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nfsd: skip CB_NULL probes for 4.1 or later 

With sessions in v4.1 or later we don't need to manually probe the backchannel
connection, so we can declare it up instantly after setting up the RPC client.

Note that we really should split nfsd4_run_cb_work in the long run, this is
just the least intrusive fix for now.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
hifive-unleashed-5.1
Christoph Hellwig 2015-04-30 11:49:25 +02:00 committed by J. Bruce Fields
parent cba5f62b18
commit 4bd9e9b77f
1 changed files with 9 additions and 0 deletions
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9
fs/nfsd/nfs4callback.c
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@ -1066,6 +1066,15 @@ nfsd4_run_cb_work(struct work_struct *work)
cb->cb_ops->release(cb);
return;
}
/*
* Don't send probe messages for 4.1 or later.
*/
if (!cb->cb_ops && clp->cl_minorversion) {
clp->cl_cb_state = NFSD4_CB_UP;
return;
}
cb->cb_msg.rpc_cred = clp->cl_cb_cred;
rpc_call_async(clnt, &cb->cb_msg, RPC_TASK_SOFT | RPC_TASK_SOFTCONN,
cb->cb_ops ? &nfsd4_cb_ops : &nfsd4_cb_probe_ops, cb);