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Message-Id: <20240628142229.69419-1-zxcvb600870024@gmail.com>
Date: Fri, 28 Jun 2024 22:22:29 +0800
From: Hsin Chang Yu <zxcvb600870024@...il.com>
To: akpm@...ux-foundation.org
Cc: linux-kernel@...r.kernel.org,
	Hsin Chang Yu <zxcvb600870024@...il.com>
Subject: [PATCH] Fix the example typo

Replace the "Sr" with "sr", the example is wrong if sl and N don't
have child nodes, so sr should be red node.

Signed-off-by: Hsin Chang Yu <zxcvb600870024@...il.com>
---
 lib/rbtree.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/rbtree.c b/lib/rbtree.c
index 5114eda63..989c2d615 100644
--- a/lib/rbtree.c
+++ b/lib/rbtree.c
@@ -297,9 +297,9 @@ ____rb_erase_color(struct rb_node *parent, struct rb_root *root,
 				 *   / \           / \
 				 *  N   S    -->  N   sl
 				 *     / \             \
-				 *    sl  Sr            S
+				 *    sl  sr            S
 				 *                       \
-				 *                        Sr
+				 *                        sr
 				 *
 				 * Note: p might be red, and then both
 				 * p and sl are red after rotation(which
@@ -312,9 +312,9 @@ ____rb_erase_color(struct rb_node *parent, struct rb_root *root,
 				 *   / \            /  \
 				 *  N   sl   -->   P    S
 				 *       \        /      \
-				 *        S      N        Sr
+				 *        S      N        sr
 				 *         \
-				 *          Sr
+				 *          sr
 				 */
 				tmp1 = tmp2->rb_right;
 				WRITE_ONCE(sibling->rb_left, tmp1);
-- 
2.34.1


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