linux-kernel - [PATCH] ext4: use rb_entry_safe() instead of open-coding it

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Message-Id: <20190725131658.17187-1-houweitaoo@gmail.com>
Date:   Thu, 25 Jul 2019 21:16:58 +0800
From:   Weitao Hou <houweitaoo@...il.com>
To:     tytso@....edu, adilger.kernel@...ger.ca
Cc:     linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
        Weitao Hou <houweitaoo@...il.com>
Subject: [PATCH] ext4: use rb_entry_safe() instead of open-coding it

use rb_entry_safe() to make it clean

Signed-off-by: Weitao Hou <houweitaoo@...il.com>
---
 fs/ext4/extents_status.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c
index 7521de2dcf3a..08ce5ded3538 100644
--- a/fs/ext4/extents_status.c
+++ b/fs/ext4/extents_status.c
@@ -228,8 +228,7 @@ static struct extent_status *__es_tree_search(struct rb_root *root,
 
 	if (es && lblk > ext4_es_end(es)) {
 		node = rb_next(&es->rb_node);
-		return node ? rb_entry(node, struct extent_status, rb_node) :
-			      NULL;
+		return rb_entry_safe(node, struct extent_status, rb_node);
 	}
 
 	return NULL;
-- 
2.18.0