Re: [PATCH v4 06/35] cleanup: Basic compatibility with context analysis

On Mon, Dec 15, 2025 at 04:53:18PM +0100, Marco Elver wrote:
> One observation from the rebase: Generally synchronization primitives
> do not change much and the annotations are relatively stable, but e.g.
> RCU & sched (latter is optional and depends on the sched-enablement
> patch) receive disproportionally more changes, and while new
> annotations required for v6.19-rc1 were trivial, it does require
> compiling with a Clang version that does produce the warnings to
> notice.

I have:

Debian clang version 22.0.0 (++20251023025710+3f47a7be1ae6-1~exp5)

I've not tried if that is new enough.

> While Clang 22-dev is being tested on CI, I doubt maintainers already
> use it, so it's possible we'll see some late warnings due to missing
> annotations when things hit -next. This might be an acceptable churn
> cost, if we think the outcome is worthwhile. Things should get better
> when Clang 22 is released properly, but until then things might be a
> little bumpy if there are large changes across the core
> synchronization primitives.

Yeah, we'll see how bad it gets, we can always disable it for
COMPILE_TEST or so for a while.