole thing can deadlock without kernel thread services.

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