From a76580fbf09e6e19c2040c08969af5137e064eda Mon Sep 17 00:00:00 2001
From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Mon, 20 May 2013 23:00:18 -0400
Subject: [PATCH] SUNRPC: Fix a potential race in rpc_execute

If the rpc_task is asynchronous, it could theoretically finish executing
on the workqueue it was assigned by rpc_make_runnable() before we get
round to testing RPC_IS_ASYNC() in rpc_execute.

In practice, however, all the existing callers hold a reference to the
rpc_task, so this can't happen today...

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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