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    SubjectRe: patent on O_ATOMICLOOKUP [Re: [PATCH] loopable tmpfs (2.4.17)]

    Kurt Wall wrote:
    > Sorry, I must have lost track of this argument. I thought the point of
    > contention was the RTLinux patent, which seems pretty clear on the key
    > issue: if your stuff is GPL, we're GPL; if you make money, we want a slice
    > of the pie. Now it almost sounds like you're telling us that the real
    > issue is that you can't make your own Linux-as-nonfree-rtos. Well, I'm not
    > very smart, so maybe I've misunderstood.

    Don't take my word for it. Here's an article written by Jerry Epplin in
    February 2001:
    http://www.linuxdevices.com/articles/AT2094189920.html

    He ends his article with the following:
    "It seems to me, RTLinux is a fine system with great potential when thought
    of as an open-source project. I'm not sure it will fare as well when looked
    at as a commercial RTOS."

    As for my own opinion, please reread my first post. It clearly says that
    the current rtlinux patent situation (in its entirety) is a show-stopper
    for Linux. Everything I said after that all boils down to explaining this
    point of view.

    > That dog won't hunt. There are more players in the Linux embedded/RT space
    > than RTAI and RTLinux, which you have conveniently overlooked throughout
    > this entire thread. Maybe at this time none of them are ready for $300
    > IPO pops, but you can't make the argument that "RT is closed to Linux"
    > when your only data points are RTAI and RTLinux.

    Care to look at the VDC report conducted over 11,000 developers. Result:
    the #1 fact inhibiting Linux's adoption in the embedded space is
    "real-time limitations."

    Don't listen to me, listen to 11,000 developers ...

    Karim

    ===================================================
    Karim Yaghmour
    karim@opersys.com
    Embedded and Real-Time Linux Expert
    ===================================================
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