The patch titled
Subject: maple_tree: don't set a new maximum on the node when not reusing nodes
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
maple_tree-dont-set-a-new-maximum-on-the-node-when-not-reusing-nodes.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/maple_tree-dont-set-a-new-maximum-on-the-node-when-not-reusing-nodes.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Liam Howlett <liam.howlett@xxxxxxxxxx>
Subject: maple_tree: don't set a new maximum on the node when not reusing nodes
Date: Mon, 7 Nov 2022 16:39:02 +0000
In RCU mode, the node limits were being updated to the last pivot which
may not be correct and would cause the metadata to be set when it
shouldn't. Fix this by not setting a new limit in this case.
Link: https://lkml.kernel.org/r/20221107163857.867377-1-Liam.Howlett@xxxxxxxxxx
Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/maple_tree.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/lib/maple_tree.c~maple_tree-dont-set-a-new-maximum-on-the-node-when-not-reusing-nodes
+++ a/lib/maple_tree.c
@@ -3603,8 +3603,7 @@ static inline int mas_commit_b_node(stru
node = mas_pop_node(wr_mas->mas);
node->parent = mas_mn(wr_mas->mas)->parent;
wr_mas->mas->node = mt_mk_node(node, b_type);
- mab_mas_cp(b_node, 0, b_end, wr_mas->mas, true);
-
+ mab_mas_cp(b_node, 0, b_end, wr_mas->mas, false);
mas_replace(wr_mas->mas, false);
reuse_node:
mas_update_gap(wr_mas->mas);
_
Patches currently in -mm which might be from liam.howlett@xxxxxxxxxx are
maple_tree-remove-pointer-to-pointer-use-in-mas_alloc_nodes.patch
maple_tree-mas_anode_descend-clang-analyzer-clean-up.patch
maple_tree-reorganize-testing-to-restore-module-testing.patch
maple_tree-fix-depth-tracking-in-maple_state.patch
maple_tree-dont-set-a-new-maximum-on-the-node-when-not-reusing-nodes.patch
maple_tree-fix-mas_find_rev-comment.patch
maple_tree-update-copyright-dates-for-test-code.patch
maple_tree-mte_set_full-and-mte_clear_full-clang-analyzer-clean-up.patch
