[PATCHv2 7/7] nvme: add support for enhanced metadata

[Martin K. Petersen]

Keith,

> NVM Express ratified TP 4069 defines new protection information
> formats.  Implement support for the CRC64 guard tags.

Looks fine.

Reviewed-by: Martin K. Petersen <martin.petersen at oracle.com>

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Martin K. Petersen	Oracle Linux Engineering