GucContext of log_autovacuum

The GucContext of log_autovacuum is PGC_BACKEND in the CVS HEAD,
but should it be PGC_SIGHUP? We cannot modify the variable on-the-fly
because the parameter is used only by autovacuum worker processes.
The similar variables, like autovacuum_vacuum_scale_factor, are
defined as PGC_SIGHUP.

Index: src/backend/utils/misc/guc.c
===================================================================
--- src/backend/utils/misc/guc.c (head)
+++ src/backend/utils/misc/guc.c (working copy)
@@ -1552,7 +1552,7 @@
},

{
- {"log_autovacuum", PGC_BACKEND, LOGGING_WHAT,
+ {"log_autovacuum", PGC_SIGHUP, LOGGING_WHAT,
gettext_noop("Sets the minimum execution time above which autovacuum actions "
"will be logged."),
gettext_noop("Zero prints all actions. The default is -1 (turning this feature off)."),

Regards,
---
ITAGAKI Takahiro
NTT Open Source Software Center