From 4c63b1f88efc172515fa65e15e4c5f60e695b61f Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Mon, 6 Mar 2006 05:14:19 +0000
Subject: [PATCH] Prevent autovacuum from zeroing damaged pages.

---
 src/backend/postmaster/autovacuum.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/backend/postmaster/autovacuum.c b/src/backend/postmaster/autovacuum.c
index 8fb818a325..02417d73ab 100644
--- a/src/backend/postmaster/autovacuum.c
+++ b/src/backend/postmaster/autovacuum.c
@@ -10,7 +10,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/postmaster/autovacuum.c,v 1.12 2006/03/05 15:58:35 momjian Exp $
+ *	  $PostgreSQL: pgsql/src/backend/postmaster/autovacuum.c,v 1.13 2006/03/06 05:14:19 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -125,6 +125,9 @@ autovac_start(void)
 	if (!AutoVacuumingActive())
 		return 0;
 
+	/* Even if zero_damaged_pages is true, we don't want autovacuum zeroing. */
+	zero_damaged_pages = false;
+
 	/*
 	 * Do nothing if too soon since last autovacuum exit.  This limits how
 	 * often the daemon runs.  Since the time per iteration can be quite