Messages in this thread | | | Date | Wed, 14 Feb 2024 09:00:24 +0100 | From | Christoph Hellwig <> | Subject | Re: [PATCH v3 14/15] nvme: Support atomic writes |
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On Tue, Feb 13, 2024 at 02:21:25PM +0000, John Garry wrote: >> Please also read through TP4098(a) and look at the MAM field. > > It's not public, AFAIK.
Oracle is a member, so you can take a look at it easily. If we need it for Linux I can also work with the NVMe Board to release it.
> And I don't think a feature which allows us to straddle boundaries is too > interesting really.
Without MAM=1 NVMe can't support atomic writes larger than AWUPF/NAWUPF, which is typically set to the indirection table size. You're leaving a lot of potential unused with that.
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