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Subject[PATCH 2/6] kvm,async_pf: Use swq_has_sleepers()
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... as we've got the new helper now. This caller already
does the right thing, hence no changes in semantics.

Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
---
virt/kvm/async_pf.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/virt/kvm/async_pf.c b/virt/kvm/async_pf.c
index bb298a200cd3..57bcb27dcf30 100644
--- a/virt/kvm/async_pf.c
+++ b/virt/kvm/async_pf.c
@@ -106,11 +106,7 @@ static void async_pf_execute(struct work_struct *work)

trace_kvm_async_pf_completed(addr, gva);

- /*
- * This memory barrier pairs with prepare_to_wait's set_current_state()
- */
- smp_mb();
- if (swait_active(&vcpu->wq))
+ if (swq_has_sleeper(&vcpu->wq))
swake_up(&vcpu->wq);

mmput(mm);
--
2.12.0
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