rpcpipe: switch to ->free_inode()

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

net/sunrpc/rpc_pipe.c

@@ -202,18 +202,11 @@ rpc_alloc_inode(struct super_block *sb)
 }
 
 static void
-rpc_i_callback(struct rcu_head *head)
+rpc_free_inode(struct inode *inode)
 {
-	struct inode *inode = container_of(head, struct inode, i_rcu);
 	kmem_cache_free(rpc_inode_cachep, RPC_I(inode));
 }
 
-static void
-rpc_destroy_inode(struct inode *inode)
-{
-	call_rcu(&inode->i_rcu, rpc_i_callback);
-}
-
 static int
 rpc_pipe_open(struct inode *inode, struct file *filp)
 {
@@ -1123,7 +1116,7 @@ void rpc_remove_cache_dir(struct dentry *dentry)
  */
 static const struct super_operations s_ops = {
 	.alloc_inode	= rpc_alloc_inode,
-	.destroy_inode	= rpc_destroy_inode,
+	.free_inode	= rpc_free_inode,
 	.statfs		= simple_statfs,
 };