[RFC2,0/3] Follow-up discussion of bug 198053

Message

Chuck Lever Jan. 31, 2020, 8:41 p.m. UTC

Hi Bruce-

These are a proof-of-concept, not for merge.

This set of patches addresses the NFS/RDMA bug reported here:

https://bugzilla.kernel.org/show_bug.cgi?id=198053

This approach does not cause any regression of support for NFSv4
COMPOUNDs with multiple READ operations over TCP. It is also far
less invasive than my first try.

Thoughts, opinions?


---

Chuck Lever (3):
      nfsd: Fix NFSv4 READ on RDMA when using readv
      SUNRPC: Track current encode position in struct xdr_stream
      NFSD: Enable nfsd4_encode_readv() for NFS/RDMA


 fs/nfsd/nfs4proc.c                       |    1 +
 fs/nfsd/nfs4xdr.c                        |   16 +++++++---------
 include/linux/sunrpc/svc.h               |    3 +++
 include/linux/sunrpc/svc_rdma.h          |    6 +++++-
 include/linux/sunrpc/svc_xprt.h          |    2 ++
 include/linux/sunrpc/xdr.h               |    1 +
 net/sunrpc/svc.c                         |   14 ++++++++++++++
 net/sunrpc/svcsock.c                     |    7 +++++++
 net/sunrpc/xdr.c                         |    2 ++
 net/sunrpc/xprtrdma/svc_rdma_recvfrom.c  |    1 +
 net/sunrpc/xprtrdma/svc_rdma_rw.c        |   29 +++++++++++++++++++----------
 net/sunrpc/xprtrdma/svc_rdma_sendto.c    |   26 +++++++++++++++++++++++++-
 net/sunrpc/xprtrdma/svc_rdma_transport.c |    1 +
 13 files changed, 88 insertions(+), 21 deletions(-)

--
Chuck Lever