If the congestion window closes just as the transport disconnects,
a reconnect is never driven because:
1. The XPRT_CONG_WAIT flag prevents tasks from taking the write lock
2. There's no wake-up of the first task on the xprt->sending queue
To address this, clear the congestion wait flag as part of
completing a disconnect.
Fixes: 75891f502f5f ("SUNRPC: Support for congestion control ... ")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
}
EXPORT_SYMBOL_GPL(xprt_release_rqst_cong);
+static void xprt_clear_congestion_window_wait_locked(struct rpc_xprt *xprt)
+{
+ if (test_and_clear_bit(XPRT_CWND_WAIT, &xprt->state))
+ __xprt_lock_write_next_cong(xprt);
+}
+
/*
* Clear the congestion window wait flag and wake up the next
* entry on xprt->sending
spin_lock(&xprt->transport_lock);
xprt_clear_connected(xprt);
xprt_clear_write_space_locked(xprt);
+ xprt_clear_congestion_window_wait_locked(xprt);
xprt_wake_pending_tasks(xprt, -ENOTCONN);
spin_unlock(&xprt->transport_lock);
}