Hi Peter and Waiman, On Thu, Jun 11, 2020 at 12:09:59PM -0400, Waiman Long wrote: > On 6/11/20 10:22 AM, Peter Zijlstra wrote: > > On Thu, Jun 11, 2020 at 09:51:29AM -0400, Waiman Long wrote: > > > > > There was an old lockdep patch that I think may address the issue, but was > > > not merged at the time. I will need to dig it out and see if it can be > > > adapted to work in the current kernel. It may take some time. > > Boqun was working on that; I can't remember what happened, but ISTR it > > was shaping up nice. > > > Yes, I am talking about Boqun's patch. However, I think he had moved to > another company and so may not be able to actively work on that again. > I think you are talking about the rescursive read deadlock detection patchset: https://lore.kernel.org/lkml/20180411135110.9217-1-boqun.feng@xxxxxxxxx/ Let me have a good and send a new version based on today's master of tip tree. Regards, Boqun > Cheers, > Longman >