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

[Christoph Hellwig]

On Thu, Nov 14, 2024 at 04:15:12PM +0530, Anuj Gupta wrote:
> PI attribute is supported only for direct IO. Also, vectored read/write
> operations are not supported with PI currently.

Eww.  I know it's frustration for your if maintainers give contradicting
guidance, but this is really an awful interface.  Not only the pointless
indirection which make the interface hard to use, but limiting it to
not support vectored I/O makes it pretty useless.

I guess I need to do a little read-up on why Pavel wants this, but
from the block/fs perspective the previous interface made so much
more sense.