[PATCH v9 06/11] io_uring: introduce attributes for read/write and PI support

[Christoph Hellwig]

On Mon, Nov 18, 2024 at 05:45:02PM +0000, Pavel Begunkov wrote:
> Exactly, _fast path_. PI-only handling is very simple, I don't buy
> that "complicated". If we'd need to add more without an API expecting
> that, that'll mean a yet another forest of never ending checks in the
> fast path effecting all users.

Well, that's a good argument for a separate opcode for PI, or at least
for a 128-byte write, isn't it?  I have real hard time trying to find
a coherent line in your arguments.