KVM: use kvm_release_page_clean to release the page

In kvm_async_pf_wakeup_all, it uses bad_page to generate broadcast wakeup,
and uses put_page to release bad_page, the work depends on the fact that
bad_page is the normal page. But we will use the error code instead of
bad_page, so use kvm_release_page_clean to release the page which will
release the error code properly

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

diff --git a/virt/kvm/async_pf.c b/virt/kvm/async_pf.c
index 74268b4..ebae24b 100644 (file)
--- a/virt/kvm/async_pf.c
+++ b/virt/kvm/async_pf.c
@@ -112,7 +112,7 @@ void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu)
                                   typeof(*work), link);
                list_del(&work->link);
                if (work->page)
-                       put_page(work->page);
+                       kvm_release_page_clean(work->page);
                kmem_cache_free(async_pf_cache, work);
        }
        spin_unlock(&vcpu->async_pf.lock);
@@ -139,7 +139,7 @@ void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu)
                list_del(&work->queue);
                vcpu->async_pf.queued--;
                if (work->page)
-                       put_page(work->page);
+                       kvm_release_page_clean(work->page);
                kmem_cache_free(async_pf_cache, work);
        }
 }