Matthew Wilcox <wi...@infradead.org> wrote: > So ... a page with both flags cleared should have a refcount of N. > A page with one or both flags set should have a refcount of N+1. > ... > How is a poor filesystem supposed to make that true? Also btrfs has this > problem since it uses private_2 for its own purposes.
It's simpler if it's N+2 for both patches set. Btw, patch 13 adds that - and possibly that should be merged into an earlier patch. David
