Merge tag 'nfs-rdma-3.16' of git://git.linux-nfs.org/projects/anna/nfs-rdma into...

Pull NFS client side changes for RDMA from Anna Schumaker

These patches are mostly cleanups and bugfixes for using RDMA as an
over-the-wire transport.

Highlights include:

- Remove obsolete memory registration modes.
- Removing BUG_ON()s to keep client's running.
- Fix deadlocks, NULL-pointer dereferences, and memory leaks.

* tag 'nfs-rdma-3.16' of git://git.linux-nfs.org/projects/anna/nfs-rdma: (24 commits)
  xprtrdma: Disconnect on registration failure
  xprtrdma: Remove BUG_ON() call sites
  xprtrdma: Avoid deadlock when credit window is reset
  SUNRPC: Move congestion window constants to header file
  xprtrdma: Reset connection timeout after successful reconnect
  xprtrdma: Use macros for reconnection timeout constants
  xprtrdma: Allocate missing pagelist
  xprtrdma: Remove Tavor MTU setting
  xprtrdma: Ensure ia->ri_id->qp is not NULL when reconnecting
  xprtrdma: Reduce the number of hardway buffer allocations
  xprtrdma: Limit work done by completion handler
  xprtrmda: Reduce calls to ib_poll_cq() in completion handlers
  xprtrmda: Reduce lock contention in completion handlers
  xprtrdma: Split the completion queue
  xprtrdma: Make rpcrdma_ep_destroy() return void
  xprtrdma: Simplify rpcrdma_deregister_external() synopsis
  xprtrdma: mount reports "Invalid mount option" if memreg mode not supported
  xprtrdma: Fall back to MTHCAFMR when FRMR is not supported
  xprtrdma: Remove REGISTER memory registration mode
  xprtrdma: Remove MEMWINDOWS registration modes
  ...