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* [merged mm-stable] maple_tree-not-necessary-to-check-index-last-again.patch removed from -mm tree
@ 2024-11-11  8:28 Andrew Morton
  0 siblings, 0 replies; only message in thread
From: Andrew Morton @ 2024-11-11  8:28 UTC (permalink / raw)
  To: mm-commits, sidhartha.kumar, lorenzo.stoakes, Liam.Howlett,
	richard.weiyang, akpm


The quilt patch titled
     Subject: maple_tree: not necessary to check index/last again
has been removed from the -mm tree.  Its filename was
     maple_tree-not-necessary-to-check-index-last-again.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: Wei Yang <richard.weiyang@gmail.com>
Subject: maple_tree: not necessary to check index/last again
Date: Thu, 31 Oct 2024 23:16:25 +0000

Before calling mas_new_root(), the range has been checked.

Link: https://lkml.kernel.org/r/20241031231627.14316-4-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Cc: Liam R. Howlett <Liam.Howlett@Oracle.com>
Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/maple_tree.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/lib/maple_tree.c~maple_tree-not-necessary-to-check-index-last-again
+++ a/lib/maple_tree.c
@@ -3670,7 +3670,9 @@ static inline void mas_new_root(struct m
 	void __rcu **slots;
 	unsigned long *pivots;
 
-	if (!entry && !mas->index && mas->last == ULONG_MAX) {
+	WARN_ON_ONCE(mas->index || mas->last != ULONG_MAX);
+
+	if (!entry) {
 		mas->depth = 0;
 		mas_set_height(mas);
 		rcu_assign_pointer(mas->tree->ma_root, entry);
_

Patches currently in -mm which might be from richard.weiyang@gmail.com are



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2024-11-11  8:28 [merged mm-stable] maple_tree-not-necessary-to-check-index-last-again.patch removed from -mm tree Andrew Morton

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