Am Montag, 27. April 2015, 16:26:07 schrieb Herbert Xu:

Hi Herbert,

>On Sun, Apr 26, 2015 at 12:08:20AM +0200, Stephan Mueller wrote:
>> +            /*
>> +             * Point to the end of the scatterlists to walk them 
backwards.
>> +             */
>> +            src_walk.offset += src_nbytes;
>> +            dst_walk.offset += dst_nbytes;
>
>This doesn't work.  Our primitives don't support walking backwards
>over an SG list and what you have simply doesn't work except for the
>trivial case of a completely linear buffer.

Why do you think that will not work? I thought that the code works when the 
non-linear scatterlists are at least broken at an 8 byte boundary.
>
>Cheers,


Ciao
Stephan
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