Re: [PATCH v5] mm/oom_kill.c: futex: Close a race between do_exit and the oom_reaper

[Davidlohr Bueso]

On Mon, 21 Mar 2022, Nico Pache wrote:

> We could proceed with the V3 approach; however if we are able to find a complete
> solution that keeps both functionalities (Concurrent OOM Reaping & Robust Futex)
> working, I dont see why we wouldnt go for it.

Because semantically killing the process is, imo, the wrong thing to do. My
performance argument before however is bogus as the overhead of robust futexes
is pretty negligible within the lifetime of a lock. That said, the users still
have good(?) reasons for not wanting the lock holder to crash on them.

Thanks,
Davidlohr