The eMMC 4.5 and later specifications mention that the "Secure Erase"
and "Secure Trim" operations are not meant for eMMC 4.5 and later
devices but the driver still performs those operations on when block
layer issues a SECDISCARD (or REQ_DISCARD|REQ_SECURE) request.
I dont know why the driver did not move to TRIM + SANITIZE or DISCARD +
SANITIZE and I could not find any email discussions about this.
I have seen the patches that provide sanitize via ioctls but I am more
interested if the driver should use the newer commands and should it
invoke sanitize when performing a secure discard operation..
--
Thanks,
Krishna Konda
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Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
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