Signed-off-by: Asias He <asias@xxxxxxxxxx>
---
drivers/vhost/scsi.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
index 5531ebc..d78768b 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);
}
--
1.8.1.4
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