[PATCHv10 0/9] write hints with nvme fdp, scsi streams

[Christoph Hellwig]

On Thu, Dec 05, 2024 at 03:37:25PM -0500, Martin K. Petersen wrote:
> The problem with option 2 is that when you're doing copy between two
> different LUNs, then you suddenly have to maintain state in one kernel
> object about stuff relating to another kernel object. I think that is
> messy. Seems unnecessarily complex.

Generally agreeing with all you said, but do we actually have any
serious use case for cross-LU copies?  They just seem incredibly
complex any not all that useful.