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authorAsias He <asias@redhat.com>2013-05-07 14:54:36 +0800
committerMichael S. Tsirkin <mst@redhat.com>2013-07-11 15:38:40 +0300
commit22fa90c7fb479694d6affebc049d21f06b714be6 (patch)
treefd62ad11e27171f38d29470e5935736d835d3a4c /drivers/vhost/scsi.c
parente7802212ea4bbbd5db99181942a19ab36ca4b914 (diff)
downloadblackbird-op-linux-22fa90c7fb479694d6affebc049d21f06b714be6.tar.gz
blackbird-op-linux-22fa90c7fb479694d6affebc049d21f06b714be6.zip
vhost: Remove custom vhost rcu usage
Now, vq->private_data is always accessed under vq mutex. No need to play the vhost rcu trick. Signed-off-by: Asias He <asias@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vhost/scsi.c')
-rw-r--r--drivers/vhost/scsi.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
index 45365396dbbc..35ab0ce98414 100644
--- a/drivers/vhost/scsi.c
+++ b/drivers/vhost/scsi.c
@@ -1223,9 +1223,8 @@ vhost_scsi_set_endpoint(struct vhost_scsi *vs,
sizeof(vs->vs_vhost_wwpn));
for (i = 0; i < VHOST_SCSI_MAX_VQ; i++) {
vq = &vs->vqs[i].vq;
- /* Flushing the vhost_work acts as synchronize_rcu */
mutex_lock(&vq->mutex);
- rcu_assign_pointer(vq->private_data, vs_tpg);
+ vq->private_data = vs_tpg;
vhost_init_used(vq);
mutex_unlock(&vq->mutex);
}
@@ -1304,9 +1303,8 @@ vhost_scsi_clear_endpoint(struct vhost_scsi *vs,
if (match) {
for (i = 0; i < VHOST_SCSI_MAX_VQ; i++) {
vq = &vs->vqs[i].vq;
- /* Flushing the vhost_work acts as synchronize_rcu */
mutex_lock(&vq->mutex);
- rcu_assign_pointer(vq->private_data, NULL);
+ vq->private_data = NULL;
mutex_unlock(&vq->mutex);
}
}
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