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pgsql: Faster PageIsVerified() for the all zeroes case.

From:	Andres Freund <andres(at)anarazel(dot)de>
To:	pgsql-committers(at)postgresql(dot)org
Subject:	pgsql: Faster PageIsVerified() for the all zeroes case.
Date:	2016-09-09 00:22:35
Message-ID:	E1bi9aV-0005L0-LM@gemulon.postgresql.org
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Faster PageIsVerified() for the all zeroes case.

That's primarily useful for testing very large relations, using sparse
files.

Discussion: <20140331101001(dot)GE13135(at)alap3(dot)anarazel(dot)de>
Reviewed-By: Peter Geoghegan

Branch
------
master

Modified Files
--------------
src/backend/storage/page/bufpage.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)

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