Pull nfsd updates from Chuck Lever:
 "Notable features of this release include:

   - Pre-requisites for automatically determining the RPC server thread
     count

   - Clean-up and preparation for supporting LOCALIO, which will be
     merged via the NFS client tree

   - Enhancements and fixes to NFSv4.2 COPY offload

   - A new Python-based tool for generating kernel SunRPC XDR encoding
     and decoding functions, added as an aid for prototyping features in
     protocols based on the Linux kernel's SunRPC implementation

  As always I am grateful to the NFSD contributors, reviewers, testers,
  and bug reporters who participated during this cycle"

* tag 'nfsd-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (57 commits)
  xdrgen: Prevent reordering of encoder and decoder functions
  xdrgen: typedefs should use the built-in string and opaque functions
  xdrgen: Fix return code checking in built-in XDR decoders
  tools: Add xdrgen
  nfsd: fix delegation_blocked() to block correctly for at least 30 seconds
  nfsd: fix initial getattr on write delegation
  nfsd: untangle code in nfsd4_deleg_getattr_conflict()
  nfsd: enforce upper limit for namelen in __cld_pipe_inprogress_downcall()
  nfsd: return -EINVAL when namelen is 0
  NFSD: Wrap async copy operations with trace points
  NFSD: Clean up extra whitespace in trace_nfsd_copy_done
  NFSD: Record the callback stateid in copy tracepoints
  NFSD: Display copy stateids with conventional print formatting
  NFSD: Limit the number of concurrent async COPY operations
  NFSD: Async COPY result needs to return a write verifier
  nfsd: avoid races with wake_up_var()
  nfsd: use clear_and_wake_up_bit()
  sunrpc: xprtrdma: Use ERR_CAST() to return
  NFSD: Annotate struct pnfs_block_deviceaddr with __counted_by()
  nfsd: call cache_put if xdr_reserve_space returns NULL
  ...