[PATCH v3 0/2] Fix NFS/RDMA operation with Ryzen IOMMU

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Hi Anna-

Here's a fix for the bug reported yesterday morning, plus an
observability enhancement to help diagnose future similar bugs. The
fix needs to go into 5.6-rc and 5.5-stable as soon as you can. The
observability change can go in wherever you see fit. Thanks!


Changes since v2:
- Fix now passes the usual gamut of static checks
- Improve MR trace points even further
- Split out the trace point change; it does not need to be
  backported

Changes since v1:
- Ensure the correct nents value is passed to ib_map_mr_sg
- Record the mr_nents value in the MR trace points

---

Chuck Lever (2):
      xprtrdma: Fix DMA scatter-gather list mapping imbalance
      xprtrdma: Enhance MR-related trace points


 include/trace/events/rpcrdma.h |   56 +++++++++++++++++++++-------------------
 net/sunrpc/xprtrdma/frwr_ops.c |   15 ++++++-----
 2 files changed, 38 insertions(+), 33 deletions(-)

--
Chuck Lever




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