linux-kernel - [PATCH] JFS: use list_move instead of list_del/list

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Date:	Thu, 6 Sep 2012 15:33:09 +0800
From:	Wei Yongjun <weiyj.lk@...il.com>
To:	shaggy@...nel.org
Cc:	yongjun_wei@...ndmicro.com.cn,
	jfs-discussion@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: [PATCH] JFS: use list_move instead of list_del/list_add

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

Using list_move() instead of list_del() + list_add().

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
---
 fs/jfs/jfs_txnmgr.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/fs/jfs/jfs_txnmgr.c b/fs/jfs/jfs_txnmgr.c
index bb8b661..5fcc02e 100644
--- a/fs/jfs/jfs_txnmgr.c
+++ b/fs/jfs/jfs_txnmgr.c
@@ -2977,12 +2977,9 @@ int jfs_sync(void *arg)
 				 * put back on the anon_list.
 				 */
 
-				/* Take off anon_list */
-				list_del(&jfs_ip->anon_inode_list);
-
-				/* Put on anon_list2 */
-				list_add(&jfs_ip->anon_inode_list,
-					 &TxAnchor.anon_list2);
+				/* Move from anon_list to anon_list2 */
+				list_move(&jfs_ip->anon_inode_list,
+					  &TxAnchor.anon_list2);
 
 				TXN_UNLOCK();
 				iput(ip);

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