From 0e24d849c4ea777c59955b241fd3af14a1b84af5 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Fri, 28 Sep 2012 12:03:09 -0400
Subject: [PATCH] NFSv4: Remove BUG_ON() and ACCESS_ONCE() calls in the
 idmapper

The use of ACCESS_ONCE() is wrong, since the various routines that set/clear
idmap->idmap_key_cons should be strictly ordered w.r.t. each other, and
the idmap->idmap_mutex ensures that only one thread at a time may be in
an upcall situation.

Also replace the BUG_ON()s with WARN_ON_ONCE() where appropriate.

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