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    SubjectRe: [patch 2a/3] Expose Power Management Policy option to users
    James Bottomley wrote:
    > To take the model I understand: SAS; the links are managed at the phy
    > level, so the power policy should be set there and thus should probably
    > be a property of the phy object, which doesn't even exist in the SCSI
    > model, it only exists in the transport class. It strikes me that even
    > for ATA, the same thing is probably true.
    > Now, I can see that the power management models of all the transports
    > might share some similarities (particularly at this three stage granular
    > level); if so, it might make sense to export helpers from the mid-layer
    > for the transport classes to use for this.

    Agreed, in principle.


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