From: Weston Andros Adamson <dros@netapp.com>
Date: Tue, 30 Oct 2012 21:01:40 +0000 (-0400)
Subject: SUNRPC: add WARN_ON_ONCE for potential deadlock
X-Git-Tag: v3.8-rc1~72^2~100
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=168e4b39d1afb79a7e3ea6c3bb246b4c82c6bdb9;p=pandora-kernel.git

SUNRPC: add WARN_ON_ONCE for potential deadlock

rpc_shutdown_client should never be called from a workqueue context.
If it is, it could deadlock looping forever trying to kill tasks that are
assigned to the same kworker thread (and will never run rpc_exit_task).

Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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