/* This grabs the session lock to make sure no one is in xmit_task/queuecommand, and then sets suspend to prevent new commands from being queued. This only needs to be called by offload drivers that need to sync a path like ep disconnect with the iscsi_queuecommand/xmit_task. To start IO again libiscsi will call iscsi_start_tx and iscsi_unblock_session when in FFP.  */
void iscsi_suspend_queue(struct iscsi_conn *conn)
/* This grabs the session lock to make sure no one is in xmit_task/queuecommand, and then sets suspend to prevent new commands from being queued. This only needs to be called by offload drivers that need to sync a path like ep disconnect with the iscsi_queuecommand/xmit_task. To start IO again libiscsi will call iscsi_start_tx and iscsi_unblock_session when in FFP.  */
void iscsi_suspend_queue(struct iscsi_conn *conn)
{
	spin_lock_bh(&conn->session->lock);
	set_bit(ISCSI_SUSPEND_BIT, &conn->suspend_tx);
	spin_unlock_bh(&conn->session->lock);
}