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Diffstat (limited to 'net/sunrpc/xprt.c')
-rw-r--r--net/sunrpc/xprt.c59
1 files changed, 30 insertions, 29 deletions
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index 42f09ade0044..65fe2e4e7cbf 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -43,6 +43,7 @@
#include <linux/interrupt.h>
#include <linux/workqueue.h>
#include <linux/net.h>
+#include <linux/ktime.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/metrics.h>
@@ -62,7 +63,6 @@
* Local functions
*/
static void xprt_request_init(struct rpc_task *, struct rpc_xprt *);
-static inline void do_xprt_reserve(struct rpc_task *);
static void xprt_connect_status(struct rpc_task *task);
static int __xprt_get_cong(struct rpc_xprt *, struct rpc_task *);
@@ -711,12 +711,16 @@ void xprt_connect(struct rpc_task *task)
if (task->tk_rqstp)
task->tk_rqstp->rq_bytes_sent = 0;
- task->tk_timeout = xprt->connect_timeout;
+ task->tk_timeout = task->tk_rqstp->rq_timeout;
rpc_sleep_on(&xprt->pending, task, xprt_connect_status);
+
+ if (test_bit(XPRT_CLOSING, &xprt->state))
+ return;
+ if (xprt_test_and_set_connecting(xprt))
+ return;
xprt->stat.connect_start = jiffies;
xprt->ops->connect(task);
}
- return;
}
static void xprt_connect_status(struct rpc_task *task)
@@ -771,25 +775,19 @@ struct rpc_rqst *xprt_lookup_rqst(struct rpc_xprt *xprt, __be32 xid)
}
EXPORT_SYMBOL_GPL(xprt_lookup_rqst);
-/**
- * xprt_update_rtt - update an RPC client's RTT state after receiving a reply
- * @task: RPC request that recently completed
- *
- */
-void xprt_update_rtt(struct rpc_task *task)
+static void xprt_update_rtt(struct rpc_task *task)
{
struct rpc_rqst *req = task->tk_rqstp;
struct rpc_rtt *rtt = task->tk_client->cl_rtt;
unsigned timer = task->tk_msg.rpc_proc->p_timer;
+ long m = usecs_to_jiffies(ktime_to_us(req->rq_rtt));
if (timer) {
if (req->rq_ntrans == 1)
- rpc_update_rtt(rtt, timer,
- (long)jiffies - req->rq_xtime);
+ rpc_update_rtt(rtt, timer, m);
rpc_set_timeo(rtt, timer, req->rq_ntrans - 1);
}
}
-EXPORT_SYMBOL_GPL(xprt_update_rtt);
/**
* xprt_complete_rqst - called when reply processing is complete
@@ -807,7 +805,9 @@ void xprt_complete_rqst(struct rpc_task *task, int copied)
task->tk_pid, ntohl(req->rq_xid), copied);
xprt->stat.recvs++;
- task->tk_rtt = (long)jiffies - req->rq_xtime;
+ req->rq_rtt = ktime_sub(ktime_get(), req->rq_xtime);
+ if (xprt->ops->timer != NULL)
+ xprt_update_rtt(task);
list_del_init(&req->rq_list);
req->rq_private_buf.len = copied;
@@ -906,7 +906,7 @@ void xprt_transmit(struct rpc_task *task)
return;
req->rq_connect_cookie = xprt->connect_cookie;
- req->rq_xtime = jiffies;
+ req->rq_xtime = ktime_get();
status = xprt->ops->send_request(task);
if (status != 0) {
task->tk_status = status;
@@ -935,7 +935,7 @@ void xprt_transmit(struct rpc_task *task)
spin_unlock_bh(&xprt->transport_lock);
}
-static inline void do_xprt_reserve(struct rpc_task *task)
+static void xprt_alloc_slot(struct rpc_task *task)
{
struct rpc_xprt *xprt = task->tk_xprt;
@@ -955,6 +955,16 @@ static inline void do_xprt_reserve(struct rpc_task *task)
rpc_sleep_on(&xprt->backlog, task, NULL);
}
+static void xprt_free_slot(struct rpc_xprt *xprt, struct rpc_rqst *req)
+{
+ memset(req, 0, sizeof(*req)); /* mark unused */
+
+ spin_lock(&xprt->reserve_lock);
+ list_add(&req->rq_list, &xprt->free);
+ rpc_wake_up_next(&xprt->backlog);
+ spin_unlock(&xprt->reserve_lock);
+}
+
/**
* xprt_reserve - allocate an RPC request slot
* @task: RPC task requesting a slot allocation
@@ -968,7 +978,7 @@ void xprt_reserve(struct rpc_task *task)
task->tk_status = -EIO;
spin_lock(&xprt->reserve_lock);
- do_xprt_reserve(task);
+ xprt_alloc_slot(task);
spin_unlock(&xprt->reserve_lock);
}
@@ -1006,14 +1016,10 @@ void xprt_release(struct rpc_task *task)
{
struct rpc_xprt *xprt;
struct rpc_rqst *req;
- int is_bc_request;
if (!(req = task->tk_rqstp))
return;
- /* Preallocated backchannel request? */
- is_bc_request = bc_prealloc(req);
-
xprt = req->rq_xprt;
rpc_count_iostats(task);
spin_lock_bh(&xprt->transport_lock);
@@ -1027,21 +1033,16 @@ void xprt_release(struct rpc_task *task)
mod_timer(&xprt->timer,
xprt->last_used + xprt->idle_timeout);
spin_unlock_bh(&xprt->transport_lock);
- if (!bc_prealloc(req))
+ if (req->rq_buffer)
xprt->ops->buf_free(req->rq_buffer);
task->tk_rqstp = NULL;
if (req->rq_release_snd_buf)
req->rq_release_snd_buf(req);
dprintk("RPC: %5u release request %p\n", task->tk_pid, req);
- if (likely(!is_bc_request)) {
- memset(req, 0, sizeof(*req)); /* mark unused */
-
- spin_lock(&xprt->reserve_lock);
- list_add(&req->rq_list, &xprt->free);
- rpc_wake_up_next(&xprt->backlog);
- spin_unlock(&xprt->reserve_lock);
- } else
+ if (likely(!bc_prealloc(req)))
+ xprt_free_slot(xprt, req);
+ else
xprt_free_bc_request(req);
}