Merge tag 'nvme-5.16-2021-10-21' of git://git.infradead.org/nvme into for-5.16/drivers

Pull NVMe updates from Christoph:

"nvme updates for Linux 5.16

 - fix a multipath partition scanning deadlock (Hannes Reinecke)
 - generate uevent once a multipath namespace is operational again
   (Hannes Reinecke)
 - support unique discovery controller NQNs (Hannes Reinecke)
 - fix use-after-free when a port is removed (Israel Rukshin)
 - clear shadow doorbell memory on resets (Keith Busch)
 - use struct_size (Len Baker)
 - add error handling support for add_disk (Luis Chamberlain)
 - limit the maximal queue size for RDMA controllers (Max Gurtovoy)
 - use a few more symbolic names (Max Gurtovoy)
 - fix error code in nvme_rdma_setup_ctrl (Max Gurtovoy)
 - add support for ->map_queues on FC (Saurav Kashyap)"

* tag 'nvme-5.16-2021-10-21' of git://git.infradead.org/nvme: (23 commits)
  nvmet: use struct_size over open coded arithmetic
  nvme: drop scan_lock and always kick requeue list when removing namespaces
  nvme-pci: clear shadow doorbell memory on resets
  nvme-rdma: fix error code in nvme_rdma_setup_ctrl
  nvme-multipath: add error handling support for add_disk()
  nvmet: use macro definitions for setting cmic value
  nvmet: use macro definition for setting nmic value
  nvme: display correct subsystem NQN
  nvme: Add connect option 'discovery'
  nvme: expose subsystem type in sysfs attribute 'subsystype'
  nvmet: set 'CNTRLTYPE' in the identify controller data
  nvmet: add nvmet_is_disc_subsys() helper
  nvme: add CNTRLTYPE definitions for 'identify controller'
  nvmet: make discovery NQN configurable
  nvmet-rdma: implement get_max_queue_size controller op
  nvmet: add get_max_queue_size op for controllers
  nvme-rdma: limit the maximal queue size for RDMA controllers
  nvmet-tcp: fix use-after-free when a port is removed
  nvmet-rdma: fix use-after-free when a port is removed
  nvmet: fix use-after-free when a port is removed
  ...