[GIT PULL] Please pull NFS server updates for 5.7

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Hi Linus,

I'm filling in for Bruce this time while he and his family settle
into a new house.


The following changes since commit fb33c6510d5595144d585aa194d377cf74d31911:

  Linux 5.6-rc6 (2020-03-15 15:01:23 -0700)

are available in the Git repository at:

  git://git.linux-nfs.org/projects/cel/cel-2.6.git tags/nfsd-5.7

for you to fetch changes up to 1a33d8a284b1e85e03b8c7b1ea8fb985fccd1d71:

  svcrdma: Fix leak of transport addresses (2020-03-27 12:25:06 -0400)

----------------------------------------------------------------
Highlights:

- Fix EXCHANGE_ID response when NFSD runs in a container
- A battery of new static trace points
- Socket transports now use bio_vec to send Replies
- NFS/RDMA now supports filesystems with no .splice_read method
- Favor memcpy() over DMA mapping for small RPC/RDMA Replies
- Add pre-requisites for supporting multiple Write chunks
- Numerous minor fixes and clean-ups

There are a few open issues that did not reach closure before I cut
the nfsd-5.7 tag:

- Vasily Averin has addressed a use-after-free in nfsd4_lock()
- Yihao Wu is investigating a race in cache_purge()
- Jan Psota reports a refcount underflow warning in nfsd41_cb_destroy()

These are long-standing bugs. I plan to send follow-up PRs for
v5.7-rc when these issues are resolved and their fixes thoroughly
tested.

----------------------------------------------------------------

Amol Grover (1):
      sunrpc: Pass lockdep expression to RCU lists

Christophe JAILLET (1):
      SUNRPC: Fix a potential buffer overflow in 'svc_print_xprts()'

Chuck Lever (21):
      nfsd: Fix NFSv4 READ on RDMA when using readv
      NFSD: Clean up nfsd4_encode_readv
      svcrdma: Fix double svc_rdma_send_ctxt_put() in an error path
      SUNRPC: Add xdr_pad_size() helper
      SUNRPC: Clean up: Replace dprintk and BUG_ON call sites in svcauth_gss.c
      svcrdma: Create a generic tracing class for displaying xdr_buf layout
      svcrdma: Remove svcrdma_cm_event() trace point
      svcrdma: Use struct xdr_stream to decode ingress transport headers
      svcrdma: De-duplicate code that locates Write and Reply chunks
      svcrdma: Update synopsis of svc_rdma_send_reply_chunk()
      svcrdma: Update synopsis of svc_rdma_map_reply_msg()
      svcrdma: Update synopsis of svc_rdma_send_reply_msg()
      svcrdma: Rename svcrdma_encode trace points in send routines
      SUNRPC: Add encoders for list item discriminators
      svcrdma: Refactor chunk list encoders
      svcrdma: Fix double sync of transport header buffer
      svcrdma: Avoid DMA mapping small RPC Replies
      SUNRPC: Refactor xs_sendpages()
      SUNRPC: Teach server to use xprt_sock_sendmsg for socket sends
      NFSD: Fix NFS server build errors
      svcrdma: Fix leak of transport addresses

Gustavo A. R. Silva (2):
      sunrpc: Replace zero-length array with flexible-array member
      svcrdma: Replace zero-length array with flexible-array member

J. Bruce Fields (3):
      nfsd4: kill warnings on testing stateids with mismatched clientids
      nfsd: fsnotify on rmdir under nfsd/clients/
      SUNRPC/cache: don't allow invalid entries to be flushed

Madhuparna Bhowmik (2):
      fs: nfsd: nfs4state.c: Use built-in RCU list checking
      fs: nfsd: fileache.c: Use built-in RCU list checking

Petr Vorel (1):
      nfsd: remove read permission bit for ctl sysctl

Scott Mayhew (1):
      nfsd: set the server_scope during service startup

Trond Myklebust (7):
      nfsd: Don't add locks to closed or closing open stateids
      nfsd: Add tracing to nfsd_set_fh_dentry()
      nfsd: Add tracepoints for exp_find_key() and exp_get_by_name()
      nfsd: Add tracepoints for update of the expkey and export cache entries
      nfsd: export upcalls must not return ESTALE when mountd is down
      SUNRPC/cache: Allow garbage collection of invalid cache entries
      sunrpc: Add tracing for cache events

 fs/nfs/dns_resolve.c                       |  11 +-
 fs/nfsd/Kconfig                            |   2 +-
 fs/nfsd/export.c                           |  45 +++++++--
 fs/nfsd/filecache.c                        |   2 +-
 fs/nfsd/netns.h                            |   2 +
 fs/nfsd/nfs4idmap.c                        |  14 +++
 fs/nfsd/nfs4state.c                        |  87 ++++++++--------
 fs/nfsd/nfs4xdr.c                          |  38 +++----
 fs/nfsd/nfsctl.c                           |   1 +
 fs/nfsd/nfsfh.c                            |  13 ++-
 fs/nfsd/nfssvc.c                           |   3 +
 fs/nfsd/trace.h                            | 122 ++++++++++++++++++++++
 include/linux/sunrpc/cache.h               |   9 +-
 include/linux/sunrpc/rpc_rdma.h            |   3 +-
 include/linux/sunrpc/svc.h                 |   5 +-
 include/linux/sunrpc/svc_rdma.h            |  24 +++--
 include/linux/sunrpc/svc_xprt.h            |   2 +
 include/linux/sunrpc/xdr.h                 |  67 ++++++++++---
 include/trace/events/rpcgss.h              |  59 ++++++++++-
 include/trace/events/rpcrdma.h             |  67 ++++++-------
 include/trace/events/sunrpc.h              |  76 ++++++++++++++
 net/sunrpc/auth_gss/auth_gss.c             |   2 +-
 net/sunrpc/auth_gss/svcauth_gss.c          |  60 +++++------
 net/sunrpc/cache.c                         | 128 ++++++++++++++----------
 net/sunrpc/clnt.c                          |   1 +
 net/sunrpc/socklib.c                       | 141 ++++++++++++++++++++++++++
 net/sunrpc/socklib.h                       |  15 +++
 net/sunrpc/sunrpc.h                        |   4 -
 net/sunrpc/svc.c                           |  20 +++-
 net/sunrpc/svc_xprt.c                      |  22 +++-
 net/sunrpc/svcauth_unix.c                  |  12 +++
 net/sunrpc/svcsock.c                       | 202 +++++++++++++------------------------
 net/sunrpc/xprt.c                          |   3 +-
 net/sunrpc/xprtrdma/rpc_rdma.c             |  36 +------
 net/sunrpc/xprtrdma/svc_rdma_backchannel.c |  17 ++--
 net/sunrpc/xprtrdma/svc_rdma_recvfrom.c    | 244 +++++++++++++++++++++++++++-----------------
 net/sunrpc/xprtrdma/svc_rdma_rw.c          |  57 ++++++-----
 net/sunrpc/xprtrdma/svc_rdma_sendto.c      | 512 +++++++++++++++++++++++++++++++++++++++++++++++++++++----------------------------------------
 net/sunrpc/xprtrdma/svc_rdma_transport.c   |   8 +-
 net/sunrpc/xprtsock.c                      | 188 ++++++----------------------------
 40 files changed, 1411 insertions(+), 913 deletions(-)
 create mode 100644 net/sunrpc/socklib.h

--
Chuck Lever







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