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Debugging shows that the > backchannel is still stumbling when it has to queue a callback reply > on a busy transport. > > Note that every one of these timeouts causes a connection loss by > virtue of the xprt_conditional_disconnect() call in that arm of > call_cb_transmit_status(). > > I found that setting to_maxval is necessary to get the RPC timeout > logic to behave whenever to_exponential is not set. > > Fixes: 57331a59ac0d ("NFSv4.1: Use the nfs_client's rpc timeouts for backchannel") > Signed-off-by: Chuck Lever > --- > net/sunrpc/svc.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c > index 965a27806bfd..f4ddb2961042 100644 > --- a/net/sunrpc/svc.c > +++ b/net/sunrpc/svc.c > @@ -1643,6 +1643,7 @@ void svc_process_bc(struct rpc_rqst *req, struct svc_rqst *rqstp) > timeout.to_initval = req->rq_xprt->timeout->to_initval; > timeout.to_retries = req->rq_xprt->timeout->to_retries; > } > + timeout.to_maxval = timeout.to_initval; > memcpy(&req->rq_snd_buf, &rqstp->rq_res, sizeof(req->rq_snd_buf)); > task = rpc_run_bc_task(req, &timeout); > > -- > 2.45.1 > Hi - would love to see this in 6.10-rc. Is there a chance that could happen? -- Chuck Lever