SUNRPC: skip dead but not buried clients on PipeFS events
These clients can't be safely dereferenced if their counter in 0. Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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a4dff1bc49
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@ -218,7 +218,8 @@ static struct rpc_clnt *rpc_get_client_for_event(struct net *net, int event)
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if (((event == RPC_PIPEFS_MOUNT) && clnt->cl_dentry) ||
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((event == RPC_PIPEFS_UMOUNT) && !clnt->cl_dentry))
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continue;
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atomic_inc(&clnt->cl_count);
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if (atomic_inc_not_zero(&clnt->cl_count) == 0)
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continue;
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spin_unlock(&sn->rpc_client_lock);
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return clnt;
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}
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