From 86fde74cf5b829627b37ca86322acfdd99b524b8 Mon Sep 17 00:00:00 2001
From: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Date: Tue, 17 Jul 2012 21:52:52 +0800
Subject: [PATCH] KVM: MMU: track the refcount when unmap the page

It will trigger a WARN_ON if the page has been freed but it is still
used in mmu, it can help us to detect mm bug early

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Reading git-format-patch failed