On Sep 11, 2020, at 1:12 PM, Sagi Grimberg <sagi@xxxxxxxxxxx> wrote: > > >>> Hi Jens, >>> >>> The 1st patch add .mq_quiesce_mutex for serializing quiesce/unquiesce, >>> and prepares for replacing srcu with percpu_ref. >>> >>> The 2nd patch replaces srcu with percpu_ref. >>> >>> The 3rd patch adds tagset quiesce interface. >>> >>> The 4th patch applies tagset quiesce interface for NVMe subsystem. >> What is this series against? > > It didn't apply cleanly to me too until I realized it is > on top of v4 of: "percpu_ref & block: reduce memory footprint of percpu_ref in fast path" Right, and that’s what has the leak issue you found. I’ll hold off on this one until that’s sorted.