[GIT PULL] Please pull NFS changes for Linux 5.3

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Hi Linus,

The following changes since commit bcc0e65f47def010d8d1c4cf09bdc698fe061b77:

  Merge tag 'mips_fixes_5.2_2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux (2019-07-06 10:32:12 -0700)

are available in the Git repository at:

  git://git.linux-nfs.org/projects/trondmy/linux-nfs.git tags/nfs-for-5.3-1

for you to fetch changes up to d5b9216fd5114be4ed98ca9c1ecc5f164cd8cf5e:

  pnfs/flexfiles: Add tracepoints for detecting pnfs fallback to MDS (2019-07-18 15:50:28 -0400)

----------------------------------------------------------------
NFS client updates for Linux 5.3

Highlights include:

Stable fixes:
- SUNRPC: Ensure bvecs are re-synced when we re-encode the RPC request
- Fix an Oops in ff_layout_track_ds_error due to a PTR_ERR() dereference
- Revert buggy NFS readdirplus optimisation
- NFSv4: Handle the special Linux file open access mode
- pnfs: Fix a problem where we gratuitously start doing I/O through the MDS

Features:
- Allow NFS client to set up multiple TCP connections to the server using
   a new 'nconnect=X' mount option. Queue length is used to balance load.
- Enhance statistics reporting to report on all transports when using
   multiple connections.
- Speed up SUNRPC by removing bh-safe spinlocks
- Add a mechanism to allow NFSv4 to request that containers set a
   unique per-host identifier for when the hostname is not set.
- Ensure NFSv4 updates the lease_time after a clientid update

Bugfixes and cleanup:
- Fix use-after-free in rpcrdma_post_recvs
- Fix a memory leak when nfs_match_client() is interrupted
- Fix buggy file access checking in NFSv4 open for execute
- disable unsupported client side deduplication
- Fix spurious client disconnections
- Fix occasional RDMA transport deadlock
- Various RDMA cleanups
- Various tracepoint fixes
- Fix the TCP callback channel to guarantee the server can actually send
   the number of callback requests that was negotiated at mount time.

----------------------------------------------------------------
Anna Schumaker (1):
      SUNRPC: Drop redundant CONFIG_ from CONFIG_SUNRPC_DISABLE_INSECURE_ENCTYPES

Benjamin Coddington (1):
      NFS: Cleanup if nfs_match_client is interrupted

Chuck Lever (19):
      xprtrdma: Fix a BUG when tracing is enabled with NFSv4.1 on RDMA
      xprtrdma: Fix use-after-free in rpcrdma_post_recvs
      xprtrdma: Replace use of xdr_stream_pos in rpcrdma_marshal_req
      xprtrdma: Fix occasional transport deadlock
      xprtrdma: Remove the RPCRDMA_REQ_F_PENDING flag
      xprtrdma: Remove fr_state
      xprtrdma: Add mechanism to place MRs back on the free list
      xprtrdma: Reduce context switching due to Local Invalidation
      xprtrdma: Wake RPCs directly in rpcrdma_wc_send path
      xprtrdma: Simplify rpcrdma_rep_create
      xprtrdma: Streamline rpcrdma_post_recvs
      xprtrdma: Refactor chunk encoding
      xprtrdma: Remove rpcrdma_req::rl_buffer
      xprtrdma: Modernize ops->connect
      NFS4: Add a trace event to record invalid CB sequence IDs
      NFS: Fix show_nfs_errors macros again
      NFS: Display symbolic status code names in trace log
      NFS: Update symbolic flags displayed by trace events
      NFS: Record task, client ID, and XID in xdr_status trace points

Darrick J. Wong (1):
      nfs: disable client side deduplication

Dave Wysochanski (5):
      SUNRPC: Move call to rpc_count_iostats before rpc_call_done
      SUNRPC: Use proper printk specifiers for unsigned long long
      SUNRPC: Count ops completing with tk_status < 0
      NFSv4: Add lease_time and lease_expired to 'nfs4:' line of mountstats
      SUNRPC: Fix possible autodisconnect during connect due to old last_used

Donald Buczek (4):
      nfs: Fix copy-and-paste error in debug message
      nfs4: Make nfs4_proc_get_lease_time available for nfs4.0
      nfs4: Rename nfs41_setup_state_renewal
      nfs4.0: Refetch lease_time after clientid update

Markus Elfring (2):
      NFS: Use seq_putc() in nfs_show_stats()
      NFS: Replace 16 seq_printf() calls by seq_puts()

Max Kellermann (1):
      Revert "NFS: readdirplus optimization by cache mechanism" (memleak)

NeilBrown (3):
      NFS: send state management on a single connection.
      SUNRPC: enhance rpc_clnt_show_stats() to report on all xprts.
      SUNRPC: add links for all client xprts to debugfs

