From: Christoph Hellwig <hch@infradead.org>
To: Alex Lemberg <Alex.Lemberg@sandisk.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>,
Linus Walleij <linus.walleij@linaro.org>,
"linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>,
Chunyan Zhang <zhang.chunyan@linaro.org>,
Baolin Wang <baolin.wang@linaro.org>,
Namjae Jeon <namjae.jeon@samsung.com>,
Maya Erez <qca_merez@qca.qualcomm.com>
Subject: Re: [PATCH v3] mmc: block: delete packed command support
Date: Mon, 28 Nov 2016 00:23:40 -0800 [thread overview]
Message-ID: <20161128082340.GA5391@infradead.org> (raw)
In-Reply-To: <50128E8A-D7B3-49E3-9E18-4AD240F1EBD0@sandisk.com>
On Sun, Nov 27, 2016 at 02:25:15PM +0000, Alex Lemberg wrote:
> I understand your concerns about the current packed commands
> support and the problem of transition to blk_mq.
> But as I mentioned in previous email thread, the packed commands
> feature is still in use on eMMC4.5 or eMMC5.1 devices on hosts
> without SW/HW CMDQ support.
> Taking this feature out meaning stop supporting one of important
> performance features of eMMC devices.
> Looking forward this feature is replaced with a CMDQ, but should we
> kill it for those who doesn’t have a CMDQ?
No driver actually uses it, as-is it's simply dead code.
next prev parent reply other threads:[~2016-11-28 8:23 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-25 9:35 [PATCH v3] mmc: block: delete packed command support Linus Walleij
2016-11-25 13:30 ` Ulf Hansson
2016-11-27 14:25 ` Alex Lemberg
2016-11-28 8:23 ` Christoph Hellwig [this message]
2016-11-28 11:35 ` Ulf Hansson
2016-11-29 14:25 ` Linus Walleij
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=20161128082340.GA5391@infradead.org \
--to=hch@infradead.org \
--cc=Alex.Lemberg@sandisk.com \
--cc=baolin.wang@linaro.org \
--cc=linus.walleij@linaro.org \
--cc=linux-mmc@vger.kernel.org \
--cc=namjae.jeon@samsung.com \
--cc=qca_merez@qca.qualcomm.com \
--cc=ulf.hansson@linaro.org \
--cc=zhang.chunyan@linaro.org \
/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