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aio: Fix configuration reload in IO workers.

Browse source 
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
This commit is contained in:
Thomas Munro 2025-07-12 16:20:11 +12:00
parent b4c19da93a
commit 7d11f36e71
1 changed files with 6 additions and 0 deletions
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6
src/backend/storage/aio/method_worker.c
View file

@ -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;