On Thu, Aug 19, 2010 at 11:49:01AM -0400, Martin K. Petersen wrote:
> + if (sdkp->tpu && desc_count && lba_count)
> + sdkp->unmap = 1;
> + else if (!sdkp->tpws) {
> + sd_printk(KERN_ERR, sdkp, "Thin provisioning is " \
> + "enabled but neither TPU, nor TPWS are " \
> + "set. Disabling discard!\n");
> + goto out;
> + }
> +
I don't think we can simply break all existing setups with support for
earlier SBC drafts. I think we should use the TPU and TPWS same bits
if present and else fall back to our current heuristics.
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