Robert Jennings wrote:
> @@ -1613,6 +1624,26 @@ static struct scsi_host_template driver_
> };
>
> /**
> + * ibmvscsi_get_desired_dma - Calculate IO entitlement needed by the driver
> + *
> + * @vdev: struct vio_dev for the device whose entitlement is to be returned
> + *
> + * Return value:
> + * Number of bytes of IO data the driver will need to perform well.
> + */
> +static unsigned long ibmvscsi_get_desired_dma(struct vio_dev *vdev)
> +{
> + /* iu_storage data allocated in initialize_event_pool */
> + unsigned long io_entitlement = max_requests * sizeof(union viosrp_iu);
Since you are removing the use of "entitlement" in the function description,
you should probably remove it everywhere in this patch.
> +
> + /* add io space for sg data */
> + io_entitlement += (IBMVSCSI_MAX_SECTORS_DEFAULT *
> + IBMVSCSI_CMDS_PER_LUN_DEFAULT);
> +
> + return IOMMU_PAGE_ALIGN(io_entitlement);
I really think this function should just return the number of bytes and
let the caller round it up to any boundary requirements it might have.
-Brian
--
Brian King
Linux on Power Virtualization
IBM Linux Technology Center
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