Messages in this thread | | | Date | Mon, 14 Jan 2019 17:57:55 +0100 | From | Christoph Hellwig <> | Subject | Re: remove block layer bounce buffering for MMC |
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On Mon, Jan 14, 2019 at 04:52:40PM +0000, Robin Murphy wrote: > One general point for the kmap() conversions - it's not obvious (to me at > least) whether or how that would work for a segment where sg->length > > PAGE_SIZE. Or is there some cast-iron guarantee from the MMC mid-layer that > it will never let the block layer generate such things in the first place?
None of this will with such segments. But yes, I guess the old case could have worked as long as any physical contigous ranges are also virtually contigous. So we might have to throw in a page size segment boundary here.
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