From 7d11f36e71a97603802c6a3dd019e206729a80c7 Mon Sep 17 00:00:00 2001 From: Thomas Munro Date: Sat, 12 Jul 2025 16:20:11 +1200 Subject: [PATCH] aio: Fix configuration reload in IO workers. method_worker.c installed SignalHandlerForConfigReload, but it failed to actually process reload requests. That hasn't yet produced any concrete problem reports in terms of GUC changes it should have cared about in v18, but it was inconsistent. It did cause problems for a couple of patches in development that need IO workers to react to ALTER SYSTEM + pg_reload_conf(). Fix extracted from one of those patches. Back-patch to 18. Reported-by: Dmitry Dolgov <9erthalion6@gmail.com> Discussion: https://postgr.es/m/sh5uqe4a4aqo5zkkpfy5fobe2rg2zzouctdjz7kou4t74c66ql%40yzpkxb7pgoxf --- src/backend/storage/aio/method_worker.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/backend/storage/aio/method_worker.c b/src/backend/storage/aio/method_worker.c index 1ce1bcd57a0..bf8f77e6ff6 100644 --- a/src/backend/storage/aio/method_worker.c +++ b/src/backend/storage/aio/method_worker.c @@ -575,6 +575,12 @@ IoWorkerMain(const void *startup_data, size_t startup_data_len) } CHECK_FOR_INTERRUPTS(); + + if (ConfigReloadPending) + { + ConfigReloadPending = false; + ProcessConfigFile(PGC_SIGHUP); + } } error_context_stack = errcallback.previous; -- 2.39.5