From 43ac3f2961b8616da26114ec6dc76ac2a61f76ad Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 20 Mar 2006 13:44:51 -0500 Subject: SUNRPC: Fix memory barriers for req->rq_received We need to ensure that all writes to the XDR buffers are done before req->rq_received is visible to other processors. Signed-off-by: Trond Myklebust --- net/sunrpc/clnt.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'net/sunrpc/clnt.c') diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 9f775302d1df..6e71d6ace5a3 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -1069,6 +1069,11 @@ call_decode(struct rpc_task *task) return; } + /* + * Ensure that we see all writes made by xprt_complete_rqst() + * before it changed req->rq_received. + */ + smp_rmb(); req->rq_rcv_buf.len = req->rq_private_buf.len; /* Check that the softirq receive buffer is valid */ -- cgit v1.2.3