In 5e89985928
I made StrategyGetBuffer() pin buffers with a single CAS,
instead of using PinBuffer_Locked(). Unfortunately I missed that
PinBuffer_Locked() marked the page as defined for valgrind.
Fix this oversight by centralizing the valgrind initialization into
TrackNewBufferPin(), which also allows us to reduce the number of places doing
VALGRIND_MAKE_MEM_DEFINED.
Per buildfarm animal skink and Amit Langote.
Discussion: https://postgr.es/m/fvfmkr5kk4nyex56ejgxj3uzi63isfxovp2biecb4bspbjrze7@az2pljabhnff
Discussion: https://postgr.es/m/CA+HiwqGKJ6nEXEPQW7EpykVsEtzxp5-up_xhtcUAkWFtATVQvQ@mail.gmail.com
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
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General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
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