Resurrecting per-page cleaner for btree - Mailing list pgsql-patches

This is a revised patch originated by Junji TERAMOTO for HEAD.
  [BTree vacuum before page splitting]
  http://archives.postgresql.org/pgsql-patches/2006-01/msg00301.php

I think we can resurrect his idea because we will scan btree pages
at-atime now; the missing-restarting-point problem went away.

Have I missed something? Comments welcome.

Regards,
---
ITAGAKI Takahiro
NTT Open Source Software Center