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SubjectRe: [PATCH -mm 3/4][AIO] - AIO completion signal notification

> OK, looking at this, there's something bothering me: io_submit_one() needs
> a pointer to the user iocb in order to push back the iocb->ki_key to userspace,
> as well as storing the user_iocb pointer into iocb->ki_obj.

Why can't it continue to do what it does today? Both of those uses of
the user_iocb pointer involve fixed-width fields and don't need compat help.

> So I think that some of the logic in io_submit_one() must be moved up to
> sys_io_submit(), including the aio_get_req() call.

I don't see why that would be needed.

- z
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