git.postgresql.org Git - postgresql.git/commitdiff

diff --git a/src/backend/access/nbtree/nbtinsert.c b/src/backend/access/nbtree/nbtinsert.c

index e3a44bc09e021a6c4966875f9d6f9f7e9f0039e8..d36f7557c87c8f27cd5884628cba8d8fb9c52aaa 100644 (file)

--- a/src/backend/access/nbtree/nbtinsert.c

+++ b/src/backend/access/nbtree/nbtinsert.c

}

/*

- * We have to grab the right sibling (if any) and fix the prev pointer

- * there. We are guaranteed that this is deadlock-free since no other

- * writer will be holding a lock on that page and trying to move left, and

- * all readers release locks on a page before trying to fetch its

- * neighbors.

+ * We have to grab the original right sibling (if any) and update its prev

+ * link. We are guaranteed that this is deadlock-free, since we couple

+ * the locks in the standard order: left to right.

*/

if (!isrightmost)

{