Re: 2.6.0-test10-mm1

[Andrew Morton]

Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
>
> On Tue, Nov 25, 2003 at 09:15:18PM -0800, Andrew Morton wrote:
> > +invalidate_mmap_range-non-gpl-export.patch
> > 
> >  Export invalidate_mmap_range() to all modules
> 
> Why?

The individual patches in the broken-out/ directory are usually
changelogged.  This one says:

  It was EXPORT_SYMBOL_GPL(), however IBM's GPFS is not GPL.

  - the GPFS team contributed to the testing and development of
    invaldiate_mmap_range().

  - GPFS was developed under AIX and was ported to Linux, and hence meets
    Linus's "some binary modules are OK" exemption.

  - The export makes sense: clustering filesystems need it for shootdowns to
    ensure cache coherency.


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