AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

SUNRPC: Fix reconnection timeouts

Browse Source 
When the connect attempt fails and backs off, we should start the clock
at the last connection attempt, not time at which we queue up the
reconnect job.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust 2016-08-04 00:00:33 -04:00
parent 206b3bb574
commit 02910177ae
1 changed files with 20 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
net/sunrpc/xprtsock.c
View File

@ -2173,6 +2173,8 @@ static void xs_udp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock)
write_unlock_bh(&sk->sk_callback_lock);
}
xs_udp_do_set_buffer_size(xprt);
xprt->stat.connect_start = jiffies;
}
static void xs_udp_setup_socket(struct work_struct *work)
@ -2384,6 +2386,16 @@ static void xs_tcp_setup_socket(struct work_struct *work)
xprt_wake_pending_tasks(xprt, status);
}
static unsigned long xs_reconnect_delay(const struct rpc_xprt *xprt)
{
unsigned long start, now = jiffies;
start = xprt->stat.connect_start + xprt->reestablish_timeout;
if (time_after(start, now))
return start - now;
return 0;
}
/**
* xs_connect - connect a socket to a remote endpoint
* @xprt: pointer to transport structure
@ -2401,6 +2413,7 @@ static void xs_tcp_setup_socket(struct work_struct *work)
static void xs_connect(struct rpc_xprt *xprt, struct rpc_task *task)
{
struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt);
unsigned long delay = 0;
WARN_ON_ONCE(!xprt_lock_connect(xprt, task, transport));
@ -2412,19 +2425,19 @@ static void xs_connect(struct rpc_xprt *xprt, struct rpc_task *task)
/* Start by resetting any existing state */
xs_reset_transport(transport);
queue_delayed_work(xprtiod_workqueue,
&transport->connect_worker,
xprt->reestablish_timeout);
delay = xs_reconnect_delay(xprt);
xprt->reestablish_timeout <<= 1;
if (xprt->reestablish_timeout < XS_TCP_INIT_REEST_TO)
xprt->reestablish_timeout = XS_TCP_INIT_REEST_TO;
if (xprt->reestablish_timeout > XS_TCP_MAX_REEST_TO)
xprt->reestablish_timeout = XS_TCP_MAX_REEST_TO;
} else {
} else
dprintk("RPC: xs_connect scheduled xprt %p\n", xprt);
queue_delayed_work(xprtiod_workqueue,
&transport->connect_worker, 0);
}
queue_delayed_work(xprtiod_workqueue,
&transport->connect_worker,
delay);
}
/**