[GIT PULL] first batch of nvme updates for 4.21

[hch@infradead.org (Christoph Hellwig)]

Hi Jens,

please pull this first batch of nvme updates for Linux 4.21.

Highlights:
 - target support for persistent discovery controllers (Jay Sternberg)
 - target optimizations to use non-blocking reads (Chaitanya Kulkarni)
 - host side support for the Enhanced Command Retry TP (Keith Busch)
 - host and target support for traffic based keep alive (Sagi Grimberg)
 - host and target support for disabling SQ based flow control (Sagi Grimberg)

Plus all kinds of optimizations and cleanups from the usual suspects.

The following changes since commit 43e497feb3987c868f87c7ca1470c5937689fe01:

  blk-mq: re-build queue map in case of kdump kernel (2018-12-06 22:52:59 -0700)

are available in the Git repository at:

  git://git.infradead.org/nvme.git nvme-4.21

for you to fetch changes up to 48fd68b3c5c66af6e0004787a54765a8d040989b:

  nvme: remove unused function nvme_ctrl_ready (2018-12-07 11:16:38 -0800)

----------------------------------------------------------------
Chaitanya Kulkarni (4):
      nvme: consolidate memset calls in the nvme_setup_cmd path
      nvmet: use IOCB_NOWAIT for file-ns buffered I/O
      nvmet: use unlikely for req status check
      nvmet: fix the structure member indentation

Christoph Hellwig (1):
      nvmet: mark nvmet_genctr static

Hannes Reinecke (1):
      nvme: add a numa_node field to struct nvme_ctrl

Israel Rukshin (3):
      nvme: Remove unused forward declaration
      nvmet-rdma: Add unlikely for response allocated check
      nvme: remove unused function nvme_ctrl_ready

James Smart (1):
      nvmet-fc: remove the IN_ISR deferred scheduling options

Jay Sternberg (7):
      nvmet: provide aen bit functions for multiple controller types
      nvmet: change aen mask functions to use bit numbers
      nvmet: allow Keep Alive for Discovery controller
      nvmet: make kato and AEN processing for use by other controllers
      nvmet: add defines for discovery change async events
      nvmet: add support to Discovery controllers for commands
      nvmet: enable Discovery Controller AENs

Keith Busch (1):
      nvme: implement Enhanced Command Retry

Sagi Grimberg (9):
      nvme: introduce ctrl attributes enumeration
      nvme: cache controller attributes
      nvme: support traffic based keep-alive
      nvmet: support for traffic based keep-alive
      nvmet: allow host connect even if no allowed subsystems are exported
      nvmet: support fabrics sq flow control
      nvmet: don't override treq upon modification.
      nvmet: expose support for fabrics SQ flow control disable in treq
      nvme: disable fabrics SQ flow control when asked by the user

 drivers/nvme/host/core.c          |  70 ++++++++++++++++++--
 drivers/nvme/host/fabrics.c       |  13 +++-
 drivers/nvme/host/fabrics.h       |   2 +
 drivers/nvme/host/fc.c            |   5 +-
 drivers/nvme/host/multipath.c     |   4 +-
 drivers/nvme/host/nvme.h          |  13 ++--
 drivers/nvme/host/rdma.c          |   5 +-
 drivers/nvme/target/admin-cmd.c   |  76 ++++++++++++----------
 drivers/nvme/target/configfs.c    |  42 ++++++++----
 drivers/nvme/target/core.c        | 118 +++++++++++++---------------------
 drivers/nvme/target/discovery.c   | 129 +++++++++++++++++++++++++++++++++++--
 drivers/nvme/target/fabrics-cmd.c |   6 ++
 drivers/nvme/target/fc.c          |  66 +------------------
 drivers/nvme/target/io-cmd-file.c | 130 ++++++++++++++++++++++++--------------
 drivers/nvme/target/nvmet.h       |  53 +++++++++++++---
 drivers/nvme/target/rdma.c        |   2 +-
 include/linux/nvme-fc-driver.h    |  16 -----
 include/linux/nvme.h              |  51 +++++++++++++--
 18 files changed, 514 insertions(+), 287 deletions(-)