When we shift to using the transmit queue, then the task that holds the
write lock will not necessarily be the same as the one being transmitted.
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
include/linux/sunrpc/xprt.h | 2 +-
net/sunrpc/xprt.c | 2 +-
net/sunrpc/xprtrdma/svc_rdma_backchannel.c | 3 +--
net/sunrpc/xprtrdma/transport.c | 5 ++--
net/sunrpc/xprtsock.c | 27 +++++++++++-----------
5 files changed, 18 insertions(+), 21 deletions(-)
diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h
index b8a7de161f67..8c2bb078f00c 100644
--- a/include/linux/sunrpc/xprt.h
+++ b/include/linux/sunrpc/xprt.h
@@ -140,7 +140,7 @@ struct rpc_xprt_ops {
void (*connect)(struct rpc_xprt *xprt, struct rpc_task *task);
int (*buf_alloc)(struct rpc_task *task);
void (*buf_free)(struct rpc_task *task);
- int (*send_request)(struct rpc_task *task);
+ int (*send_request)(struct rpc_rqst *req, struct rpc_task *task);
void (*set_retrans_timeout)(struct rpc_task *task);
void (*timer)(struct rpc_xprt *xprt, struct rpc_task *task);
void (*release_request)(struct rpc_task *task);
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index d418bd4db7ff..00b17cb49910 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -1190,7 +1190,7 @@ void xprt_transmit(struct rpc_task *task)
}
connect_cookie = xprt->connect_cookie;
- status = xprt->ops->send_request(task);
+ status = xprt->ops->send_request(req, task);
trace_xprt_transmit(xprt, req->rq_xid, status);
if (status != 0) {
task->tk_status = status;
diff --git a/net/sunrpc/xprtrdma/svc_rdma_backchannel.c b/net/sunrpc/xprtrdma/svc_rdma_backchannel.c
index 09b12b7568fe..d1618c70edb4 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_backchannel.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_backchannel.c
@@ -215,9 +215,8 @@ rpcrdma_bc_send_request(struct svcxprt_rdma *rdma, struct rpc_rqst *rqst)
* connection.
*/
static int
-xprt_rdma_bc_send_request(struct rpc_task *task)
+xprt_rdma_bc_send_request(struct rpc_rqst *rqst, struct rpc_task *task)
{
- struct rpc_rqst *rqst = task->tk_rqstp;
struct svc_xprt *sxprt = rqst->rq_xprt->bc_xprt;
struct svcxprt_rdma *rdma;
int ret;
diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c
index 143ce2579ba9..fa684bf4d090 100644
--- a/net/sunrpc/xprtrdma/transport.c
+++ b/net/sunrpc/xprtrdma/transport.c
@@ -706,9 +706,8 @@ xprt_rdma_free(struct rpc_task *task)
* sent. Do not try to send this message again.
*/
static int
-xprt_rdma_send_request(struct rpc_task *task)
+xprt_rdma_send_request(struct rpc_rqst *rqst, struct rpc_task *task)
{
- struct rpc_rqst *rqst = task->tk_rqstp;
struct rpc_xprt *xprt = rqst->rq_xprt;
struct rpcrdma_req *req = rpcr_to_rdmar(rqst);
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
@@ -741,7 +740,7 @@ xprt_rdma_send_request(struct rpc_task *task)
/* An RPC with no reply will throw off credit accounting,
* so drop the connection to reset the credit grant.
