Messages in this thread | | | Date | Fri, 27 Jan 2006 15:00:31 +0100 | From | Jens Axboe <> | Subject | Re: How to map high memory for block io |
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On Fri, Jan 27 2006, Pierre Ossman wrote: > Pierre Ossman wrote: > > > > Doesn't seem like a generic solution is easily implemented. I'll start > > hacking together some way of specifying that highmem isn't supported so > > that mmc_block can indicate this to the block layer. > > > > 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.
-- Jens Axboe
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