linux-kernel - [PATCH v4 0/2] Do not flush cache when it is disabled

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210420134641.57343-1-avri.altman@wdc.com>
Date:   Tue, 20 Apr 2021 16:46:39 +0300
From:   Avri Altman <avri.altman@....com>
To:     Ulf Hansson <ulf.hansson@...aro.org>, linux-mmc@...r.kernel.org,
        Adrian Hunter <adrian.hunter@...el.com>
Cc:     linux-kernel@...r.kernel.org, Avri Altman <avri.altman@....com>
Subject: [PATCH v4 0/2] Do not flush cache when it is disabled

v3 -> v4
 - Attend Adrian's comments
 - Add Acked-by tag

v2 -> v3:
 - rebase onto recent cache changes

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   | 21 +++++++++++++++++++++
 drivers/mmc/core/mmc.c     |  2 +-
 drivers/mmc/core/mmc_ops.h |  5 +++++
 3 files changed, 27 insertions(+), 1 deletion(-)

-- 
2.25.1