[PATCH 1/3] KVM: MMU: using kvm_release_pfn_clean to release pfn

From: Xiao Guangrong
Date: Mon Jul 23 2012 - 10:05:23 EST

The current code depends on fault_page is the normal page, but we will
use the error code instead of dummy page in the later patch, so using
kvm_release_pfn_clean to release pfn which will release error code probably

Signed-off-by: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxxxxxx>
arch/x86/kvm/mmu.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 2419934..a9a2052 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -3275,7 +3275,7 @@ static bool try_async_pf(struct kvm_vcpu *vcpu, bool prefault, gfn_t gfn,
if (!async)
return false; /* *pfn has correct page already */

- put_page(pfn_to_page(*pfn));
+ kvm_release_pfn_clean(*pfn);

if (!prefault && can_do_async_pf(vcpu)) {
trace_kvm_try_async_get_page(gva, gfn);

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