On Wed, Jan 25, 2023 at 10:19:45AM +0900, Damien Le Moal wrote: > On 1/25/23 09:05, Bart Van Assche wrote: > > > which it is not sure that it will be integrated in other storage > > standards (NVMe, ...). Isn't the purpose of the block layer to provide > > an interface that is independent of the specifics of a single storage > > standard? This is why I'm in favor of letting the ATA core translate one > > of the existing I/O priority classes into a CDL instead of introducing a > > new I/O priority class (IOPRIO_CLASS_DL) in the block layer. > > We discussed CDL with Hannes in the context of NVMe over fabrics. Their > may be interesting extensions to consider for NVMe in that context (the > value for local PCI attached NVMe drive is more limited at best). I wouldn't necessarily rule out CDL for PCI attached in some future TP. NVMe does allow rotating media, and they'll want feature parity if CDL is considered useful in other protocols.
