[PATCH 2/7] kvm,async_pf: Use swq_has_sleepers()

[Davidlohr Bueso]

... 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 <dbu...@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