KVM: convert slots_lock to a mutex

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 5 insertions, 5 deletions

diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
index 315a586ec4d5..486c604365d9 100644
--- a/virt/kvm/eventfd.c
+++ b/virt/kvm/eventfd.c
@@ -508,7 +508,7 @@ kvm_assign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
         else
                 p->wildcard = true;
 
-        down_write(&kvm->slots_lock);
+        mutex_lock(&kvm->slots_lock);
 
         /* Verify that there isnt a match already */
         if (ioeventfd_check_collision(kvm, p)) {
@@ -524,12 +524,12 @@ kvm_assign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
 
         list_add_tail(&p->list, &kvm->ioeventfds);
 
-        up_write(&kvm->slots_lock);
+        mutex_unlock(&kvm->slots_lock);
 
         return 0;
 
 unlock_fail:
-        up_write(&kvm->slots_lock);
+        mutex_unlock(&kvm->slots_lock);
 
 fail:
         kfree(p);
@@ -551,7 +551,7 @@ kvm_deassign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
         if (IS_ERR(eventfd))
                 return PTR_ERR(eventfd);
 
-        down_write(&kvm->slots_lock);
+        mutex_lock(&kvm->slots_lock);
 
         list_for_each_entry_safe(p, tmp, &kvm->ioeventfds, list) {
                 bool wildcard = !(args->flags & KVM_IOEVENTFD_FLAG_DATAMATCH);
@@ -571,7 +571,7 @@ kvm_deassign_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
                 break;
         }
 
-        up_write(&kvm->slots_lock);
+        mutex_unlock(&kvm->slots_lock);
 
         eventfd_ctx_put(eventfd);