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    SubjectRe: [vendor-sec] [BUG/PATCH/RFC] Oops while completing async USB via usbdevio
    On Tue, 27 Sep 2005 at 06:09:38 Greg KH wrote:
    > On Tue, Sep 27, 2005 at 01:59:56PM +0100, Christoph Hellwig wrote:
    > >
    > > This is more than messy. usbfs is the only user of SI_ASYNCIO, and the
    > > way it uses it is more than messy. Why can't USB simply use the proper
    > > AIO infrastructure?
    > No one has taken the time and effort to do this. No other reason that I
    > know of. David? I know you have looked into this a bit in the past.

    Time and effort are the main issues I know of. First we'd need some
    kind of FD-per-endpoint infrastructure, then it should be easy to
    implement the AIO file ops, one kiocb per URB ... much like "gadgetfs"
    does for USB peripherals, one kiocb per usb_request.

    - Dave

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