linux-kernel - Re: [PATCH RESEND v7 2/2] mmc: card: Adding support for sanitize in eMMC 4.5

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Message-ID: <87629k9rkc.fsf@octavius.laptop.org>
Date:	Thu, 19 Jul 2012 02:46:11 -0400
From:	Chris Ball <cjb@...top.org>
To:	Yaniv Gardi <ygardi@...eaurora.org>
Cc:	linux-mmc@...r.kernel.org, merez@...eaurora.org,
	linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org (open list)
Subject: Re: [PATCH RESEND v7 2/2] mmc: card: Adding support for sanitize in eMMC 4.5

Hi Yaniv,

On Thu, Jun 28 2012, Yaniv Gardi wrote:
> This feature delete the unmap memory region of the eMMC card,
> by writing to a specific register in the EXT_CSD
> unmap region is the memory region that were previously deleted
> (by erase, trim or discard operation)
>
> Signed-off-by: Yaniv Gardi <ygardi@...eaurora.org>

Did you reply to Chuanxiao's review comments yet?  He said:

"So to implement your scenario, how about only add
mmc_blk_issue_sanitize_rq() for REQ_SANITIZE but not touch
mmc_blk_issue_secdiscard_rq()? With your changes in
mmc_blk_issue_secdiscard_rq(), eMMC4.5 device will be failed to operate
secure trim/erase for REQ_SECURE request."

at: http://thread.gmane.org/gmane.linux.kernel.mmc/14822/focus=14880

Thanks,

- Chris.
-- 
Chris Ball   <cjb@...top.org>   <http://printf.net/>
One Laptop Per Child
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