Re: [PATCH 8/8] libata: implement on-demand HPA unlocking

[Jeff Garzik]

On 05/15/2010 02:09 PM, Tejun Heo wrote:
> 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@xxxxxxxxxx>
> Suggested-by: Ben Hutchings<ben@xxxxxxxxxxxxxxx>

Acked-by: Jeff Garzik <jgarzik@xxxxxxxxxx>


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