3.11.10.12 -stable review patch. If anyone has any objections, please let me know.
------------------
From: =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= <rkrcmar@xxxxxxxxxx>
commit 98fda169290b3b28c0f2db2b8f02290c13da50ef upstream.
'.done' is used to mark the completion of 'async_pf_execute()', but
'cancel_work_sync()' returns true when the work was canceled, so we
use it instead.
Signed-off-by: Radim Krčmář <rkrcmar@xxxxxxxxxx>
Reviewed-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Reviewed-by: Gleb Natapov <gleb@xxxxxxxxxx>
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
---
include/linux/kvm_host.h | 1 -
virt/kvm/async_pf.c | 5 +----
2 files changed, 1 insertion(+), 5 deletions(-)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index a63d83ebd151..e5ab7ec6ce93 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -178,7 +178,6 @@ struct kvm_async_pf {
unsigned long addr;
struct kvm_arch_async_pf arch;
struct page *page;
- bool done;
};
void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu);
diff --git a/virt/kvm/async_pf.c b/virt/kvm/async_pf.c
index 8a39dda7a325..b197950ac4d5 100644
--- a/virt/kvm/async_pf.c
+++ b/virt/kvm/async_pf.c
@@ -75,7 +75,6 @@ static void async_pf_execute(struct work_struct *work)
spin_lock(&vcpu->async_pf.lock);
list_add_tail(&apf->link, &vcpu->async_pf.done);
apf->page = page;
- apf->done = true;
spin_unlock(&vcpu->async_pf.lock);
/*
@@ -99,9 +98,8 @@ void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu)
struct kvm_async_pf *work =
list_entry(vcpu->async_pf.queue.next,
typeof(*work), queue);
- cancel_work_sync(&work->work);
list_del(&work->queue);
- if (!work->done) { /* work was canceled */
+ if (cancel_work_sync(&work->work)) {
mmdrop(work->mm);
kvm_put_kvm(vcpu->kvm); /* == work->vcpu->kvm */
kmem_cache_free(async_pf_cache, work);
@@ -166,7 +164,6 @@ int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn,
return 0;
work->page = NULL;
- work->done = false;
work->vcpu = vcpu;
work->gva = gva;
work->addr = gfn_to_hva(vcpu->kvm, gfn);
--
1.9.1
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