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From: Avri Altman <avri.altman@wdc.com>
To: Ulf Hansson <ulf.hansson@linaro.org>, linux-mmc@vger.kernel.org
Cc: Adrian Hunter <adrian.hunter@intel.com>,
	linux-kernel@vger.kernel.org, Avri Altman <avri.altman@wdc.com>
Subject: [PATCH 0/2] Do not flush cache when it is disabled
Date: Mon, 22 Mar 2021 15:36:43 +0200	[thread overview]
Message-ID: <20210322133645.4901-1-avri.altman@wdc.com> (raw)

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   | 11 +++++++++++
 drivers/mmc/core/mmc_ops.c |  4 +---
 drivers/mmc/core/mmc_ops.h |  5 +++++
 3 files changed, 17 insertions(+), 3 deletions(-)

-- 
2.25.1


             reply	other threads:[~2021-03-22 13:38 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-22 13:36 Avri Altman [this message]
2021-03-22 13:36 ` [PATCH 1/2] mmc: block: Issue flush only if allowed Avri Altman
2021-03-22 18:00   ` Adrian Hunter
2021-03-22 13:36 ` [PATCH 2/2] mmc: block: Update ext_csd.cache_ctrl if it was written Avri Altman
2021-03-22 18:59   ` Adrian Hunter

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