1 files changed, 11 insertions, 11 deletions

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 6717200923fe..d2d67781c579 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -683,9 +683,12 @@ static int nfs_show_stats(struct seq_file *m, struct vfsmount *mnt)
  */
 static void nfs_umount_begin(struct super_block *sb)
 {
-        struct nfs_server *server = NFS_SB(sb);
+        struct nfs_server *server;
         struct rpc_clnt *rpc;
 
+        lock_kernel();
+
+        server = NFS_SB(sb);
         /* -EIO all pending I/O */
         rpc = server->client_acl;
         if (!IS_ERR(rpc))
@@ -693,6 +696,8 @@ static void nfs_umount_begin(struct super_block *sb)
         rpc = server->client;
         if (!IS_ERR(rpc))
                 rpc_killall_tasks(rpc);
+
+        unlock_kernel();
 }
 
 /*
@@ -2106,8 +2111,7 @@ out_err_nosb:
 error_splat_root:
         dput(mntroot);
 error_splat_super:
-        up_write(&s->s_umount);
-        deactivate_super(s);
+        deactivate_locked_super(s);
         goto out;
 }
 
@@ -2203,8 +2207,7 @@ out_err_noserver:
         return error;
 
 error_splat_super:
-        up_write(&s->s_umount);
-        deactivate_super(s);
+        deactivate_locked_super(s);
         dprintk("<-- nfs_xdev_get_sb() = %d [splat]\n", error);
         return error;
 }
@@ -2464,8 +2467,7 @@ out_free:
 error_splat_root:
         dput(mntroot);
 error_splat_super:
-        up_write(&s->s_umount);
-        deactivate_super(s);
+        deactivate_locked_super(s);
         goto out;
 }
 
@@ -2559,8 +2561,7 @@ out_err_noserver:
         return error;
 
 error_splat_super:
-        up_write(&s->s_umount);
-        deactivate_super(s);
+        deactivate_locked_super(s);
         dprintk("<-- nfs4_xdev_get_sb() = %d [splat]\n", error);
         return error;
 }
@@ -2644,8 +2645,7 @@ out_err_noserver:
         return error;
 
 error_splat_super:
-        up_write(&s->s_umount);
-        deactivate_super(s);
+        deactivate_locked_super(s);
         dprintk("<-- nfs4_referral_get_sb() = %d [splat]\n", error);
         return error;
 }