+ maple_tree-use-macro-ma_root_parent-instead-of-number.patch added to mm-unstable branch

+ maple_tree-use-macro-ma_root_parent-instead-of-number.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: maple_tree: use macro MA_ROOT_PARENT instead of number
has been added to the -mm mm-unstable branch.  Its filename is
     maple_tree-use-macro-ma_root_parent-instead-of-number.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/maple_tree-use-macro-ma_root_parent-instead-of-number.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Vernon Yang <vernon2gm@gmail.com>
Subject: maple_tree: use macro MA_ROOT_PARENT instead of number
Date: Wed, 21 Dec 2022 14:00:55 +0800

When you need to compare whether node->parent is parent of the
root node, using macro MA_ROOT_PARENT is easier to understand
and for better readability.

Link: https://lkml.kernel.org/r/20221221060058.609003-5-vernon2gm@gmail.com
Signed-off-by: Vernon Yang <vernon2gm@gmail.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/maple_tree.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/lib/maple_tree.c~maple_tree-use-macro-ma_root_parent-instead-of-number
+++ a/lib/maple_tree.c
@@ -503,8 +503,7 @@ static inline unsigned int mte_parent_sl
 {
 	unsigned long val = (unsigned long)mte_to_node(enode)->parent;
 
-	/* Root. */
-	if (val & 1)
+	if (val & MA_ROOT_PARENT)
 		return 0;
 
 	/*
_

Patches currently in -mm which might be from vernon2gm@gmail.com are

maple_tree-remove-extra-space-and-blank-line.patch
maple_tree-remove-extra-return-statement.patch
maple_tree-use-mt_node_max-instead-of-direct-operations-mt_max.patch
maple_tree-use-macro-ma_root_parent-instead-of-number.patch
maple_tree-remove-the-redundant-code.patch
maple_tree-refine-ma_state-init-from-mas_start.patch
maple_tree-refine-mab_calc_split-function.patch