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SUNRPC: Don't reset the stream record info when the receive worker is running 

To ensure that the receive worker has exclusive access to the stream record
info, we must not reset the contents other than when holding the
transport->recv_mutex.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2019-02-20 14:56:20 -05:00
parent ded52fbe70
commit ae05355151
1 changed files with 9 additions and 3 deletions
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12
net/sunrpc/xprtsock.c
View File

@ -716,6 +716,11 @@ xs_stream_reset_connect(struct sock_xprt *transport)
transport->recv.len = 0;
transport->recv.copied = 0;
transport->xmit.offset = 0;
}
static void
xs_stream_start_connect(struct sock_xprt *transport)
{
transport->xprt.stat.connect_count++;
transport->xprt.stat.connect_start = jiffies;
}
@ -1255,6 +1260,8 @@ static void xs_reset_transport(struct sock_xprt *transport)
xprt_clear_connected(xprt);
write_unlock_bh(&sk->sk_callback_lock);
xs_sock_reset_connection_flags(xprt);
/* Reset stream record info */
xs_stream_reset_connect(transport);
mutex_unlock(&transport->recv_mutex);
trace_rpc_socket_close(xprt, sock);
@ -1906,7 +1913,7 @@ static int xs_local_finish_connecting(struct rpc_xprt *xprt,
write_unlock_bh(&sk->sk_callback_lock);
}
xs_stream_reset_connect(transport);
xs_stream_start_connect(transport);
return kernel_connect(sock, xs_addr(xprt), xprt->addrlen, 0);
}
@ -2264,8 +2271,7 @@ static int xs_tcp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock)
xs_set_memalloc(xprt);
/* Reset TCP record info */
xs_stream_reset_connect(transport);
xs_stream_start_connect(transport);
/* Tell the socket layer to start connecting... */
set_bit(XPRT_SOCK_CONNECTING, &transport->sock_state);