um: fix futex implementation

The futex operations are both now wrong, neither have proper
atomic semantics, which are needed for SMP. Even if we don't
have SMP across threads of a process yet, multiple processes
can use futexes to synchronize.

Also remove the documentation that's duplicated (and wrong,
as this implementation never returns -EAGAIN).

Acked-By: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Link: https://patch.msgid.link/20260723113137.9f16fc4d0c83.I76c3b1c4de6591fa277db8da39e5a24a62361694@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

0 files changed, 0 insertions, 0 deletions