Re: Non-GPL export of invalidate_mmap_range

Paul E. McKenney
2004-02-19T08:58:19Z

On Thu, Feb 19, 2004 at 10:11:32AM +0100, David Weinehall wrote:
> On Wed, Feb 18, 2004 at 02:51:32PM -0800, Andrew Morton wrote:
> > Christoph Hellwig <hch@infradead.org> wrote:
> > >
> > > I don't understand why IBM is pushing this dubious change right now,
> >
> > It isn't a dubious change, on technical grounds. It is reasonable for a
> > distributed filesystem to want to be able to shoot down pte's which map
> > sections of pagecache. Just as it is reasonable for the filesystem to be
> > able to shoot down the pagecache itself.
> >
> > We've exported much lower-level stuff than this, because some in-kernel
> > module happened to use it.
>
> Probably not always the right choice, though... I highly suspect we
> far to much of our intestines are easily available.

Again, the whole point of the patch is to -reduce- the degree of
intestinal export.

Thanx, Paul