linux-kernel - [PATCH 15/20] NFS: drop useless LIST

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Message-Id: <1545555435-24576-16-git-send-email-Julia.Lawall@lip6.fr>
Date:   Sun, 23 Dec 2018 09:57:10 +0100
From:   Julia Lawall <Julia.Lawall@...6.fr>
To:     Trond Myklebust <trond.myklebust@...merspace.com>
Cc:     kernel-janitors@...r.kernel.org,
        Anna Schumaker <anna.schumaker@...app.com>,
        linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 15/20] NFS: drop useless LIST_HEAD

Drop LIST_HEAD where the variable it declares has never
been used.

The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier x;
@@
- LIST_HEAD(x);
  ... when != x
// </smpl>

Fixes: 0e20162ed1e9 ("NFSv4.1 Use MDS auth flavor for data server connection")
Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

---
Successfully 0-day tested on 151 configurations.

 fs/nfs/nfs4client.c |    1 -
 1 file changed, 1 deletion(-)

diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
index 2548405da1f7..735c1056a91c 100644
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c
@@ -145,7 +145,6 @@ static void
 nfs4_shutdown_ds_clients(struct nfs_client *clp)
 {
 	struct nfs4_ds_server *dss;
-	LIST_HEAD(shutdown_list);
 
 	while (!list_empty(&clp->cl_ds_clients)) {
 		dss = list_entry(clp->cl_ds_clients.next,