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SUNRPC: Don't auto-disconnect from the local rpcbind socket
There is no need for the kernel to time out the AF_LOCAL connection to the rpcbind socket, and doing so is problematic because when it is time to reconnect, our process may no longer be using the same mount namespace. Reported-by: Nix <nix@esperi.org.uk> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Jeff Layton <jlayton@redhat.com> Cc: stable@vger.kernel.org # 3.9.x
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@ -238,6 +238,14 @@ static int rpcb_create_local_unix(struct net *net)
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.program = &rpcb_program,
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.version = RPCBVERS_2,
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.authflavor = RPC_AUTH_NULL,
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/*
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* We turn off the idle timeout to prevent the kernel
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* from automatically disconnecting the socket.
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* Otherwise, we'd have to cache the mount namespace
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* of the caller and somehow pass that to the socket
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* reconnect code.
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*/
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.flags = RPC_CLNT_CREATE_NO_IDLE_TIMEOUT,
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};
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struct rpc_clnt *clnt, *clnt4;
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int result = 0;
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