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pgsql: Fix aboriginal bug in BufFileDumpBuffer that would cause it to

From: tgl(at)postgresql(dot)org (Tom Lane)
To: pgsql-committers(at)postgresql(dot)org
Subject: pgsql: Fix aboriginal bug in BufFileDumpBuffer that would cause it to
Date: 2007-06-01 23:43:23
Message-ID: 20070601234323.323369FC4A3@postgresql.org (view raw or flat)
Thread:
Lists: pgsql-committers
Log Message:
-----------
Fix aboriginal bug in BufFileDumpBuffer that would cause it to write the
wrong data when dumping a bufferload that crosses a component-file boundary.
This probably has not been seen in the wild because (a) component files are
normally 1GB apiece and (b) non-block-aligned buffer usage is relatively
rare.  But it's fairly easy to reproduce a problem if one reduces RELSEG_SIZE
in a test build.  Kudos to Kurt Harriman for spotting the bug.

Tags:
----
REL8_1_STABLE

Modified Files:
--------------
    pgsql/src/backend/storage/file:
        buffile.c (r1.22 -> r1.22.2.1)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/storage/file/buffile.c.diff?r1=1.22&r2=1.22.2.1)

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