Re: [PATCH RFC v3 12/12] hw/block/nvme: add support for the format nvm command

[Klaus Jensen <its@irrelevant.dk>]

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On Feb 16 15:16, Keith Busch wrote:
> On Mon, Feb 15, 2021 at 12:02:40AM +0100, Klaus Jensen wrote:
> > From: Minwoo Im <minwoo.im@samsung.com>
> > 
> > Format NVM admin command can make a namespace or namespaces to be
> > with different LBA size and metadata size with protection information
> > types.
> > 
> > This patch introduces Format NVM command with LBA format, Metadata, and
> > Protection Information for the device. The secure erase operation things
> > are yet to be added.
> > 
> > The parameter checks inside of this patch has been referred from
> > Keith's old branch.
> 
> Oh, and here's the format command now, so my previous comment on patch
> 11 doesn't matter.
> 
> > +struct nvme_aio_format_ctx {
> > +    NvmeRequest   *req;
> > +    NvmeNamespace *ns;
> > +
> > +    /* number of outstanding write zeroes for this namespace */
> > +    int *count;
> 
> Shouldn't this count be the NvmeRequest's opaque value?

That is already occupied by `num_formats` which tracks formats of
individual namespaces. `count` is for outstanding write zeroes on one
particular namespace.

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