linux-kernel - [PATCH 06/10] maple_tree: Wrap the replace operation with an inline function.

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Date:   Mon, 15 May 2023 21:17:53 +0800
From:   Peng Zhang <zhangpeng.00@...edance.com>
To:     Liam.Howlett@...cle.com
Cc:     akpm@...ux-foundation.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, maple-tree@...ts.infradead.org,
        Peng Zhang <zhangpeng.00@...edance.com>
Subject: [PATCH 06/10] maple_tree: Wrap the replace operation with an inline function.

To make mas_wr_modify() cleaner, wrap the replace operation with an
inline function.

Signed-off-by: Peng Zhang <zhangpeng.00@...edance.com>
---
 lib/maple_tree.c | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index 4c649d75a4923..ce695adc670ec 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -4288,6 +4288,19 @@ static inline void mas_wr_extend_null(struct ma_wr_state *wr_mas)
 	}
 }
 
+static inline bool mas_wr_replace(struct ma_wr_state *wr_mas)
+{
+	struct ma_state *mas = wr_mas->mas;
+
+	if (wr_mas->r_min == mas->index && wr_mas->r_max == mas->last) {
+		rcu_assign_pointer(wr_mas->slots[mas->offset], wr_mas->entry);
+		if (!!wr_mas->entry ^ !!wr_mas->content)
+			mas_update_gap(mas);
+		return true;
+	}
+	return false;
+}
+
 static inline bool mas_wr_append(struct ma_wr_state *wr_mas)
 {
 	unsigned char end = wr_mas->node_end;
@@ -4347,13 +4360,9 @@ static inline void mas_wr_modify(struct ma_wr_state *wr_mas)
 	unsigned char node_size;
 	struct ma_state *mas = wr_mas->mas;
 
-	/* Direct replacement */
-	if (wr_mas->r_min == mas->index && wr_mas->r_max == mas->last) {
-		rcu_assign_pointer(wr_mas->slots[mas->offset], wr_mas->entry);
-		if (!!wr_mas->entry ^ !!wr_mas->content)
-			mas_update_gap(mas);
+	/* Attempt to direct replace */
+	if (mas_wr_replace(wr_mas))
 		return;
-	}
 
 	/* Attempt to append */
 	node_slots = mt_slots[wr_mas->type];
-- 
2.20.1