The patch titled
Subject: maple_tree: not necessary to check index/last again
has been added to the -mm mm-unstable branch. Its filename is
maple_tree-not-necessary-to-check-index-last-again.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/maple_tree-not-necessary-to-check-index-last-again.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Wei Yang <richard.weiyang@xxxxxxxxx>
Subject: maple_tree: not necessary to check index/last again
Date: Tue, 15 Oct 2024 23:39:08 +0000
Patch series "fix mas_new_root()".
When overwriting the whole range with NULL, current behavior is not correct.
This patch (of 2):
Before calling mas_new_root(), the range has been checked.
Link: https://lkml.kernel.org/r/20241015233909.23592-1-richard.weiyang@xxxxxxxxx
Link: https://lkml.kernel.org/r/20241015233909.23592-2-richard.weiyang@xxxxxxxxx
Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxx>
Cc: 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-not-necessary-to-check-index-last-again
+++ a/lib/maple_tree.c
@@ -3670,7 +3670,7 @@ static inline void mas_new_root(struct m
void __rcu **slots;
unsigned long *pivots;
- if (!entry && !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@xxxxxxxxx are
maple_tree-i-is-always-less-than-or-equal-to-mas_end.patch
maple_tree-goto-complete-directly-on-a-pivot-of-0.patch
maple_tree-remove-maple_big_nodeparent.patch
maple_tree-memset-maple_big_node-as-a-whole.patch
maple_tree-root-node-could-be-handled-by-p_slot-too.patch
maple_tree-clear-request_count-for-new-allocated-one.patch
maple_tree-total-is-not-changed-for-nomem_one-case.patch
maple_tree-simplify-mas_push_node.patch
maple_tree-not-necessary-to-check-index-last-again.patch
maple_tree-one-single-entry-couldnt-represent-the-whole-range.patch
