[PATCH v7 4/9] block: Add core atomic write support

[Christoph Hellwig]

On Mon, Jun 03, 2024 at 02:31:04PM +0200, Hannes Reinecke wrote:
> We currently use chunk_sectors for quite some different things, most 
> notably zones boundaries, NIOIB, raid stripes etc.
> So I don't have an issue adding another use-case for it.

So as zone as a device supports atomic/untorn writes you limit all
I/O including reads to the boundaries?  I can't see how that would
ever make sense.