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SUNRPC: Don't auto-disconnect from the local rpcbind socket

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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 <[email protected]>
Signed-off-by: Trond Myklebust <[email protected]>
Cc: Jeff Layton <[email protected]>
Cc: [email protected] # 3.9.x
This commit is contained in:
Trond Myklebust 2013-08-05 14:10:43 -04:00
commit 00326ed644
1 changed files with 8 additions and 0 deletions
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8
net/sunrpc/rpcb_clnt.c
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@ -238,6 +238,14 @@ static int rpcb_create_local_unix(struct net *net)
.program = &rpcb_program,
.version = RPCBVERS_2,
.authflavor = RPC_AUTH_NULL,
/*
* We turn off the idle timeout to prevent the kernel
* from automatically disconnecting the socket.
* Otherwise, we'd have to cache the mount namespace
* of the caller and somehow pass that to the socket
* reconnect code.
*/
.flags = RPC_CLNT_CREATE_NO_IDLE_TIMEOUT,
};
struct rpc_clnt *clnt, *clnt4;
int result = 0;