Here are patches to support server-side bi-directional RPC/RDMA operation (to enable NFSv4.1 on RPC/RDMA transports). Thanks to all who reviewed v1, v2, and v3. This version has some significant changes since the previous one. In preparation for Doug's final topic branch, Bruce, I've rebased these on Christoph's ib_device_attr branch. There were some merge conflicts which I've fixed and tested. These are ready for your review. Also available in the "nfsd-rdma-for-4.5" 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/nfsd-rdma-for-4.5 Changes since v3: - Rebased on Christoph's ib_device_attr branch - Backchannel patches have been squashed together - Memory allocation overhaul to prevent blocking allocation when sending backchannel calls Changes since v2: - Rebased on v4.4-rc4 - Backchannel code in new source file to address dprintk issues - svc_rdma_get_context() now uses a pre-allocated cache - Dropped svc_rdma_send clean up Changes since v1: - Rebased on v4.4-rc3 - Removed the use of CONFIG_SUNRPC_BACKCHANNEL - Fixed computation of forward and backward max_requests - Updated some comments and patch descriptions - pr_err and pr_info converted to dprintk - Simplified svc_rdma_get_context() - Dropped patch removing access_flags field - NFSv4.1 callbacks tested with for-4.5 client --- Chuck Lever (11): svcrdma: Do not send XDR roundup bytes for a write chunk svcrdma: Clean up rdma_create_xprt() svcrdma: Clean up process_context() svcrdma: Improve allocation of struct svc_rdma_op_ctxt svcrdma: Improve allocation of struct svc_rdma_req_map svcrdma: Remove unused req_map and ctxt kmem_caches svcrdma: Add gfp flags to svc_rdma_post_recv() svcrdma: Remove last two __GFP_NOFAIL call sites svcrdma: Make map_xdr non-static svcrdma: Define maximum number of backchannel requests svcrdma: Add class for RDMA backwards direction transport include/linux/sunrpc/svc_rdma.h | 37 ++- net/sunrpc/xprt.c | 1 net/sunrpc/xprtrdma/Makefile | 2 net/sunrpc/xprtrdma/svc_rdma.c | 41 --- net/sunrpc/xprtrdma/svc_rdma_backchannel.c | 371 ++++++++++++++++++++++++++++ net/sunrpc/xprtrdma/svc_rdma_recvfrom.c | 52 ++++ net/sunrpc/xprtrdma/svc_rdma_sendto.c | 34 ++- net/sunrpc/xprtrdma/svc_rdma_transport.c | 284 ++++++++++++++++----- net/sunrpc/xprtrdma/transport.c | 30 +- net/sunrpc/xprtrdma/xprt_rdma.h | 20 +- 10 files changed, 730 insertions(+), 142 deletions(-) create mode 100644 net/sunrpc/xprtrdma/svc_rdma_backchannel.c -- Signature -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
