[PATCHv3] nvme: only use power of two io boundaries

[Martin K. Petersen]

Keith,

> Don't provide any boundary hint if the controller's value can't be used
> and log a warning when first scanning a disk's unreported IO boundary.
> Since the chunk sector logic has grown, move it to a separate function.

This approach is fine with me.

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

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Martin K. Petersen	Oracle Linux Engineering