The quilt patch titled
Subject: maple_tree: adjust node allocation on mas_rebalance()
has been removed from the -mm tree. Its filename was
maple_tree-adjust-node-allocation-on-mas_rebalance.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@xxxxxxxxxx>
Subject: maple_tree: adjust node allocation on mas_rebalance()
Date: Mon, 24 Jul 2023 14:31:50 -0400
mas_rebalance() is called to rebalance an insufficient node into a
single node or two sufficient nodes. The preallocation estimate is
always too many in this case as the height of the tree will never grow
and there is no possibility to have a three way split in this case, so
revise the node allocation count.
Link: https://lkml.kernel.org/r/20230724183157.3939892-9-Liam.Howlett@xxxxxxxxxx
Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Cc: Peng Zhang <zhangpeng.00@xxxxxxxxxxxxx>
Cc: Suren Baghdasaryan <surenb@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-adjust-node-allocation-on-mas_rebalance
+++ a/lib/maple_tree.c
@@ -3136,7 +3136,7 @@ static inline int mas_rebalance(struct m
* tries to combine the data in the same way. If one node contains the
* entire range of the tree, then that node is used as a new root node.
*/
- mas_node_count(mas, 1 + empty_count * 3);
+ mas_node_count(mas, empty_count * 2 - 1);
if (mas_is_err(mas))
return 0;
_
Patches currently in -mm which might be from Liam.Howlett@xxxxxxxxxx are
maple_tree-add-hex-output-to-maple_arange64-dump.patch
maple_tree-reorder-replacement-of-nodes-to-avoid-live-lock.patch
maple_tree-introduce-mas_put_in_tree.patch
maple_tree-introduce-mas_tree_parent-definition.patch
maple_tree-change-mas_adopt_children-parent-usage.patch
maple_tree-replace-data-before-marking-dead-in-split-and-spanning-store.patch
