On Thu, 19 Sept 2024 at 00:44, Neeraj Upadhyay <Neeraj.Upadhyay@xxxxxxx> wrote: > > While we were working on this problem, this refcount scalability issue got > resolved recently with conditional ref acquisition [3] (however, there are new > developments in apparmor code which might bring back the refcount problem [4]). Honestly, the various security layers should be a whole lot more careful about their horrid performance issues, and I think that [4] you point at needs to just be headed off at the pass. No more "the security layer is so bad at performance that we have to introduce new ref mechanisms", please. Let's push back on bad security layer code instead. Linus