There were a set of issues brought up in 6.5 by the introduction of the "laundromat" (which cleans up directory leases). After discussion and testing with Paulo, Bernd Feige and others, we request that the following set also be included to address these problems. They are all in mainline (added in 6.6) and the patches (from mainline since they apply cleanly) are also attached.
238b351d0935 ("smb3: allow controlling length of time directory entries are cached with dir leases") 6a50d71d0fff ("smb3: allow controlling maximum number of cached directories") 2da338ff752a ("smb3: do not start laundromat thread when dir leases disabled") 3b8bb3171571 ("smb: client: do not start laundromat thread on nohandlecache") e95f3f744650 ("smb: client: make laundromat a delayed worker") 81ba10959970 ("smb: client: prevent new fids from being removed by laundromat")