v13-0002-Make-use-of-pg_memory_is_all_zeros-in-PageIsVeri.patch

From e5aaa29377f1d11d55ad781fdd17617a6e14f7df Mon Sep 17 00:00:00 2001
From: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Date: Fri, 8 Nov 2024 17:19:43 +0000
Subject: [PATCH v13 2/3] Make use of pg_memory_is_all_zeros() in
 PageIsVerifiedExtended()

Now that pg_memory_is_all_zeros() is optimized to handle multi bytes comparison
(instead of byte per byte), let's make use of it in PageIsVerifiedExtended().
---
 src/backend/storage/page/bufpage.c | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/src/backend/storage/page/bufpage.c b/src/backend/storage/page/bufpage.c
index be6f1f62d2..aa264f61b9 100644
--- a/src/backend/storage/page/bufpage.c
+++ b/src/backend/storage/page/bufpage.c
@@ -89,10 +89,8 @@ PageIsVerifiedExtended(Page page, BlockNumber blkno, int flags)
 {
 	PageHeader	p = (PageHeader) page;
 	size_t	   *pagebytes;
-	int			i;
 	bool		checksum_failure = false;
 	bool		header_sane = false;
-	bool		all_zeroes = false;
 	uint16		checksum = 0;
 
 	/*
@@ -126,18 +124,9 @@ PageIsVerifiedExtended(Page page, BlockNumber blkno, int flags)
 	}
 
 	/* Check all-zeroes case */
-	all_zeroes = true;
 	pagebytes = (size_t *) page;
-	for (i = 0; i < (BLCKSZ / sizeof(size_t)); i++)
-	{
-		if (pagebytes[i] != 0)
-		{
-			all_zeroes = false;
-			break;
-		}
-	}
 
-	if (all_zeroes)
+	if (pg_memory_is_all_zeros(pagebytes, BLCKSZ))
 		return true;
 
 	/*
-- 
2.45.2