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    SubjectRe: [PATCH 8/8] libata: implement on-demand HPA unlocking
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    From: Tejun Heo <tj@kernel.org>
    Date: Sat, 15 May 2010 20:09:34 +0200

    > Implement ata_scsi_unlock_native_capacity() which will be called
    > through SCSI layer when block layer notices that partitions on a
    > device extend beyond the end of the device. It requests EH to unlock
    > HPA, waits for completion and returns the current device capacity.
    >
    > This allows libata to unlock HPA on demand instead of having to decide
    > whether to unlock upfront. Unlocking on demand is safer than
    > unlocking by upfront because some BIOSes write private data to the
    > area beyond HPA limit. This was suggested by Ben Hutchings.
    >
    > Signed-off-by: Tejun Heo <tj@kernel.org>
    > Suggested-by: Ben Hutchings <ben@decadent.org.uk>

    Acked-by: David S. Miller <davem@davemloft.net>


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