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(parent: b8a1bdc) | patch
Use LW_SHARED in walsummarizer.c for WALSummarizerLock lock where possible.
authorMasahiko Sawada <msawada@postgresql.org>
Fri, 29 Aug 2025 00:06:42 +0000 (17:06 -0700)
committerMasahiko Sawada <msawada@postgresql.org>
Fri, 29 Aug 2025 00:06:42 +0000 (17:06 -0700)
commitfabd8b8e2a72bac9e5a361856a355bd5bb2e61b8
tree4773a24c6affe21a0c0e548a60e24e921de75acetree
parentb8a1bdc458e3e81898a1fe3d26188bc1dcbac965commit | diff
Use LW_SHARED in walsummarizer.c for WALSummarizerLock lock where possible.

Previously, we used LW_EXCLUSIVE in several places despite only reading
WalSummarizerCtl fields. This patch reduces the lock level to LW_SHARED
where we are only reading the shared fields.

Backpatch to 17, where wal summarization was introduced.

Reviewed-by: Nathan Bossart <nathandbossart@gmail.com>
Discussion: https://postgr.es/m/CAD21AoDdKhf_9oriEYxY-JCdF+Oe_muhca3pcdkMEdBMzyHyKw@mail.gmail.com
Backpatch-through: 17
src/backend/postmaster/walsummarizer.c diff | blob | blame | history
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