From: Andres Freund <andres@anarazel.de>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: bufmgr: Change BufferDesc.state to be a 64-bit atomic
Date: Thu, 15 Jan 2026 19:28:47 +0000
Message-ID: <E1vgT1S-000fPY-32@gemulon.postgresql.org> (raw)
bufmgr: Change BufferDesc.state to be a 64-bit atomic
This is motivated by wanting to merge buffer content locks into
BufferDesc.state in a future commit, rather than having a separate lwlock (see
commit c75ebc657ff for more details). As this change is rather mechanical, it
seems to make sense to split it out into a separate commit, for easier review.
Reviewed-by: Melanie Plageman <melanieplageman@gmail.com>
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://postgr.es/m/fvfmkr5kk4nyex56ejgxj3uzi63isfxovp2biecb4bspbjrze7@az2pljabhnff
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/dac328c8a682d38b509b8fd966b280c5f47ea287
Modified Files
--------------
contrib/pg_buffercache/pg_buffercache_pages.c | 8 +-
contrib/pg_prewarm/autoprewarm.c | 2 +-
src/backend/storage/buffer/buf_init.c | 2 +-
src/backend/storage/buffer/bufmgr.c | 170 +++++++++++++-------------
src/backend/storage/buffer/freelist.c | 24 ++--
src/backend/storage/buffer/localbuf.c | 72 +++++------
src/include/storage/buf_internals.h | 51 ++++----
src/include/storage/procnumber.h | 14 +--
src/test/modules/test_aio/test_aio.c | 12 +-
9 files changed, 179 insertions(+), 176 deletions(-)
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To: pgsql-committers@postgresql.org
Cc: andres@anarazel.de, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: bufmgr: Change BufferDesc.state to be a 64-bit atomic
In-Reply-To: <E1vgT1S-000fPY-32@gemulon.postgresql.org>
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