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

[Weitao Hou <houweitaoo@xxxxxxxxx>]

use rb_entry_safe() to make it clean

Signed-off-by: Weitao Hou <houweitaoo@xxxxxxxxx>
---
 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