Clarify what is protected by WaitLSNLock Not just WaitLSNState.waitersHeap, but also WaitLSNState.procInfos and updating of WaitLSNState.minWaitedLSN is protected by WaitLSNLock. There is one now documented exclusion on fast-path checking of WaitLSNProcInfo.inHeap flag.
Discussion: https://postgr.es/m/202404030658.hhj3vfxeyhft%40alvherre.pgsql Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/ee79928441e7e291532b833455ebfee27d7cab5c Modified Files -------------- src/backend/commands/waitlsn.c | 10 ++++++++-- src/include/commands/waitlsn.h | 7 +++++-- 2 files changed, 13 insertions(+), 4 deletions(-)