Hello, On Mon, Jun 13, 2016 at 09:29:32PM +0000, Topi Miettinen wrote: > I used fork callback as I don't want to lower the watermark in all cases > where the charge can be lowered, so I'd update the watermark only when > the fork really happens.
I don't think that would make a noticeable difference. That's where we decide whether to grant fork or not after all and thus where the actual usage is. > Is there a better way to compare and set? I don't think atomic_cmpxchg() > does what's needed, cmpxchg loop should do what's necessary although I'm not sure how much being strictly correct matters here. Thanks. -- tejun