*/
- if (!rpc_reply_expected(task))
+ if (!rpc_reply_expected(rqst->rq_task))
goto drop_connection;
return 0;
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 8d6404259ff9..b8143eded4af 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -449,12 +449,12 @@ static void xs_nospace_callback(struct rpc_task *task)
/**
* xs_nospace - place task on wait queue if transmit was incomplete
+ * @req: pointer to RPC request
* @task: task to put to sleep
*
*/
-static int xs_nospace(struct rpc_task *task)
+static int xs_nospace(struct rpc_rqst *req, struct rpc_task *task)
{
- struct rpc_rqst *req = task->tk_rqstp;
struct rpc_xprt *xprt = req->rq_xprt;
struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt);
struct sock *sk = transport->inet;
@@ -513,6 +513,7 @@ static inline void xs_encode_stream_record_marker(struct xdr_buf *buf)
/**
* xs_local_send_request - write an RPC request to an AF_LOCAL socket
+ * @req: pointer to RPC request
* @task: RPC task that manages the state of an RPC request
*
* Return values:
@@ -522,9 +523,8 @@ static inline void xs_encode_stream_record_marker(struct xdr_buf *buf)
* ENOTCONN: Caller needs to invoke connect logic then call again
* other: Some other error occured, the request was not sent
*/
-static int xs_local_send_request(struct rpc_task *task)
+static int xs_local_send_request(struct rpc_rqst *req, struct rpc_task *task)
{
- struct rpc_rqst *req = task->tk_rqstp;
struct rpc_xprt *xprt = req->rq_xprt;
struct sock_xprt *transport =
container_of(xprt, struct sock_xprt, xprt);
@@ -569,7 +569,7 @@ static int xs_local_send_request(struct rpc_task *task)
case -ENOBUFS:
break;
case -EAGAIN:
- status = xs_nospace(task);
+ status = xs_nospace(req, task);
break;
default:
dprintk("RPC: sendmsg returned unrecognized error %d\n",
@@ -585,6 +585,7 @@ static int xs_local_send_request(struct rpc_task *task)
/**
* xs_udp_send_request - write an RPC request to a UDP socket
+ * @req: pointer to RPC request
* @task: address of RPC task that manages the state of an RPC request
*
* Return values:
@@ -594,9 +595,8 @@ static int xs_local_send_request(struct rpc_task *task)
* ENOTCONN: Caller needs to invoke connect logic then call again
* other: Some other error occurred, the request was not sent
*/
-static int xs_udp_send_request(struct rpc_task *task)
+static int xs_udp_send_request(struct rpc_rqst *req, struct rpc_task *task)
{
- struct rpc_rqst *req = task->tk_rqstp;
struct rpc_xprt *xprt = req->rq_xprt;
struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt);
struct xdr_buf *xdr = &req->rq_snd_buf;
@@ -638,7 +638,7 @@ static int xs_udp_send_request(struct rpc_task *task)
/* Should we call xs_close() here? */
break;
case -EAGAIN:
- status = xs_nospace(task);
+ status = xs_nospace(req, task);
break;
case -ENETUNREACH:
case -ENOBUFS:
@@ -658,6 +658,7 @@ static int xs_udp_send_request(struct rpc_task *task)
/**
* xs_tcp_send_request - write an RPC request to a TCP socket
+ * @req: pointer to RPC request
* @task: address of RPC task that manages the state of an RPC request
*
* Return values:
@@ -670,9 +671,8 @@ static int xs_udp_send_request(struct rpc_task *task)
* XXX: In the case of soft timeouts, should we eventually give up
* if sendmsg is not able to make progress?
*/
-static int xs_tcp_send_request(struct rpc_task *task)
+static int xs_tcp_send_request(struct rpc_rqst *req, struct rpc_task *task)
{
- struct rpc_rqst *req = task->tk_rqstp;
struct rpc_xprt *xprt = req->rq_xprt;
struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt);
struct xdr_buf *xdr = &req->rq_snd_buf;
@@ -697,7 +697,7 @@ static int xs_tcp_send_request(struct rpc_task *task)
* completes while the socket holds a reference to the pages,
* then we may end up resending corrupted data.
*/
- if (task->tk_flags & RPC_TASK_SENT)
+ if (req->rq_task->tk_flags & RPC_TASK_SENT)
zerocopy = false;
if (test_bit(XPRT_SOCK_UPD_TIMEOUT, &transport->sock_state))
@@ -761,7 +761,7 @@ static int xs_tcp_send_request(struct rpc_task *task)
/* Should we call xs_close() here? */
break;
case -EAGAIN:
- status = xs_nospace(task);
+ status = xs_nospace(req, task);
break;
case -ECONNRESET:
case -ECONNREFUSED:
@@ -2706,9 +2706,8 @@ static int bc_sendto(struct rpc_rqst *req)
/*
* The send routine. Borrows from svc_send
*/
-static int bc_send_request(struct rpc_task *task)
+static int bc_send_request(struct rpc_rqst *req, struct rpc_task *task)
{
- struct rpc_rqst *req = task->tk_rqstp;
struct svc_xprt *xprt;
int len;
--
2.17.1
