Re: [PATCH] virtio_blk: corrent types for status handling

[Christoph Hellwig]

On Mon, Oct 25, 2021 at 11:24:57AM +0300, Max Gurtovoy wrote:
> Maybe we can compare the returned status to BLK_STS_OK. But I see we don't 
> do it also in NVMe subsystem so I guess we can assume BLK_STS_OK == 0 
> forever.

Jes,  BLK_STS_OK == 0 is an intentional allowed short cut.  It is not
just a block layer design, but part of how the sparse __bitwise__
annotations work.