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.
Tested some reset storms and target restarts during traffic with nvme-tcp. Seems that no apparent breakage. So: Tested-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
