[PATCH v4 00/16] NFS/RDMA client side for Linux 4.3

[Chuck Lever <chuck.lever@oracle.com>]

Several important client-side performance and scalability
improvements are made in this series, proposed for the 4.3
kernel, including:

- Increase maximum RPC/RDMA credits to 128
- Increase maximum NFS/RDMA r/wsize to one megabyte
- Prefer inline rather than reply chunk replies

And these fixes:

- Send NFSv4 WRITE compounds correctly
- Support RDMA_NOMSG calls
- Remove support for RDMA_MSGP calls
- Fix large NFS symlink operations
- Get inline threshold accounting right

Also available in the "nfs-rdma-for-4.3" topic branch of this git repo:

git://git.linux-nfs.org/projects/cel/cel-2.6.git

Or for browsing:

http://git.linux-nfs.org/?p=cel/cel-2.6.git;a=log;h=refs/heads/nfs-rdma-for-4.3


Changes since v3:
- Rebased on Linux v4.2-rc5
- Added v2 of Devesh's reboot crash fix
- Clarified description of NFSv4 WRITE fix


Changes since v2:
- Rebased on Linux v4.2-rc3
- Corrected RPCRDMA_MAX_IOVS macro
- Included patch to remove core ib_reg_phys_mr() API


Changes since v1:
- Rebased on Linux v4.2-rc2
- PHYSICAL registration, being insecure, must now be explicitly selected
- Further clean-ups were done because ib_reg_phys_mr() is gone
- Support for RDMA_MSGP type calls has been removed
- Some patch descriptions have been clarified

---

Chuck Lever (15):
      xprtrdma: Make xprt_setup_rdma() agnostic to family of server address
      xprtrdma: Raise maximum payload size to one megabyte
      xprtrdma: Increase default credit limit
      xprtrdma: Don't fall back to PHYSICAL memory registration
      xprtrdma: Remove last ib_reg_phys_mr() call site
      xprtrdma: Clean up rpcrdma_ia_open()
      xprtrdma: Remove logic that constructs RDMA_MSGP type calls
      xprtrdma: Account for RPC/RDMA header size when deciding to inline
      xprtrdma: Always provide a write list when sending NFS READ
      xprtrdma: Don't provide a reply chunk when expecting a short reply
      xprtrdma: Fix XDR tail buffer marshalling
      xprtrdma: Fix large NFS SYMLINK calls
      xprtrdma: Clean up xprt_rdma_print_stats()
      xprtrdma: Count RDMA_NOMSG type calls
      core: Remove the ib_reg_phys_mr() and ib_rereg_phys_mr() verbs

Devesh Sharma (1):
      xprtrdma: take HCA driver refcount at client


 drivers/infiniband/core/verbs.c    |   67 ----------
 fs/nfs/nfs3xdr.c                   |    1 
 fs/nfs/nfs4xdr.c                   |    4 -
 include/linux/sunrpc/xprtrdma.h    |    2 
 include/rdma/ib_verbs.h            |   46 -------
 net/sunrpc/xprtrdma/fmr_ops.c      |   19 +++
 net/sunrpc/xprtrdma/frwr_ops.c     |    5 +
 net/sunrpc/xprtrdma/physical_ops.c |   25 ++++
 net/sunrpc/xprtrdma/rpc_rdma.c     |  197 +++++++++++++++---------------
 net/sunrpc/xprtrdma/transport.c    |   77 +++++-------
 net/sunrpc/xprtrdma/verbs.c        |  238 +++++++++++++-----------------------
 net/sunrpc/xprtrdma/xprt_rdma.h    |   27 ++--
 12 files changed, 285 insertions(+), 423 deletions(-)

--
Chuck Lever