The quilt patch titled
Subject: maple_tree: only root node could be deficient
has been removed from the -mm tree. Its filename was
maple_tree-only-root-node-could-be-deficient.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@xxxxxxxxx>
Subject: maple_tree: only root node could be deficient
Date: Wed, 13 Nov 2024 03:16:16 +0000
Each level's rightmost node should have (max == ULONG_MAX). This means
current validation skips the right most node on each level.
Only the root node may be below the minimum data threshold.
Link: https://lkml.kernel.org/r/20241113031616.10530-4-richard.weiyang@xxxxxxxxx
Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxx>
Reviewed-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Cc: Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx>
Cc: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/maple_tree.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/lib/maple_tree.c~maple_tree-only-root-node-could-be-deficient
+++ a/lib/maple_tree.c
@@ -7556,7 +7556,7 @@ void mt_validate(struct maple_tree *mt)
MAS_WARN_ON(&mas, mte_dead_node(mas.node));
end = mas_data_end(&mas);
if (MAS_WARN_ON(&mas, (end < mt_min_slot_count(mas.node)) &&
- (mas.max != ULONG_MAX))) {
+ (!mte_is_root(mas.node)))) {
pr_err("Invalid size %u of " PTR_FMT "\n",
end, mas_mn(&mas));
}
_
Patches currently in -mm which might be from richard.weiyang@xxxxxxxxx are
