[PATCH v7 06/10] io_uring/rw: add support to send metadata along with read/write

[Christoph Hellwig]

On Tue, Nov 05, 2024 at 06:34:29PM +0530, Anuj gupta wrote:
> The field is used only at io_uring level, and it helps there in using the
> SQE space flexibly.

How so?  There is absolutely no documentation for it in either the
code or commit log.  And if it is about sqe space management, meta_type
is about the most confusing possible name as well.  So someone please
needs to write down how it is supposed to work and come up with a name
that remotely makes sense for that.