From: Kees Cook <keescook@chromium.org>
To: Christoph Hellwig <hch@lst.de>
Cc: Richard Weinberger <richard@nod.at>,
linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org,
WeiXiong Liao <gmpy.liaowx@gmail.com>
Subject: Re: use case for register_pstore_blk?
Date: Wed, 7 Oct 2020 11:40:36 -0700 [thread overview]
Message-ID: <202010071130.7EA00291@keescook> (raw)
In-Reply-To: <20201007083715.GA15695@lst.de>
On Wed, Oct 07, 2020 at 10:37:15AM +0200, Christoph Hellwig wrote:
> Looking at this more: in addition to the block code being totally
> broken, there is really no point in mtdpstore even using this code.
> It does nothing but minimal parameter validation to just pass it
> on to the pstore zone interface. IMHO writing the mtd code directly
> to the zone interface makes a whole lot more sense even if we grow
> a non-broken block backend at some point. Something like this:
I really don't like this, sorry. I'm using the pstore/blk bits myself
already, and I don't want that removed. Additionally I really don't want
the structures open-coded in the MTD driver. The whole point was to
encapsulate it. I've spent a lot of time clawing pstore back from the
brink of open-coded argument and member explosion. :)
I'm fine to drop the exported register_pstore_blk() API until someone
actually uses it, but I want to keep pstore/blk itself and the existing
separation between pstore backing devices and pstore storage logic so
that configuration happens at the storage level, not the backing device
level. My intent, for example, is to migrate ramoops to pstore/zone,
etc, and remove all the ramoops-specific configuration which is common
to pstore/zone.
--
Kees Cook
______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/
next prev parent reply other threads:[~2020-10-07 18:42 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20201006155220.GA11668@lst.de>
[not found] ` <202010070007.8FF59EC42@keescook>
[not found] ` <20201007075537.GA12531@lst.de>
2020-10-07 8:37 ` use case for register_pstore_blk? Christoph Hellwig
2020-10-07 18:40 ` Kees Cook [this message]
2020-10-07 18:42 ` Christoph Hellwig
2020-10-07 19:17 ` Kees Cook
2020-10-12 7:02 ` Christoph Hellwig
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=202010071130.7EA00291@keescook \
--to=keescook@chromium.org \
--cc=gmpy.liaowx@gmail.com \
--cc=hch@lst.de \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mtd@lists.infradead.org \
--cc=richard@nod.at \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).