Re: [PATCH rdma-next] RDMA/mana_ib: Retain create CQ flags field name

Sat, Aug 08, 2026 at 01:13:56AM +0200, [email protected] wrote:
>On Mon, Aug 03, 2026 at 01:59:07PM +0200, Jiri Pirko wrote:
>
>> That is not doable in UAPI. Some userspace app, like rdma-core in
>> this case, might use it and rename breaks the compilation. Some other
>> app you don't know about may use it.
>
>Linus actualy had some comments on this once (which I will never be
>able to find I guess), but we broadly follow what he outlined. The
>userspace has copies of the kernel headers embedded in it. When the
>kernel headers change the user space updates it's copy and fixes any
>build breaks.
>
>So long as the build breaks are fixable, and don't change the ABI, it
>is fine.
>
>Many parts of the kernel work like this because userspace is not
>supposed to directly use the kernel headers themselves, they are
>supposed to be sanitized by glibc or some other helper library.
>
>There are a few places that don't work like this of course..

Yeah, me being mainly netdev-guy, that was never allowed there. Not sure
about now. But makes sense. Would be nice to have it explicitly
documented in kernel docs though.

Thanks!