Use materialize SRF mode in brin_page_items
This function was using the single-value-per-call mechanism, but the
code relied on a relcache entry that wasn't kept open across calls.
This manifested as weird errors in buildfarm during the short time that
the "brin-1" isolation test lived.
Backpatch to 9.5, where it was introduced.
Branch
------
REL9_5_STABLE
Details
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http://git.postgresql.org/pg/commitdiff/1136971daef209a40eb495b4bd74ce50fbd0fe63
Modified Files
--------------
contrib/pageinspect/brinfuncs.c | 223 ++++++++++++++++++---------------------
1 file changed, 101 insertions(+), 122 deletions(-)
