Improve comment.

diff --git a/src/backend/access/gin/ginxlog.c b/src/backend/access/gin/ginxlog.c
index 94051aa1c3dcf4e15aa388d65f29447b9ddbbabe..388589beac33bb8d158b2ba43921e3c7ec1e338b 100644 (file)
--- a/src/backend/access/gin/ginxlog.c
+++ b/src/backend/access/gin/ginxlog.c
@@ -671,9 +671,10 @@ gin_redo(XLogRecPtr lsn, XLogRecord *record)
    uint8       info = record->xl_info & ~XLR_INFO_MASK;
 
    /*
-    * GIN indexes do not require any conflict processing.
+    * GIN indexes do not require any conflict processing. NB: If we ever
+    * implement a similar optimization as we have in b-tree, and remove
+    * killed tuples outside VACUUM, we'll need to handle that here.
     */
-
    RestoreBkpBlocks(lsn, record, false);
 
    topCtx = MemoryContextSwitchTo(opCtx);