diff options
| author | Tom Talpey <talpey@netapp.com> | 2008-10-10 17:32:34 +0200 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2008-10-10 21:15:02 +0200 |
| commit | 08ca0dce1eafa419059ac4cad9ed522af7052526 (patch) | |
| tree | 76724d885bcfc89db261f119a6f38a8cbb1a6240 | |
| parent | RPC/RDMA: optionally emit useful transport info upon connect/disconnect. (diff) | |
| download | linux-08ca0dce1eafa419059ac4cad9ed522af7052526.tar.xz linux-08ca0dce1eafa419059ac4cad9ed522af7052526.zip | |
RPC/RDMA: correct the reconnect timer backoff
The RPC/RDMA code had a constant 5-second reconnect backoff, and
always performed it, even when re-establishing a connection to a
server after the RPC layer closed it due to being idle. Make it
an geometric backoff (up to 30 seconds), and don't delay idle
reconnect.
Signed-off-by: Tom Talpey <talpey@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| -rw-r--r-- | net/sunrpc/xprtrdma/transport.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c index c2da680273c5..9839c3d94145 100644 --- a/net/sunrpc/xprtrdma/transport.c +++ b/net/sunrpc/xprtrdma/transport.c @@ -463,6 +463,8 @@ xprt_rdma_close(struct rpc_xprt *xprt) struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt); dprintk("RPC: %s: closing\n", __func__); + if (r_xprt->rx_ep.rep_connected > 0) + xprt->reestablish_timeout = 0; xprt_disconnect_done(xprt); (void) rpcrdma_ep_disconnect(&r_xprt->rx_ep, &r_xprt->rx_ia); } @@ -490,6 +492,11 @@ xprt_rdma_connect(struct rpc_task *task) /* Reconnect */ schedule_delayed_work(&r_xprt->rdma_connect, xprt->reestablish_timeout); + xprt->reestablish_timeout <<= 1; + if (xprt->reestablish_timeout > (30 * HZ)) + xprt->reestablish_timeout = (30 * HZ); + else if (xprt->reestablish_timeout < (5 * HZ)) + xprt->reestablish_timeout = (5 * HZ); } else { schedule_delayed_work(&r_xprt->rdma_connect, 0); if (!RPC_IS_ASYNC(task)) |