linux-kernel - Re: [PATCH v2 11/11] mtd: new support oops logger based on pstore/blk

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Date:   Sun, 22 Mar 2020 08:13:59 -0700
From:   Kees Cook <keescook@...omium.org>
To:     WeiXiong Liao <liaoweixiong@...winnertech.com>
Cc:     Anton Vorontsov <anton@...msg.org>,
        Colin Cross <ccross@...roid.com>,
        Tony Luck <tony.luck@...el.com>,
        Jonathan Corbet <corbet@....net>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Rob Herring <robh@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mtd@...ts.infradead.org
Subject: Re: [PATCH v2 11/11] mtd: new support oops logger based on pstore/blk

On Sun, Mar 22, 2020 at 09:51:19PM +0800, WeiXiong Liao wrote:
> The physical features of MTD device require that the user configurations
> must meet some requirements. For example the record size must be
> multiples of page size of MTD flash. It's really different to block device.
> If we make this device driver "invisible", we should have other way to
> limit user configurations. The dmesg pstore front-end is the most easiest
> one to fix to. There are still much work to do to support other front-ends.

I finally understand this now -- I was still thinking of things like
nvme which ultimately expose a block layer. MTD appear to genuinely be a
"non-block" device. But it is still considered a "storage" device, yes?

So perhaps "block storage device" and "non-block storage device"?

-- 
Kees Cook