[REPOST][PATCH v3] nvmet: implement valid sqhd values in completions

[Christoph Hellwig]

On Wed, Sep 20, 2017 at 02:14:02PM +0300, Sagi Grimberg wrote:
> > -	if (likely(req->sq)) /* may happen during early failure */
> > -		req->rsp->sq_id = cpu_to_le16(req->sq->qid);
> 
> It wasn't documented why it is safe to remove the condition statement.

I'll add something to the commit log based on the discussion on the
list on the previous iteration.