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    SubjectRe: [PATCH V3 2/8] Add a new zerocopy device flag
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    On Mon, 2011-05-02 at 13:42 +0300, Michael S. Tsirkin wrote:
    > This comment should specify what exactly is the promise the
    > device makes by setting this flag. Specifically, the
    > condition is that no skb fragments are used
    > after the uinfo callback has been called.
    >
    > The way it's implemented, it probably means the device
    > should not use any of skb_clone, expand head etc.

    Agree. Or maybe force a copy when device uses skb_clone, expand
    head ...?

    Thanks
    Shirley



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