vhost/scsi: Use safe iteration in vhost_scsi_complete_cmd_work()

The following patch changed the behavior which originally did safe
iteration. Make it safe as it was.

   12bdcbd539c6327c09da0503c674733cb2d82cb5
   vhost/scsi: Don't reinvent the wheel but use existing llist API

Signed-off-by: Byungchul Park <byungchul.park@lge.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
index 046f6d2..46539ca 100644 (file)
--- a/drivers/vhost/scsi.c
+++ b/drivers/vhost/scsi.c
@@ -519,7 +519,7 @@ static void vhost_scsi_complete_cmd_work(struct vhost_work *work)
                                        vs_completion_work);
        DECLARE_BITMAP(signal, VHOST_SCSI_MAX_VQ);
        struct virtio_scsi_cmd_resp v_rsp;
-       struct vhost_scsi_cmd *cmd;
+       struct vhost_scsi_cmd *cmd, *t;
        struct llist_node *llnode;
        struct se_cmd *se_cmd;
        struct iov_iter iov_iter;
@@ -527,7 +527,7 @@ static void vhost_scsi_complete_cmd_work(struct vhost_work *work)
 
        bitmap_zero(signal, VHOST_SCSI_MAX_VQ);
        llnode = llist_del_all(&vs->vs_completion_list);
-       llist_for_each_entry(cmd, llnode, tvc_completion_list) {
+       llist_for_each_entry_safe(cmd, t, llnode, tvc_completion_list) {
                se_cmd = &cmd->tvc_se_cmd;
 
                pr_debug("%s tv_cmd %p resid %u status %#02x\n", __func__,