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authorTrond Myklebust <Trond.Myklebust@netapp.com>2013-02-22 14:57:57 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2013-02-22 15:17:17 -0500
commita9a6b52ee1baa865283a91eb8d443ee91adfca56 (patch)
treedb49569dc70d2a9d95d9d5b0d54371cba9f305d6 /net/sunrpc
parent5a7a613a47a715711b3f2d3322a0eac21d459166 (diff)
downloadlinux-a9a6b52ee1baa865283a91eb8d443ee91adfca56.tar.gz
SUNRPC: Don't start the retransmission timer when out of socket space
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 <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/xprt.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index 846c34fdee9..b7478d5e7ff 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -487,13 +487,17 @@ 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);