From b9f67a420b3d76991592558af06e9cf1b8953b3d Mon Sep 17 00:00:00 2001
From: Davidlohr Bueso <dave@stgolabs.net>
Date: Wed, 13 Sep 2017 13:08:19 -0700
Subject: [PATCH] kvm,async_pf: Use swq_has_sleeper()
Git-commit: b9f67a420b3d76991592558af06e9cf1b8953b3d
Patch-mainline: v4.14-rc1
References: bsc#1060747
... 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>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
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