The quilt patch titled
Subject: maple_tree: avoid ascending when mas->min is also the parent's minimum
has been removed from the -mm tree. Its filename was
maple_tree-avoid-ascending-when-mas-min-is-also-the-parents-minimum.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: Peng Zhang <zhangpeng.00@xxxxxxxxxxxxx>
Subject: maple_tree: avoid ascending when mas->min is also the parent's minimum
Date: Mon, 20 Nov 2023 15:09:34 +0800
When the child node is the first child of its parent node, mas->min does
not need to be updated. This can reduce the number of ascending times
in some cases.
Link: https://lkml.kernel.org/r/20231120070937.35481-3-zhangpeng.00@xxxxxxxxxxxxx
Signed-off-by: Peng Zhang <zhangpeng.00@xxxxxxxxxxxxx>
Reviewed-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Cc: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/maple_tree.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
--- a/lib/maple_tree.c~maple_tree-avoid-ascending-when-mas-min-is-also-the-parents-minimum
+++ a/lib/maple_tree.c
@@ -1088,14 +1088,16 @@ static int mas_ascend(struct ma_state *m
return 0;
}
- if (!mas->min)
+ min = 0;
+ max = ULONG_MAX;
+ if (!mas->offset) {
+ min = mas->min;
set_min = true;
+ }
if (mas->max == ULONG_MAX)
set_max = true;
- min = 0;
- max = ULONG_MAX;
do {
p_enode = a_enode;
a_type = mas_parent_type(mas, p_enode);
_
Patches currently in -mm which might be from zhangpeng.00@xxxxxxxxxxxxx are
