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Hash twice

From: Simon Riggs <simon(at)2ndQuadrant(dot)com>
To: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Hash twice
Date: 2013-01-12 16:39:15
Message-ID: CA+U5nMK7agTq7GBn1z1OmzxFqc89VijJYQ_3CLDKYymdWr5gOg@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-hackers 
Lock code says it calculates "hash value once and then pass around as needed".

But it actually calculates it twice for new locks.

Trivial patch attached to make it follow the comments in
LockTagHashCode and save a few cycles.

-- 
 Simon Riggs                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services
Attachment: hash_once.v1.patch
Description: application/octet-stream (1.2 KB)

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