diff options
Diffstat (limited to 'net/sunrpc/xprtrdma/rpc_rdma.c')
| -rw-r--r-- | net/sunrpc/xprtrdma/rpc_rdma.c | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/net/sunrpc/xprtrdma/rpc_rdma.c b/net/sunrpc/xprtrdma/rpc_rdma.c index 4bc0f4d94a01..e8adad33d0bb 100644 --- a/net/sunrpc/xprtrdma/rpc_rdma.c +++ b/net/sunrpc/xprtrdma/rpc_rdma.c @@ -365,7 +365,7 @@ rpcrdma_encode_read_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, seg = r_xprt->rx_ia.ri_ops->ro_map(r_xprt, seg, nsegs, false, &mr); if (IS_ERR(seg)) - return PTR_ERR(seg); + goto out_maperr; rpcrdma_mr_push(mr, &req->rl_registered); if (encode_read_segment(xdr, mr, pos) < 0) @@ -377,6 +377,11 @@ rpcrdma_encode_read_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, } while (nsegs); return 0; + +out_maperr: + if (PTR_ERR(seg) == -EAGAIN) + xprt_wait_for_buffer_space(rqst->rq_task, NULL); + return PTR_ERR(seg); } /* Register and XDR encode the Write list. Supports encoding a list @@ -423,7 +428,7 @@ rpcrdma_encode_write_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, seg = r_xprt->rx_ia.ri_ops->ro_map(r_xprt, seg, nsegs, true, &mr); if (IS_ERR(seg)) - return PTR_ERR(seg); + goto out_maperr; rpcrdma_mr_push(mr, &req->rl_registered); if (encode_rdma_segment(xdr, mr) < 0) @@ -440,6 +445,11 @@ rpcrdma_encode_write_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, *segcount = cpu_to_be32(nchunks); return 0; + +out_maperr: + if (PTR_ERR(seg) == -EAGAIN) + xprt_wait_for_buffer_space(rqst->rq_task, NULL); + return PTR_ERR(seg); } /* Register and XDR encode the Reply chunk. Supports encoding an array @@ -481,7 +491,7 @@ rpcrdma_encode_reply_chunk(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, seg = r_xprt->rx_ia.ri_ops->ro_map(r_xprt, seg, nsegs, true, &mr); if (IS_ERR(seg)) - return PTR_ERR(seg); + goto out_maperr; rpcrdma_mr_push(mr, &req->rl_registered); if (encode_rdma_segment(xdr, mr) < 0) @@ -498,6 +508,11 @@ rpcrdma_encode_reply_chunk(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, *segcount = cpu_to_be32(nchunks); return 0; + +out_maperr: + if (PTR_ERR(seg) == -EAGAIN) + xprt_wait_for_buffer_space(rqst->rq_task, NULL); + return PTR_ERR(seg); } /** @@ -724,8 +739,8 @@ rpcrdma_prepare_send_sges(struct rpcrdma_xprt *r_xprt, * Returns: * %0 if the RPC was sent successfully, * %-ENOTCONN if the connection was lost, - * %-EAGAIN if not enough pages are available for on-demand reply buffer, - * %-ENOBUFS if no MRs are available to register chunks, + * %-EAGAIN if the caller should call again with the same arguments, + * %-ENOBUFS if the caller should call again after a delay, * %-EMSGSIZE if the transport header is too small, * %-EIO if a permanent problem occurred while marshaling. */ @@ -868,10 +883,7 @@ rpcrdma_marshal_req(struct rpcrdma_xprt *r_xprt, struct rpc_rqst *rqst) return 0; out_err: - if (ret != -ENOBUFS) { - pr_err("rpcrdma: header marshaling failed (%d)\n", ret); - r_xprt->rx_stats.failed_marshal_count++; - } + r_xprt->rx_stats.failed_marshal_count++; return ret; } |