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authorRobert Haas <rhaas@postgresql.org>2015-08-04 12:58:54 -0400
committerRobert Haas <rhaas@postgresql.org>2015-08-04 13:05:48 -0400
commit3a35ca5add65fb58bda52d62695a5b83cd6c0ae7 (patch)
treea7e39e8760118b3c005c9dac4e05928a58e2c942 /src/backend/access/gist/gistxlog.c
parent4424356c033d4f10f7f0d18f2835f219ee09c8c0 (diff)
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Cap wal_buffers to avoid a server crash when it's set very large.
It must be possible to multiply wal_buffers by XLOG_BLCKSZ without overflowing int, or calculations in StartupXLOG will go badly wrong and crash the server. Avoid that by imposing a maximum value on wal_buffers. This will be just under 2GB, assuming the usual value for XLOG_BLCKSZ. Josh Berkus, per an analysis by Andrew Gierth.
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