diff options
Diffstat (limited to 'drivers/vhost')
| -rw-r--r-- | drivers/vhost/vhost.c | 24 |
1 files changed, 7 insertions, 17 deletions
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index b13c6b4b2c66..f52008bb8df7 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -294,8 +294,11 @@ static void vhost_vq_meta_reset(struct vhost_dev *d) { int i; - for (i = 0; i < d->nvqs; ++i) + for (i = 0; i < d->nvqs; ++i) { + mutex_lock(&d->vqs[i]->mutex); __vhost_vq_meta_reset(d->vqs[i]); + mutex_unlock(&d->vqs[i]->mutex); + } } static void vhost_vq_reset(struct vhost_dev *dev, @@ -891,20 +894,6 @@ static inline void __user *__vhost_get_user(struct vhost_virtqueue *vq, #define vhost_get_used(vq, x, ptr) \ vhost_get_user(vq, x, ptr, VHOST_ADDR_USED) -static void vhost_dev_lock_vqs(struct vhost_dev *d) -{ - int i = 0; - for (i = 0; i < d->nvqs; ++i) - mutex_lock_nested(&d->vqs[i]->mutex, i); -} - -static void vhost_dev_unlock_vqs(struct vhost_dev *d) -{ - int i = 0; - for (i = 0; i < d->nvqs; ++i) - mutex_unlock(&d->vqs[i]->mutex); -} - static int vhost_new_umem_range(struct vhost_umem *umem, u64 start, u64 size, u64 end, u64 userspace_addr, int perm) @@ -954,7 +943,10 @@ static void vhost_iotlb_notify_vq(struct vhost_dev *d, if (msg->iova <= vq_msg->iova && msg->iova + msg->size - 1 >= vq_msg->iova && vq_msg->type == VHOST_IOTLB_MISS) { + mutex_lock(&node->vq->mutex); vhost_poll_queue(&node->vq->poll); + mutex_unlock(&node->vq->mutex); + list_del(&node->node); kfree(node); } @@ -986,7 +978,6 @@ static int vhost_process_iotlb_msg(struct vhost_dev *dev, int ret = 0; mutex_lock(&dev->mutex); - vhost_dev_lock_vqs(dev); switch (msg->type) { case VHOST_IOTLB_UPDATE: if (!dev->iotlb) { @@ -1020,7 +1011,6 @@ static int vhost_process_iotlb_msg(struct vhost_dev *dev, break; } - vhost_dev_unlock_vqs(dev); mutex_unlock(&dev->mutex); return ret; |