Fix autovacuum_vacuum_max_threshold's GUC description.

Most GUCs that accept a special value to disable the feature
mention it in their GUC description.  This commit adds that
information to autovacuum_vacuum_max_threshold's description.

Oversight in commit 306dc520b9.

diff --git a/src/backend/utils/misc/guc_tables.c b/src/backend/utils/misc/guc_tables.c
index b887d3e59839877745b98457a055c0459126ba8e..ce7534d4d23a929fa2a1d2097bf50e0d980168c5 100644 (file)
--- a/src/backend/utils/misc/guc_tables.c
+++ b/src/backend/utils/misc/guc_tables.c
@@ -3428,7 +3428,7 @@ struct config_int ConfigureNamesInt[] =
        },
        {
                {"autovacuum_vacuum_max_threshold", PGC_SIGHUP, VACUUM_AUTOVACUUM,
-                       gettext_noop("Maximum number of tuple updates or deletes prior to vacuum."),
+                       gettext_noop("Maximum number of tuple updates or deletes prior to vacuum, or -1 to disable maximum threshold."),
                        NULL
                },
                &autovacuum_vac_max_thresh,