ecryptfs: make use of ->free_inode()

no idea if crypto destruction could be moved there as well
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

fs/ecryptfs/super.c

@@ -67,9 +67,8 @@ static struct inode *ecryptfs_alloc_inode(struct super_block *sb)
 	return inode;
 }
 
-static void ecryptfs_i_callback(struct rcu_head *head)
+static void ecryptfs_free_inode(struct inode *inode)
 {
-	struct inode *inode = container_of(head, struct inode, i_rcu);
 	struct ecryptfs_inode_info *inode_info;
 	inode_info = ecryptfs_inode_to_private(inode);
 
@@ -92,7 +91,6 @@ static void ecryptfs_destroy_inode(struct inode *inode)
 	inode_info = ecryptfs_inode_to_private(inode);
 	BUG_ON(inode_info->lower_file);
 	ecryptfs_destroy_crypt_stat(&inode_info->crypt_stat);
-	call_rcu(&inode->i_rcu, ecryptfs_i_callback);
 }
 
 /**
@@ -186,6 +184,7 @@ static int ecryptfs_show_options(struct seq_file *m, struct dentry *root)
 const struct super_operations ecryptfs_sops = {
 	.alloc_inode = ecryptfs_alloc_inode,
 	.destroy_inode = ecryptfs_destroy_inode,
+	.free_inode = ecryptfs_free_inode,
 	.statfs = ecryptfs_statfs,
 	.remount_fs = NULL,
 	.evict_inode = ecryptfs_evict_inode,