0001-Use-list_delete_xxxcell-instead-of-list_delete_ptr.patch

From 5935a26ffaefde5876d226d6d582491724c4433e Mon Sep 17 00:00:00 2001
From: root <root@localhost.localdomain>
Date: Fri, 9 Oct 2020 22:04:24 -0400
Subject: [PATCH] Use list_delete_xxxcell O(1) instead of list_delete_ptr O(N)

---
 src/backend/optimizer/path/joinpath.c | 4 ++--
 src/backend/rewrite/rewriteHandler.c  | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/backend/optimizer/path/joinpath.c b/src/backend/optimizer/path/joinpath.c
index db54a6b..61ef7c8 100644
--- a/src/backend/optimizer/path/joinpath.c
+++ b/src/backend/optimizer/path/joinpath.c
@@ -1005,8 +1005,8 @@ sort_inner_and_outer(PlannerInfo *root,
 		/* Make a pathkey list with this guy first */
 		if (l != list_head(all_pathkeys))
 			outerkeys = lcons(front_pathkey,
-							  list_delete_ptr(list_copy(all_pathkeys),
-											  front_pathkey));
+							  list_delete_nth_cell(list_copy(all_pathkeys),
+												   foreach_current_index(l)));
 		else
 			outerkeys = all_pathkeys;	/* no work at first one... */
 
diff --git a/src/backend/rewrite/rewriteHandler.c b/src/backend/rewrite/rewriteHandler.c
index fe777c3..d0f15b8 100644
--- a/src/backend/rewrite/rewriteHandler.c
+++ b/src/backend/rewrite/rewriteHandler.c
@@ -650,7 +650,7 @@ adjustJoinTreeList(Query *parsetree, bool removert, int rt_index)
 			if (IsA(rtr, RangeTblRef) &&
 				rtr->rtindex == rt_index)
 			{
-				newjointree = list_delete_ptr(newjointree, rtr);
+				newjointree = list_delete_cell(newjointree, l);
 
 				/*
 				 * foreach is safe because we exit loop after list_delete...
-- 
1.8.3.1