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[PATCH] RPC: kick off socket connect operations faster

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Make the socket transport kick the event queue to start socket connects
 immediately.  This should improve responsiveness of applications that are
 sensitive to slow mount operations (like automounters).

 We are now also careful to cancel the connect worker before destroying
 the xprt.  This eliminates a race where xprt_destroy can finish before
 the connect worker is even allowed to run.

 Test-plan:
 Destructive testing (unplugging the network temporarily).  Connectathon
 with UDP and TCP.  Hard-code impossibly small connect timeout.

 Version: Fri, 29 Apr 2005 15:32:01 -0400

 Signed-off-by: Chuck Lever <cel@netapp.com>
 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever 2005-06-22 17:16:28 +00:00 committed by Trond Myklebust
parent 20e5ac828d
commit ae3884621b
1 changed files with 8 additions and 1 deletions
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9
net/sunrpc/xprt.c
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@ -569,8 +569,11 @@ void xprt_connect(struct rpc_task *task)
if (xprt->sock != NULL) if (xprt->sock != NULL)
schedule_delayed_work(&xprt->sock_connect, schedule_delayed_work(&xprt->sock_connect,
RPC_REESTABLISH_TIMEOUT); RPC_REESTABLISH_TIMEOUT);
else else {
schedule_work(&xprt->sock_connect); schedule_work(&xprt->sock_connect);
if (!RPC_IS_ASYNC(task))
flush_scheduled_work();
}
} }
return; return;
out_write: out_write:
@ -1685,6 +1688,10 @@ xprt_shutdown(struct rpc_xprt *xprt)
rpc_wake_up(&xprt->backlog); rpc_wake_up(&xprt->backlog);
wake_up(&xprt->cong_wait); wake_up(&xprt->cong_wait);
del_timer_sync(&xprt->timer); del_timer_sync(&xprt->timer);
/* synchronously wait for connect worker to finish */
cancel_delayed_work(&xprt->sock_connect);
flush_scheduled_work();
} }
/* /*