Commit 84fd3e1e authored Dec 21, 2022 by Vernon Yang Committed by Andrew Morton Jan 18, 2023

maple_tree: use macro MA_ROOT_PARENT instead of number

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>

parent bd592703

lib/maple_tree.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -503,8 +503,7 @@ static inline unsigned int mte_parent_slot(const struct maple_enode *enode)
		{
		unsigned long val = (unsigned long)mte_to_node(enode)->parent;

		/* Root. */
		if (val & 1)
		if (val & MA_ROOT_PARENT)
		return 0;

		/*