From: Avri Altman <avri.altman@wdc.com>
To: Ulf Hansson <ulf.hansson@linaro.org>,
linux-mmc@vger.kernel.org,
Adrian Hunter <adrian.hunter@intel.com>
Cc: linux-kernel@vger.kernel.org, Avri Altman <avri.altman@wdc.com>
Subject: [PATCH v2 0/2] Do not flush cache when it is disabled
Date: Sun, 18 Apr 2021 08:59:51 +0300 [thread overview]
Message-ID: <20210418055953.26959-1-avri.altman@wdc.com> (raw)
v1 -> v2:
- Attend Adrian's comments
Cache is a temporary storage space in an eMMC device. Volatile by
nature, the cache should in typical case reduce the access time compared
to an access to the main nonvolatile storage.
The cache function can be turned ON and OFF. Once OFF, the host is not
expected to issue a flush-cache command to the device.
Avri Altman (2):
mmc: block: Issue flush only if allowed
mmc: block: Update ext_csd.cache_ctrl if it was written
drivers/mmc/core/block.c | 19 +++++++++++++++++++
drivers/mmc/core/mmc_ops.c | 4 +---
drivers/mmc/core/mmc_ops.h | 5 +++++
3 files changed, 25 insertions(+), 3 deletions(-)
--
2.25.1
next reply other threads:[~2021-04-18 6:00 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-18 5:59 Avri Altman [this message]
2021-04-18 5:59 ` [PATCH v2 1/2] mmc: block: Issue flush only if allowed Avri Altman
2021-04-19 12:39 ` Ulf Hansson
2021-04-19 12:47 ` Avri Altman
2021-04-19 12:48 ` Avri Altman
2021-04-18 5:59 ` [PATCH v2 2/2] mmc: block: Update ext_csd.cache_ctrl if it was written Avri Altman
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=20210418055953.26959-1-avri.altman@wdc.com \
--to=avri.altman@wdc.com \
--cc=adrian.hunter@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mmc@vger.kernel.org \
--cc=ulf.hansson@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;
as well as URLs for NNTP newsgroup(s).