Messages in this thread | | | Date | Fri, 03 Sep 1999 16:59:57 +0200 | From | Manfred Spraul <> | Subject | Re: CONFIG_BIGMEM and rawio |
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"Stephen C. Tweedie" wrote: > If we have a himem-enabled page cache, > then these old devices may well require bounce buffers. When we > introduce support for 64G addressing, even today's scsi controllers will > need bounce buffers until all of the drivers are updated for DAC pci > addressing. Is that planed for 2.4?
> It _is_ short. It is doing the same job that the swap code does. The > point is to avoid having to re-implement the swap code over and over > again, once for raw IO, once for the page cache --- better just to move > the existing mechanism into the general-purpose IO code.
IIRC, Linus said that he would accept (non-block) device drivers which use map_user_kiobuf(). So I think we'll need a "bounce_user_kiobuf(..)" function anyway.
-- Manfred
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