[merged mm-stable] maple_tree-change-rcu-checks-to-warn_on-instead-of-bug_on.patch removed from -mm tree

[merged mm-stable] maple_tree-change-rcu-checks-to-warn_on-instead-of-bug_on.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: maple_tree: change RCU checks to WARN_ON() instead of BUG_ON()
has been removed from the -mm tree.  Its filename was
     maple_tree-change-rcu-checks-to-warn_on-instead-of-bug_on.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: "Liam R. Howlett" <Liam.Howlett@Oracle.com>
Subject: maple_tree: change RCU checks to WARN_ON() instead of BUG_ON()
Date: Thu, 18 May 2023 10:55:17 -0400

If RCU is enabled and the tree isn't locked, just warn the user and avoid
crashing the kernel.

Link: https://lkml.kernel.org/r/20230518145544.1722059-9-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: David Binderman <dcb314@hotmail.com>
Cc: Peng Zhang <zhangpeng.00@bytedance.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Vernon Yang <vernon2gm@gmail.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/maple_tree.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/include/linux/maple_tree.h~maple_tree-change-rcu-checks-to-warn_on-instead-of-bug_on
+++ a/include/linux/maple_tree.h
@@ -616,7 +616,7 @@ static inline void mt_clear_in_rcu(struc
 		return;
 
 	if (mt_external_lock(mt)) {
-		BUG_ON(!mt_lock_is_held(mt));
+		WARN_ON(!mt_lock_is_held(mt));
 		mt->ma_flags &= ~MT_FLAGS_USE_RCU;
 	} else {
 		mtree_lock(mt);
@@ -635,7 +635,7 @@ static inline void mt_set_in_rcu(struct
 		return;
 
 	if (mt_external_lock(mt)) {
-		BUG_ON(!mt_lock_is_held(mt));
+		WARN_ON(!mt_lock_is_held(mt));
 		mt->ma_flags |= MT_FLAGS_USE_RCU;
 	} else {
 		mtree_lock(mt);
_

Patches currently in -mm which might be from Liam.Howlett@Oracle.com are