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authorTrond Myklebust <Trond.Myklebust@netapp.com>2006-01-03 09:55:55 +0100
committerTrond Myklebust <Trond.Myklebust@netapp.com>2006-01-06 14:58:57 -0500
commit632e3bdc5006334cea894d078660b691685e1075 (patch)
treec18dbe84dfe679d19a581ea0c9bfb931daa08917 /net/sunrpc/xprt.c
parenteadb8c147154bff982f02accf31b847a1f142ace (diff)
SUNRPC: Ensure client closes the socket when server initiates a close
If the server decides to close the RPC socket, we currently don't actually respond until either another RPC call is scheduled, or until xprt_autoclose() gets called by the socket expiry timer (which may be up to 5 minutes later). This patch ensures that xprt_autoclose() is called much sooner if the server closes the socket. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'net/sunrpc/xprt.c')
-rw-r--r--net/sunrpc/xprt.c33
1 files changed, 16 insertions, 17 deletions
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index 069a6cbd49e..8bc0d5acf0d 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -119,6 +119,17 @@ out_sleep:
return 0;
}
+static void xprt_clear_locked(struct rpc_xprt *xprt)
+{
+ xprt->snd_task = NULL;
+ if (!test_bit(XPRT_CLOSE_WAIT, &xprt->state) || xprt->shutdown) {
+ smp_mb__before_clear_bit();
+ clear_bit(XPRT_LOCKED, &xprt->state);
+ smp_mb__after_clear_bit();
+ } else
+ schedule_work(&xprt->task_cleanup);
+}
+
/*
* xprt_reserve_xprt_cong - serialize write access to transports
* @task: task that is requesting access to the transport
@@ -145,9 +156,7 @@ int xprt_reserve_xprt_cong(struct rpc_task *task)
}
return 1;
}
- smp_mb__before_clear_bit();
- clear_bit(XPRT_LOCKED, &xprt->state);
- smp_mb__after_clear_bit();
+ xprt_clear_locked(xprt);
out_sleep:
dprintk("RPC: %4d failed to lock transport %p\n", task->tk_pid, xprt);
task->tk_timeout = 0;
@@ -193,9 +202,7 @@ static void __xprt_lock_write_next(struct rpc_xprt *xprt)
return;
out_unlock:
- smp_mb__before_clear_bit();
- clear_bit(XPRT_LOCKED, &xprt->state);
- smp_mb__after_clear_bit();
+ xprt_clear_locked(xprt);
}
static void __xprt_lock_write_next_cong(struct rpc_xprt *xprt)
@@ -222,9 +229,7 @@ static void __xprt_lock_write_next_cong(struct rpc_xprt *xprt)
return;
}
out_unlock:
- smp_mb__before_clear_bit();
- clear_bit(XPRT_LOCKED, &xprt->state);
- smp_mb__after_clear_bit();
+ xprt_clear_locked(xprt);
}
/**
@@ -237,10 +242,7 @@ out_unlock:
void xprt_release_xprt(struct rpc_xprt *xprt, struct rpc_task *task)
{
if (xprt->snd_task == task) {
- xprt->snd_task = NULL;
- smp_mb__before_clear_bit();
- clear_bit(XPRT_LOCKED, &xprt->state);
- smp_mb__after_clear_bit();
+ xprt_clear_locked(xprt);
__xprt_lock_write_next(xprt);
}
}
@@ -256,10 +258,7 @@ void xprt_release_xprt(struct rpc_xprt *xprt, struct rpc_task *task)
void xprt_release_xprt_cong(struct rpc_xprt *xprt, struct rpc_task *task)
{
if (xprt->snd_task == task) {
- xprt->snd_task = NULL;
- smp_mb__before_clear_bit();
- clear_bit(XPRT_LOCKED, &xprt->state);
- smp_mb__after_clear_bit();
+ xprt_clear_locked(xprt);
__xprt_lock_write_next_cong(xprt);
}
}