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    SubjectRe: [PATCH] 2.5.67-ac2 direct-IO for IDE taskfile ioctl (0/4)

    Does Task Management Command set help?
    For those who speak FibreChannel, this has meaning.

    I can be used as a means to test the depth of the protocol support for a
    family of drives. This is what www.linuxdiskcert.org was to be about, and
    maybe Jens will be able to make it happen. As I will be transfering the
    domain th Jens this summer.

    On Wed, 23 Apr 2003, Andrew Morton wrote:

    > Andries Brouwer <aebr@win.tue.nl> wrote:
    > >
    > > On Wed, Apr 23, 2003 at 03:35:00PM -0700, Andrew Morton wrote:
    > >
    > > > What is special about the IDE ioctl approach?
    > >
    > > Usually one wants to use the standard commands for I/O.
    > > But if the purpose is to talk to the drive (set password,
    > > set native max, eject, change ZIP drive from big floppy
    > > mode to removable disk mode, etc. etc.) then one needs
    > > a means to execute IDE commands "by hand".
    >
    > Yes, but none of these are performance-critical and they don't involve
    > large amnounts of data. A copy is OK.
    >
    > If all the rework against bio_map_user() and friends is needed for other
    > reasons then fine. But it doesn't seem to be needed for the IDE taskfile
    > ioctl.
    >

    Andre Hedrick
    LAD Storage Consulting Group

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