From: Chuck Lever <chuck.lever@oracle.com>
Date: Wed, 23 Oct 2019 10:01:52 -0400
Subject: xprtrdma: Wake tasks after connect worker fails
Patch-mainline: v5.5-rc1
Git-commit: 6cb28687fd1db3f94b35c2a7b37bf468f945244a
References: bsc#1154353
Pending tasks are currently never awoken when the connect worker
fails. The reason is that XPRT_CONNECTED is always clear after a
failure return of rpcrdma_ep_connect, thus the
xprt_test_and_clear_connected() check in xprt_rdma_connect_worker()
always fails.
- xprt_rdma_close always clears XPRT_CONNECTED.
- rpcrdma_ep_connect always clears XPRT_CONNECTED.
After reviewing the TCP connect worker, it appears that there's no
need for extra test_and_set paranoia in xprt_rdma_connect_worker.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
net/sunrpc/xprtrdma/transport.c | 15 ++++++---------
1 file changed, 6 insertions(+), 9 deletions(-)
--- a/net/sunrpc/xprtrdma/transport.c
+++ b/net/sunrpc/xprtrdma/transport.c
@@ -243,16 +243,13 @@ xprt_rdma_connect_worker(struct work_str
rc = rpcrdma_ep_connect(&r_xprt->rx_ep, &r_xprt->rx_ia);
xprt_clear_connecting(xprt);
if (r_xprt->rx_ep.rep_connected > 0) {
- if (!xprt_test_and_set_connected(xprt)) {
- xprt->stat.connect_count++;
- xprt->stat.connect_time += (long)jiffies -
- xprt->stat.connect_start;
- xprt_wake_pending_tasks(xprt, -EAGAIN);
- }
- } else {
- if (xprt_test_and_clear_connected(xprt))
- xprt_wake_pending_tasks(xprt, rc);
+ xprt->stat.connect_count++;
+ xprt->stat.connect_time += (long)jiffies -
+ xprt->stat.connect_start;
+ xprt_set_connected(xprt);
+ rc = -EAGAIN;
}
+ xprt_wake_pending_tasks(xprt, rc);
}
/**