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-rw-r--r--src/include/storage/lockdefs.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/include/storage/lockdefs.h b/src/include/storage/lockdefs.h
index f99ad0eff60..c412ecf1ec8 100644
--- a/src/include/storage/lockdefs.h
+++ b/src/include/storage/lockdefs.h
@@ -45,7 +45,7 @@ typedef int LOCKMODE;
#define AccessExclusiveLock 8 /* ALTER TABLE, DROP TABLE, VACUUM FULL,
* and unqualified LOCK TABLE */
-#define MaxLockMode 8
+#define MaxLockMode 8 /* highest standard lock mode */
/* WAL representation of an AccessExclusiveLock on a table */