On Tuesday 17 February 2004 19:19, Andrew Morton wrote:

I don't see any licensing issues with the patch because the filesystem
which needs it clearly meets Linus's "this is not a derived work" criteria.

And I don't see a technical problem with the export: given that we export
truncate_inode_pages() it makes sense to also export the corresponding
pagetable shootdown function.

Yes, this is a sensitive issue.  Can we please evaluate it strictly
according to technical and licensing considerations?

Having said that, what concerns issues remain with Paul's patch?

Hi Andrew,

OpenGFS and Sistina GFS use zap_page_range directly, essentially doing the 
same as invalidate_mmap_range but skipping any vmas belonging to MAP_PRIVATE 
mmaps.  This avoids destroying data on anon pages.  GPFS and every other DFS 
have the same problem as far as I can see, and it isn't addressed by 
exporting invalidate_mmap_range as it stands.  Paul?

Regards,

Daniel

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