tree 8a4e01aa30746063c33b8dec17cc759cecef16c4
parent e8a2fd83a2ddc082fcd4e49373ea05bd79213c71
author Jason Evans <jasone@canonware.com> 1408052758 -0700
committer Jason Evans <jasone@canonware.com> 1408052758 -0700

Fix and refactor runs_dirty-based purging.

Fix runs_dirty-based purging to also purge dirty pages in the spare
chunk.

Refactor runs_dirty manipulation into arena_dirty_{insert,remove}(), and
move the arena->ndirty accounting into those functions.

Remove the u.ql_link field from arena_chunk_map_t, and get rid of the
enclosing union for u.rb_link, since only rb_link remains.

Remove the ndirty field from arena_chunk_t.