perhaps you remember me posting a long time ago about generalizing
prio_tree. Now I finally got to make that patch. In fact, there are
- the prio_tree "core" in lib/
- switching mm/prio_tree.c to use the "core"
- some debugging extensions
The reason for wanting this generalization is that we'll also need
radix priority search trees for healthier barrier handling in the
IO scheduler (aka disk elevator).