linux-kernel - Re: [PATCH] nvme-pci: Fix incorrect use of CMB size to calculate q

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Date:   Tue, 6 Feb 2018 08:05:52 -0700
From:   Keith Busch <keith.busch@...el.com>
To:     sbates@...thlin.com
Cc:     axboe@...com, hch@....de, sagi@...mberg.me,
        linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] nvme-pci: Fix incorrect use of CMB size to calculate
 q_depth

On Mon, Feb 05, 2018 at 03:32:23PM -0700, sbates@...thlin.com wrote:
>  
> -	if (dev->cmb && (dev->cmbsz & NVME_CMBSZ_SQS)) {
> +	if (dev->cmb && use_cmb_sqes && (dev->cmbsz & NVME_CMBSZ_SQS)) {

Is this a prep patch for something coming later? dev->cmb is already
NULL if use_cmb_sqes is false.