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    SubjectRe: suspend2 merge (was Re: [Suspend2-devel] Re: CFS and suspend2: hang in atomic copy)
    > Tell me, what does "suspend" do, and what does "freeze" (snapshot) do?
    > And name *one* thing that have in common.

    Both of them have to ensure you can make a consistent snapshot. Doing
    that means you've got to be able to define a single "point" at which the
    snapshot is made and is internally self-consistent. That in both cases
    tends to mean you've got to ensure nothing occurs which pees on the image
    while you are making that snapshot (such as outstanding O_DIRECT I/O to
    user pages).

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      Last update: 2007-04-26 00:59    [W:0.044 / U:3.908 seconds]
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