Code review for auto-tuned effective_cache_size.

Tom Lane <tgl@sss.pgh.pa.us>

Commit: 2850896961994aa0993b9e2ed79a209750181b8a
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2014-01-27T05:05:56Z
Releases: 9.4.0
Code review for auto-tuned effective_cache_size.

Fix integer overflow issue noted by Magnus Hagander, as well as a bunch
of other infelicities in commit ee1e5662d8d8330726eaef7d3110cb7add24d058
and its unreasonably large number of followups.

Files