Trond Myklebust (36):
      NFSv4: Handle open for execute correctly
      NFSv4: Handle the special Linux file open access mode
      SUNRPC: Replace the queue timer with a delayed work function
      SUNRPC: Replace direct task wakeups from softirq context
      SUNRPC: Remove the bh-safe lock requirement on xprt->transport_lock
      NFS: Create a root NFS directory in /sys/fs/nfs
      NFS: Cleanup - add nfs_clients_exit to mirror nfs_clients_init
      SUNRPC: Add basic load balancing to the transport switch
      SUNRPC: Remove the bh-safe lock requirement on the rpc_wait_queue->lock
      NFS: Add deferred cache invalidation for close-to-open consistency violations
      NFS: Add sysfs support for per-container identifier
      SUNRPC: Allow creation of RPC clients with multiple connections
      NFS: Add a mount option to specify number of TCP connections to use
      NFSv4: Allow multiple connections to NFSv4.x (x>0) servers
      pNFS: Allow multiple connections to the DS
      NFS: Display the "nconnect" mount option if it is set.
      NFS: Allow multiple connections to a NFSv2 or NFSv3 server
      Merge branch 'bh-remove'
      SUNRPC: Remove warning in debugfs.c when compiling with W=1
      Merge branch 'cache_consistency'
      Merge branch 'containers'
      Merge branch 'multipath_tcp'
      NFS: Clean up writeback code
      Merge tag 'nfs-rdma-for-5.3-1' of git://git.linux-nfs.org/projects/anna/linux-nfs
      SUNRPC: Fix transport accounting when caller specifies an rpc_xprt
      NFSv4: Validate the stateid before applying it to state recovery
      SUNRPC: Replace division by multiplication in calculation of queue length
      SUNRPC: Skip zero-refcount transports
      SUNRPC: Fix initialisation of struct rpc_xprt_switch
      SUNRPC: Fix up backchannel slot table accounting
      NFSv4: Don't use the zero stateid with layoutget
      pnfs/flexfiles: Fix PTR_ERR() dereferences in ff_layout_track_ds_error
      SUNRPC: Ensure the bvecs are reset when we re-encode the RPC request
      SUNRPC: Optimise transport balancing code
      pnfs: Fix a problem where we gratuitously start doing I/O through the MDS
      pnfs/flexfiles: Add tracepoints for detecting pnfs fallback to MDS

 fs/nfs/Makefile                            |   3 +-
 fs/nfs/callback_proc.c                     |  28 ++-
 fs/nfs/client.c                            |  24 ++-
 fs/nfs/dir.c                               |  94 +--------
 fs/nfs/flexfilelayout/flexfilelayout.c     |  26 +++
 fs/nfs/flexfilelayout/flexfilelayoutdev.c  |   2 +-
 fs/nfs/inode.c                             |  30 ++-
 fs/nfs/internal.h                          |   7 +-
 fs/nfs/netns.h                             |   3 +
 fs/nfs/nfs2xdr.c                           |   2 +-
 fs/nfs/nfs3client.c                        |   3 +
 fs/nfs/nfs3xdr.c                           |   2 +-
 fs/nfs/nfs4_fs.h                           |   4 +-
 fs/nfs/nfs4client.c                        |  14 +-
 fs/nfs/nfs4file.c                          |   8 +-
 fs/nfs/nfs4proc.c                          |  80 +++++--
 fs/nfs/nfs4state.c                         |  49 +++--
 fs/nfs/nfs4trace.c                         |   8 +
 fs/nfs/nfs4trace.h                         | 283 ++++++++++++++++++-------
 fs/nfs/nfs4xdr.c                           |  16 +-
 fs/nfs/nfstrace.h                          | 233 ++++++++++++++------
 fs/nfs/pagelist.c                          |   6 +-
 fs/nfs/pnfs.c                              |  20 +-
 fs/nfs/super.c                             |  57 +++--
 fs/nfs/sysfs.c                             | 187 +++++++++++++++++
 fs/nfs/sysfs.h                             |  25 +++
 fs/nfs/write.c                             |   7 +-
 include/linux/nfs4.h                       |   1 +
 include/linux/nfs_fs.h                     |   2 +
 include/linux/nfs_fs_sb.h                  |   1 +
 include/linux/sunrpc/bc_xprt.h             |   1 +
 include/linux/sunrpc/clnt.h                |   4 +
 include/linux/sunrpc/metrics.h             |   7 +-
 include/linux/sunrpc/sched.h               |   4 +-
 include/linux/sunrpc/xprt.h                |  10 +-
 include/linux/sunrpc/xprtmultipath.h       |   2 +
 include/linux/sunrpc/xprtsock.h            |   5 +
 include/trace/events/rpcrdma.h             |  90 ++++++--
 net/sunrpc/Kconfig                         |   2 +-
 net/sunrpc/backchannel_rqst.c              |  40 ++--
 net/sunrpc/clnt.c                          |  95 ++++++++-
 net/sunrpc/debugfs.c                       |  48 +++--
 net/sunrpc/sched.c                         |  81 ++++---
 net/sunrpc/stats.c                         |  23 +-
 net/sunrpc/svc.c                           |   2 +-
 net/sunrpc/xprt.c                          | 101 +++++----
 net/sunrpc/xprtmultipath.c                 |  89 ++++++--
 net/sunrpc/xprtrdma/backchannel.c          |   7 +
 net/sunrpc/xprtrdma/frwr_ops.c             | 327 +++++++++++++++++++----------
 net/sunrpc/xprtrdma/rpc_rdma.c             | 152 ++++++--------
 net/sunrpc/xprtrdma/svc_rdma_backchannel.c |   4 +-
 net/sunrpc/xprtrdma/svc_rdma_transport.c   |   8 +-
 net/sunrpc/xprtrdma/transport.c            |  84 ++++++--
 net/sunrpc/xprtrdma/verbs.c                | 115 +++++-----
 net/sunrpc/xprtrdma/xprt_rdma.h            |  45 ++--
 net/sunrpc/xprtsock.c                      | 126 +++++++----
 56 files changed, 1832 insertions(+), 865 deletions(-)
 create mode 100644 fs/nfs/sysfs.c
 create mode 100644 fs/nfs/sysfs.h
-- 
Trond Myklebust
Linux NFS client maintainer, Hammerspace
trond.myklebust@xxxxxxxxxxxxxxx






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