From: Mimi Zohar <zohar@linux.vnet.ibm.com>
Date: Tue, 17 Jan 2012 20:40:02 +0000 (+0000)
Subject: encrypted-keys: fix rcu and sparse messages
X-Git-Tag: v3.3-rc1~22^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6ac6172a935d1faf7ef259802267657bc0007a62;p=pandora-kernel.git

encrypted-keys: fix rcu and sparse messages

Enabling CONFIG_PROVE_RCU and CONFIG_SPARSE_RCU_POINTER resulted in
"suspicious rcu_dereference_check() usage!" and "incompatible types
in comparison expression (different address spaces)" messages.

Access the masterkey directly when holding the rwsem.

Changelog v1:
- Use either rcu_read_lock()/rcu_derefence_key()/rcu_read_unlock()
or remove the unnecessary rcu_derefence() - David Howells

Reported-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
---

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