From: Trond Myklebust Date: Fri, 22 Feb 2013 19:57:57 +0000 (-0500) Subject: SUNRPC: Don't start the retransmission timer when out of socket space X-Git-Tag: v3.8.3~76 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f1c0d40a55ba1dba9513a1796c26ebcb1b09e4d1;p=karo-tx-linux.git SUNRPC: Don't start the retransmission timer when out of socket space commit a9a6b52ee1baa865283a91eb8d443ee91adfca56 upstream. If the socket is full, we're better off just waiting until it empties, or until the connection is broken. The reason why we generally don't want to time out is that the call to xprt->ops->release_xprt() will trigger a connection reset, which isn't helpful... Let's make an exception for soft RPC calls, since they have to provide timeout guarantees. Signed-off-by: Trond Myklebust Signed-off-by: Greg Kroah-Hartman --- diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index 33811db8788a..ab0258880ebe 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -485,13 +485,17 @@ EXPORT_SYMBOL_GPL(xprt_wake_pending_tasks); * xprt_wait_for_buffer_space - wait for transport output buffer to clear * @task: task to be put to sleep * @action: function pointer to be executed after wait + * + * Note that we only set the timer for the case of RPC_IS_SOFT(), since + * we don't in general want to force a socket disconnection due to + * an incomplete RPC call transmission. */ void xprt_wait_for_buffer_space(struct rpc_task *task, rpc_action action) { struct rpc_rqst *req = task->tk_rqstp; struct rpc_xprt *xprt = req->rq_xprt; - task->tk_timeout = req->rq_timeout; + task->tk_timeout = RPC_IS_SOFT(task) ? req->rq_timeout : 0; rpc_sleep_on(&xprt->pending, task, action); } EXPORT_SYMBOL_GPL(xprt_wait_for_buffer_space);