After folks tried out RPCRDMA_REGISTER support as I requested in
the cover letter of the last version of this series, existing
problems were discovered already in the upstream kernel, starting
with the problem addressed by Steve's LOCAL_WRITE patch from last
week.
Rather than address them, this series simply removes what is now an
obsolete memory registration mode. For some time, HCAs that do not
support FRMR fall back on ALLPHYSICAL mode, leaving REGISTER to
gather bit rot.
In addition I added three patches that implement improvements to
the new split completion handler, based on suggestions from Sagi
Grimberg.
Test and review the "nfs-rdma-client" branch:
git://git.linux-nfs.org/projects/cel/cel-2.6.git
Thanks!
---
Allen Andrews (1):
nfs-rdma: Fix for FMR leaks
Chuck Lever (15):
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: Add CONFIG setting that can disable ALLPHYSICAL
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
xprtrdma: Remove BOUNCEBUFFERS memory registration mode
xprtrdma: RPC/RDMA must invoke xprt_wake_pending_tasks() in process context
xprtrdma: Enable RDMA pad optimization by default
Steve Wise (1):
xprtrdma: mind the device's max fast register page list depth
include/linux/sunrpc/xprtrdma.h | 2
net/sunrpc/Kconfig | 14 +
net/sunrpc/xprtrdma/rpc_rdma.c | 63 +---
net/sunrpc/xprtrdma/transport.c | 34 --
net/sunrpc/xprtrdma/verbs.c | 694 +++++++++++++++------------------------
net/sunrpc/xprtrdma/xprt_rdma.h | 16 +
6 files changed, 316 insertions(+), 507 deletions(-)
--
Chuck Lever
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