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| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2016-08-05 19:03:31 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2016-08-05 19:22:22 -0400 |
| commit | 8d480326c3d6921ff5f1cc988c993bd572248deb (patch) | |
| tree | eb2eac08a44bc78241d78291de545f37f6f3fd51 /net/sunrpc/clnt.c | |
| parent | fb10fb67ad2ce43d5e5b8ad22d2ba826844acc56 (diff) | |
| download | linux-0-day-8d480326c3d6921ff5f1cc988c993bd572248deb.tar.gz linux-0-day-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.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index faac5472d14db..7f79fb7dc6a00 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) { |