[LSF/MM/BFP ATTEND] [LSF/MM/BFP TOPIC] Storage: Copy Offload

[Bart Van Assche]

On 11/16/21 05:43, Javier González wrote:
>              - Here, we need copy emulation to support encryption 
> without dealing with HW issues and garbage

Hi Javier,

Thanks very much for having taken notes and also for having shared 
these. Regarding the above comment, after the meeting I learned that the 
above is not correct. Encryption in Android is LBA independent and hence 
it should be possible to offload F2FS garbage collection in Android once 
the (UFS) storage controller supports this.

For the general case, I propose to let the dm-crypt driver decide 
whether or not to offload data copying since that driver knows whether 
or not data copying can be offloaded.

Thanks,

Bart.