Re: How to map high memory for block io

Pierre Ossman
2006-01-27T14:15:03Z

Jens Axboe wrote:
> On Fri, Jan 27 2006, Pierre Ossman wrote:
>
>>
>> If I set the limit to BLK_BOUNCE_HIGH then (page_address(sg->page) +
>> sg->offset) is guaranteed to be directly accessible for the entire
>> sg->length on all architectures, right? This seems to be the assumption
>> in the USB ub driver at least.
>>
>
> Yes, hence my initial suggestion to just do that.
>
>

Just making sure I understood it correctly. These bugs tend to be a pain
to debug so I'd prefer to get it right from the start. :)

Thanks for the help.

Rgds
Pierre