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author | Robert Haas <rhaas@postgresql.org> | 2015-08-04 12:58:54 -0400 |
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committer | Robert Haas <rhaas@postgresql.org> | 2015-08-04 13:05:48 -0400 |
commit | 3a35ca5add65fb58bda52d62695a5b83cd6c0ae7 (patch) | |
tree | a7e39e8760118b3c005c9dac4e05928a58e2c942 /src/backend/access/gist/gistxlog.c | |
parent | 4424356c033d4f10f7f0d18f2835f219ee09c8c0 (diff) | |
download | postgresql-3a35ca5add65fb58bda52d62695a5b83cd6c0ae7.tar.gz postgresql-3a35ca5add65fb58bda52d62695a5b83cd6c0ae7.zip |
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.
Diffstat (limited to 'src/backend/access/gist/gistxlog.c')
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