[PATCHv2] btrfs: list usage cleanup

[zhong jiang]

Trival cleanup, list_move_tail will implement the same function that
list_del() + list_add_tail() will do. hence just replace them.

Signed-off-by: zhong jiang <zhongjiang@xxxxxxxxxx>
---
 fs/btrfs/send.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 094cc144..30e7e12 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -2075,8 +2075,8 @@ static struct name_cache_entry *name_cache_search(struct send_ctx *sctx,
  */
 static void name_cache_used(struct send_ctx *sctx, struct name_cache_entry *nce)
 {
-	list_del(&nce->list);
-	list_add_tail(&nce->list, &sctx->name_cache_list);
+	/* delete from sctx->name_cache_list and add as its tail */
+	list_move_tail(&nce->list, &sctx->name_cache_list);
 }
 
 /*
-- 
1.7.12.4