Remove medium size classes.

Remove medium size classes, because concurrent dirty page purging is
no longer capable of purging inactive dirty pages inside active runs
(due to recent arena/bin locking changes).

Enhance tcache to support caching large objects, so that the same range
of size classes is still cached, despite the removal of medium size
class support.
12 files changed
tree: abea413fa035c70d61e180585c85074d11be341a
  1. jemalloc/
  2. .gitignore