nfsd changes for 4.9

Please pull nfsd changes from:

git://linux-nfs.org/~bfields/linux.git tags/nfsd-4.9

for you to fetch changes up to 29ae7f9dc21a7dda41d78b27bbda7d427ece8ad4:

NFSD: Implement the COPY call (2016-10-07 14:54:25 -0400)

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Some RDMA work and some good bugfixes, and two new features that could benefit from user testing:

Anna Schumacker contributed a simple NFSv4.2 COPY implementation. COPY is already supported on the client side, so a call to copy_file_range() on a recent client should now result in a server-side copy that doesn't require all the data to make a round trip to the client and back.

Jeff Layton implemented callbacks to notify clients when contended locks become available, which should reduce latency on workloads with contended locks.

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Anna Schumaker (1):
NFSD: Implement the COPY call

Chuck Lever (5):
svcrdma: Tail iovec leaves an orphaned DMA mapping
svcrdma: Skip put_page() when send_reply() fails
rpcrdma: RDMA/CM private message data structure
svcrdma: Server-side support for rpcrdma_connect_private
svcrdma: support Remote Invalidation

J. Bruce Fields (4):
nfsd: randomize SETCLIENTID reply to help distinguish servers
nfsd4: setclientid_confirm with unmatched verifier should fail
nfsd: only WARN once on unmapped errors
nfsd: handle EUCLEAN

Jeff Layton (8):
nfsd: don't set a FL_LAYOUT lease for flexfiles layouts
nfsd: eliminate cb_minorversion field
nfsd: fix dprintk in nfsd4_encode_getdeviceinfo
nfsd: plumb in a CB_NOTIFY_LOCK operation
nfsd: have nfsd4_lock use blocking locks for v4.1+ locks
nfsd: add a LRU list for blocked locks
nfs: add a new NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK constant
nfsd: set the MAY_NOTIFY_LOCK flag in OPEN replies

NeilBrown (1):
exportfs: be careful to only return expected errors.

Vasily Averin (1):
NFSD: fix corruption in notifier registration

 fs/exportfs/expfs.c                        |  10 +-
 fs/nfsd/flexfilelayout.c                   |   1 +
 fs/nfsd/netns.h                            |   1 +
 fs/nfsd/nfs4callback.c                     |  64 +++++++-
 fs/nfsd/nfs4layouts.c                      |   6 +-
 fs/nfsd/nfs4proc.c                         |  90 +++++++++--
 fs/nfsd/nfs4state.c                        | 237 ++++++++++++++++++++++++++---
 fs/nfsd/nfs4xdr.c                          |  65 +++++++-
 fs/nfsd/nfsctl.c                           |   2 +
 fs/nfsd/nfsproc.c                          |   3 +-
 fs/nfsd/nfssvc.c                           |  18 ++-
 fs/nfsd/pnfs.h                             |   1 +
 fs/nfsd/state.h                            |  22 ++-
 fs/nfsd/vfs.c                              |  16 ++
 fs/nfsd/vfs.h                              |   2 +
 fs/nfsd/xdr4.h                             |  23 +++
 fs/nfsd/xdr4cb.h                           |   9 ++
 include/linux/exportfs.h                   |  13 +-
 include/linux/sunrpc/rpc_rdma.h            |  35 +++++
 include/linux/sunrpc/svc_rdma.h            |  10 ++
 include/uapi/linux/nfs4.h                  |   5 +-
 net/sunrpc/xprtrdma/svc_rdma_backchannel.c |   2 +-
 net/sunrpc/xprtrdma/svc_rdma_recvfrom.c    |   2 +-
 net/sunrpc/xprtrdma/svc_rdma_sendto.c      |  82 +++++++---
 net/sunrpc/xprtrdma/svc_rdma_transport.c   |  60 ++++++--
 25 files changed, 683 insertions(+), 96 deletions(-)