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authorTrond Myklebust <trond.myklebust@primarydata.com>2016-08-06 02:03:31 +0300
committerTrond Myklebust <trond.myklebust@primarydata.com>2016-08-06 02:22:22 +0300
commit8d480326c3d6921ff5f1cc988c993bd572248deb (patch)
treeeb2eac08a44bc78241d78291de545f37f6f3fd51 /net/sunrpc/clnt.c
parentfb10fb67ad2ce43d5e5b8ad22d2ba826844acc56 (diff)
downloadlinux-8d480326c3d6921ff5f1cc988c993bd572248deb.tar.xz
NFSv4: Cap the transport reconnection timer at 1/2 lease period
We don't want to miss a lease period renewal due to the TCP connection failing to reconnect in a timely fashion. To ensure this doesn't happen, cap the reconnection timer so that we retry the connection attempt at least every 1/2 lease period. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'net/sunrpc/clnt.c')
-rw-r--r--net/sunrpc/clnt.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index faac5472d14d..7f79fb7dc6a0 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -2676,6 +2676,27 @@ out_put_switch:
}
EXPORT_SYMBOL_GPL(rpc_clnt_add_xprt);
+static int
+rpc_xprt_cap_max_reconnect_timeout(struct rpc_clnt *clnt,
+ struct rpc_xprt *xprt,
+ void *data)
+{
+ unsigned long timeout = *((unsigned long *)data);
+
+ if (timeout < xprt->max_reconnect_timeout)
+ xprt->max_reconnect_timeout = timeout;
+ return 0;
+}
+
+void
+rpc_cap_max_reconnect_timeout(struct rpc_clnt *clnt, unsigned long timeo)
+{
+ rpc_clnt_iterate_for_each_xprt(clnt,
+ rpc_xprt_cap_max_reconnect_timeout,
+ &timeo);
+}
+EXPORT_SYMBOL_GPL(rpc_cap_max_reconnect_timeout);
+
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
static void rpc_show_header(void)
{