linux-kernel - [PATCH 06/13] btrfs: update insert_block

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Message-Id: <20250422081504.1998809-6-frank.li@vivo.com>
Date: Tue, 22 Apr 2025 02:14:57 -0600
From: Yangtao Li <frank.li@...o.com>
To: clm@...com,
	josef@...icpanda.com,
	dsterba@...e.com
Cc: linux-btrfs@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Yangtao Li <frank.li@...o.com>
Subject: [PATCH 06/13] btrfs: update insert_block_entry to to use rb helper

Update insert_block_entry() to use rb_find_add().

Suggested-by: David Sterba <dsterba@...e.com>
Signed-off-by: Yangtao Li <frank.li@...o.com>
---
 fs/btrfs/ref-verify.c | 28 +++++++++++-----------------
 1 file changed, 11 insertions(+), 17 deletions(-)

diff --git a/fs/btrfs/ref-verify.c b/fs/btrfs/ref-verify.c
index 6445c7d9a7b1..6113f325df82 100644
--- a/fs/btrfs/ref-verify.c
+++ b/fs/btrfs/ref-verify.c
@@ -89,27 +89,21 @@ static int block_entry_key_cmp(const void *k, const struct rb_node *node)
 	return 0;
 }
 
+static int block_entry_cmp(struct rb_node *new, const struct rb_node *exist)
+{
+	const struct block_entry *new_entry =
+		rb_entry(new, struct block_entry, node);
+
+	return block_entry_key_cmp(&new_entry->bytenr, exist);
+}
+
 static struct block_entry *insert_block_entry(struct rb_root *root,
 					      struct block_entry *be)
 {
-	struct rb_node **p = &root->rb_node;
-	struct rb_node *parent_node = NULL;
-	struct block_entry *entry;
+	struct rb_node *exist;
 
-	while (*p) {
-		parent_node = *p;
-		entry = rb_entry(parent_node, struct block_entry, node);
-		if (entry->bytenr > be->bytenr)
-			p = &(*p)->rb_left;
-		else if (entry->bytenr < be->bytenr)
-			p = &(*p)->rb_right;
-		else
-			return entry;
-	}
-
-	rb_link_node(&be->node, parent_node, p);
-	rb_insert_color(&be->node, root);
-	return NULL;
+	exist = rb_find_add(&be->node, root, block_entry_cmp);
+	return rb_entry_safe(exist, struct block_entry, node);
 }
 
 static struct block_entry *lookup_block_entry(struct rb_root *root, u64 bytenr)
-- 
2.39.0