pnfsblock: use list_move_tail instead of list_del/list_add_tail

Using list_move_tail() instead of list_del() + list_add_tail().

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

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/blocklayout/extents.c b/fs/nfs/blocklayout/extents.c
index 1f9a6032796b0ff239f2337fae7b656deb71ced6..9c3e117c3ed1f04c5dd1650f70a3aa4ca2fd7d8c 100644 (file)
--- a/fs/nfs/blocklayout/extents.c
+++ b/fs/nfs/blocklayout/extents.c
@@ -683,8 +683,7 @@ encode_pnfs_block_layoutupdate(struct pnfs_block_layout *bl,
                p = xdr_encode_hyper(p, lce->bse_length << SECTOR_SHIFT);
                p = xdr_encode_hyper(p, 0LL);
                *p++ = cpu_to_be32(PNFS_BLOCK_READWRITE_DATA);
-               list_del(&lce->bse_node);
-               list_add_tail(&lce->bse_node, &bl->bl_committing);
+               list_move_tail(&lce->bse_node, &bl->bl_committing);
                bl->bl_count--;
                count++;
        }