[v3,5/7] KVM: handle more completed apfs if possible

Commit Message

Xiao Guangrong Nov. 2, 2010, 9:35 a.m. UTC

None

Patch

diff --git a/virt/kvm/async_pf.c b/virt/kvm/async_pf.c
index 60df9e0..100c66e 100644
--- a/virt/kvm/async_pf.c
+++ b/virt/kvm/async_pf.c
@@ -124,24 +124,24 @@  void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu)
 {
 	struct kvm_async_pf *work;
 
-	if (list_empty_careful(&vcpu->async_pf.done) ||
-	    !kvm_arch_can_inject_async_page_present(vcpu))
-		return;
-
-	spin_lock(&vcpu->async_pf.lock);
-	work = list_first_entry(&vcpu->async_pf.done, typeof(*work), link);
-	list_del(&work->link);
-	spin_unlock(&vcpu->async_pf.lock);
+	while (!list_empty_careful(&vcpu->async_pf.done) &&
+	      kvm_arch_can_inject_async_page_present(vcpu)) {
+		spin_lock(&vcpu->async_pf.lock);
+		work = list_first_entry(&vcpu->async_pf.done, typeof(*work),
+					      link);
+		list_del(&work->link);
+		spin_unlock(&vcpu->async_pf.lock);
 
-	if (work->page)
-		kvm_arch_async_page_ready(vcpu, work);
-	kvm_arch_async_page_present(vcpu, work);
+		if (work->page)
+			kvm_arch_async_page_ready(vcpu, work);
+		kvm_arch_async_page_present(vcpu, work);
 
-	list_del(&work->queue);
-	vcpu->async_pf.queued--;
-	if (work->page)
-		put_page(work->page);
-	kmem_cache_free(async_pf_cache, work);
+		list_del(&work->queue);
+		vcpu->async_pf.queued--;
+		if (work->page)
+			put_page(work->page);
+		kmem_cache_free(async_pf_cache, work);
+	}
 }
 
 int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn,