KVM: convert slots_lock to a mutex

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

1 files changed, 8 insertions, 8 deletions

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 53bc06a68105..aff3479867a8 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2208,14 +2208,14 @@ static int kvm_vm_ioctl_set_nr_mmu_pages(struct kvm *kvm,
         if (kvm_nr_mmu_pages < KVM_MIN_ALLOC_MMU_PAGES)
                 return -EINVAL;
 
-        down_write(&kvm->slots_lock);
+        mutex_lock(&kvm->slots_lock);
         spin_lock(&kvm->mmu_lock);
 
         kvm_mmu_change_mmu_pages(kvm, kvm_nr_mmu_pages);
         kvm->arch.n_requested_mmu_pages = kvm_nr_mmu_pages;
 
         spin_unlock(&kvm->mmu_lock);
-        up_write(&kvm->slots_lock);
+        mutex_unlock(&kvm->slots_lock);
         return 0;
 }
 
@@ -2292,7 +2292,7 @@ static int kvm_vm_ioctl_set_memory_alias(struct kvm *kvm,
         if (!aliases)
                 goto out;
 
-        down_write(&kvm->slots_lock);
+        mutex_lock(&kvm->slots_lock);
 
         /* invalidate any gfn reference in case of deletion/shrinking */
         memcpy(aliases, kvm->arch.aliases, sizeof(struct kvm_mem_aliases));
@@ -2328,7 +2328,7 @@ static int kvm_vm_ioctl_set_memory_alias(struct kvm *kvm,
         r = 0;
 
 out_unlock:
-        up_write(&kvm->slots_lock);
+        mutex_unlock(&kvm->slots_lock);
 out:
         return r;
 }
@@ -2462,7 +2462,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
         unsigned long is_dirty = 0;
         unsigned long *dirty_bitmap = NULL;
 
-        down_write(&kvm->slots_lock);
+        mutex_lock(&kvm->slots_lock);
 
         r = -EINVAL;
         if (log->slot >= KVM_MEMORY_SLOTS)
@@ -2512,7 +2512,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
 out_free:
         vfree(dirty_bitmap);
 out:
-        up_write(&kvm->slots_lock);
+        mutex_unlock(&kvm->slots_lock);
         return r;
 }
 
@@ -2625,7 +2625,7 @@ long kvm_arch_vm_ioctl(struct file *filp,
                                    sizeof(struct kvm_pit_config)))
                         goto out;
         create_pit:
-                down_write(&kvm->slots_lock);
+                mutex_lock(&kvm->slots_lock);
                 r = -EEXIST;
                 if (kvm->arch.vpit)
                         goto create_pit_unlock;
@@ -2634,7 +2634,7 @@ long kvm_arch_vm_ioctl(struct file *filp,
                 if (kvm->arch.vpit)
                         r = 0;
         create_pit_unlock:
-                up_write(&kvm->slots_lock);
+                mutex_unlock(&kvm->slots_lock);
                 break;
         case KVM_IRQ_LINE_STATUS:
         case KVM_IRQ_LINE: {