[v2,0/8] xprtrdma Receive Queue fixes

Message

Chuck Lever III April 2, 2021, 3:30 p.m. UTC

I found a number of crashers and other problems in and around the
xprtrdma logic for managing the Receive Queue during connect and
disconnect events.

Changes since v1:
- Reworked 2/8 based on review comments
- Clarified code comments and patch descriptions
- Added Reviewed-by tags where appropriate

---

Chuck Lever (8):
      xprtrdma: Avoid Receive Queue wrapping
      xprtrdma: Do not refresh Receive Queue while it is draining
      xprtrdma: Put flushed Receives on free list instead of destroying them
      xprtrdma: Improve locking around rpcrdma_rep destruction
      xprtrdma: Improve commentary around rpcrdma_reps_unmap()
      xprtrdma: Improve locking around rpcrdma_rep creation
      xprtrdma: Fix cwnd update ordering
      xprtrdma: Delete rpcrdma_recv_buffer_put()


 net/sunrpc/xprtrdma/backchannel.c |  4 +-
 net/sunrpc/xprtrdma/rpc_rdma.c    |  7 ++-
 net/sunrpc/xprtrdma/verbs.c       | 93 ++++++++++++++++++++-----------
 net/sunrpc/xprtrdma/xprt_rdma.h   |  5 +-
 4 files changed, 71 insertions(+), 38 deletions(-)

--
Chuck Lever