Thanks for doing this!

The only issue is the types: we should set these consts to have the same types as the fields they'll be used to set, so for example IORING_FSYNC_DATASYNC should be a u32.

However, we should also use the libc types that we use in our definitions, that way there's no worry about a strange platform where u32 and libc::__u32 are not the same type. This also applies the op consts, which should be libc::__u8 instead of u8.

Agreed!

Thanks!