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    SubjectRe: Calculating kernel logical address ..
    On Monday 09 September 2002 20:13, Jesse Barnes wrote:
    > On Mon, Sep 09, 2002 at 02:00:35PM -0400, Richard B. Johnson wrote:
    > > Well I just read Documentation/DMA-mapping.txt as advised by David
    > > and it seems as though it will no longer be possible to do what
    > > many programmers have been wanting to do, to wit:
    > >
    > > (1) In user-code, allocate a buffer.
    > > (2) Lock that buffer into memory.
    > > (3) Call some driver that DMAs data to/from that buffer.
    > It looks drivers/media/video/video-buf.c uses alloc_kiovec() and
    > map_user_kiobuf() to do it. And I think Ben LaHaise was talking about
    > removing these functions and creating some other, lightweight
    > interface for the same purpose?

    Hopefully. My understanding is that kio is obsoleted by bio and aio,
    anyone want to confirm/deny this?

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