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

[Wolfgang Denk]

In message <[e-mail]> Larry McVoy wrote:
>
> A couple of points.  If you are going to rewrite, then you should rewrite.
> I'm told, and I've seen, that there substantial parts of RT/Linux in the
> RTAI source base.  Isn't it true that RTAI used to be called "my-rtai"

You have seen what? Did you really compare RTAI  and  RT-Linux  code?
Which   "substantial   parts"   are  you  talking  about?  Please  be
specific!!!

> and the guy who did that work freely admitted that it was a fork of the 
> RT/Linux source base?

Yes, of course it was a fork at a very early point  of  the  develop-
ment. So what? Nobody denies that RTAI is based on the same core idea
as RT-Linux - that's why the RT-Linux patent _is_ an issue to RTAI.

On the other hand, a lot of significant features originaten in  RTAI,
and have been implemented in RT-Linux later - floating point support,
to name just one.

> want to support it, and will do so if it is really free.  On the other
> hand, as soon as money enters the equation, the rules will change and
> you're just going to have to deal with that.

Too true.

Wolfgang Denk

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Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
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