diff options
| -rw-r--r-- | drivers/vhost/scsi.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c index 4264840..4536539 100644 --- a/drivers/vhost/scsi.c +++ b/drivers/vhost/scsi.c @@ -896,19 +896,15 @@ vhost_scsi_handle_vq(struct vhost_scsi *vs, struct vhost_virtqueue *vq) int head, ret; u8 target; + mutex_lock(&vq->mutex); /* * We can handle the vq only after the endpoint is setup by calling the * VHOST_SCSI_SET_ENDPOINT ioctl. - * - * TODO: Check that we are running from vhost_worker which acts - * as read-side critical section for vhost kind of RCU. - * See the comments in struct vhost_virtqueue in drivers/vhost/vhost.h */ - vs_tpg = rcu_dereference_check(vq->private_data, 1); + vs_tpg = vq->private_data; if (!vs_tpg) - return; + goto out; - mutex_lock(&vq->mutex); vhost_disable_notify(&vs->dev, vq); for (;;) { @@ -1058,6 +1054,7 @@ err_free: vhost_scsi_free_cmd(cmd); err_cmd: vhost_scsi_send_bad_target(vs, vq, head, out); +out: mutex_unlock(&vq->mutex); } |