On Wednesday, 03/10/2004 at 06:49 CST, Richard Troth <[EMAIL PROTECTED]>
wrote:
> > You let VM and MVS kernels read "plain files".
> > Why should Linux be different?
>
> Where and when and how MVS and VM read plain files
> doesn't necessarily match where, when, how Linux does.
> Even if they lined up,  it doesn't follow that Linux should follow.
> VM is wonderful,  as you know,  Alan.   But just because VM
> does something doesn't make it right.
>
> Why should Linux be different?
> Because of the Unix model Linux is based on.
> Another example would be where MVS has such a weak notion of
> filesystem.   Unix, Windows, OS/2, and many others,  including
> CMS and CP, all have a much stronger concept of "filesystem".
> FS is one point.   User/kernel sep is another.

MVS has a filesystem that is integrated into the base operating system; it
seems pretty strong to me.  It is CP has *no* integrated filesystem.

I find nothing inherently evil about a kernel reading user-space files.
Granted, I was reared by my parents (or wolves; historians aren't sure on
that point) to believe that it is ok.  Apparently others were brought up
to believe otherwise.  I can respect that.

"Because that's the way it's always been done" doesn't *have* to be the
rule we live by, eh?  :-)

Alan Altmark
Sr. Software Engineer
IBM z/VM Development

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