From: Trond Myklebust <trondmy@gmail.com>
To: linux-nfs@vger.kernel.org
Subject: [PATCH 4/8] SUNRPC: Don't handle errors if the bind/connect succeeded
Date: Sat, 17 Aug 2019 17:22:13 -0400 [thread overview]
Message-ID: <20190817212217.22766-4-trond.myklebust@hammerspace.com> (raw)
In-Reply-To: <20190817212217.22766-3-trond.myklebust@hammerspace.com>
Don't handle errors in call_bind_status()/call_connect_status()
if it turns out that a previous call caused it to succeed.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: stable@vger.kernel.org # v5.1+
---
net/sunrpc/clnt.c | 26 ++++++++++++++++----------
1 file changed, 16 insertions(+), 10 deletions(-)
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index d8679b6027e9..92c1c4e02855 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1970,6 +1970,7 @@ call_bind(struct rpc_task *task)
static void
call_bind_status(struct rpc_task *task)
{
+ struct rpc_xprt *xprt = task->tk_rqstp->rq_xprt;
int status = -EIO;
if (rpc_task_transmitted(task)) {
@@ -1977,14 +1978,13 @@ call_bind_status(struct rpc_task *task)
return;
}
- if (task->tk_status >= 0) {
- dprint_status(task);
- task->tk_status = 0;
+ dprint_status(task);
+ trace_rpc_bind_status(task);
+ if (task->tk_status >= 0 || xprt_bound(xprt)) {
task->tk_action = call_connect;
return;
}
- trace_rpc_bind_status(task);
switch (task->tk_status) {
case -ENOMEM:
dprintk("RPC: %5u rpcbind out of memory\n", task->tk_pid);
@@ -2043,7 +2043,6 @@ call_bind_status(struct rpc_task *task)
rpc_call_rpcerror(task, status);
return;
-
retry_timeout:
task->tk_status = 0;
task->tk_action = call_bind;
@@ -2090,6 +2089,7 @@ call_connect(struct rpc_task *task)
static void
call_connect_status(struct rpc_task *task)
{
+ struct rpc_xprt *xprt = task->tk_rqstp->rq_xprt;
struct rpc_clnt *clnt = task->tk_client;
int status = task->tk_status;
@@ -2099,8 +2099,15 @@ call_connect_status(struct rpc_task *task)
}
dprint_status(task);
-
trace_rpc_connect_status(task);
+
+ if (task->tk_status == 0) {
+ clnt->cl_stats->netreconn++;
+ goto out_next;
+ }
+ if (xprt_connected(xprt))
+ goto out_next;
+
task->tk_status = 0;
switch (status) {
case -ECONNREFUSED:
@@ -2131,13 +2138,12 @@ call_connect_status(struct rpc_task *task)
case -EAGAIN:
case -ETIMEDOUT:
goto out_retry;
- case 0:
- clnt->cl_stats->netreconn++;
- task->tk_action = call_transmit;
- return;
}
rpc_call_rpcerror(task, status);
return;
+out_next:
+ task->tk_action = call_transmit;
+ return;
out_retry:
/* Check for timeouts before looping back to call_bind */
task->tk_action = call_bind;
--
2.21.0
next prev parent reply other threads:[~2019-08-17 21:24 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-17 21:22 [PATCH 1/8] NFS: Fix initialisation of I/O result struct in nfs_pgio_rpcsetup Trond Myklebust
2019-08-17 21:22 ` [PATCH 2/8] NFS: On fatal writeback errors, we need to call nfs_inode_remove_request() Trond Myklebust
2019-08-17 21:22 ` [PATCH 3/8] NFS: Fix spurious EIO read errors Trond Myklebust
2019-08-17 21:22 ` Trond Myklebust [this message]
2019-08-17 21:22 ` [PATCH 5/8] pNFS/flexfiles: Turn off soft RPC calls Trond Myklebust
2019-08-17 21:22 ` [PATCH 6/8] SUNRPC: Handle EADDRINUSE and ENOBUFS correctly Trond Myklebust
2019-08-17 21:22 ` [PATCH 7/8] Revert "NFSv4/flexfiles: Abort I/O early if the layout segment was invalidated" Trond Myklebust
2019-08-17 21:22 ` [PATCH 8/8] SUNRPC: Handle connection breakages correctly in call_status() Trond Myklebust
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