fat: switch to ->free_inode()

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

fs/fat/inode.c

@@ -746,17 +746,11 @@ static struct inode *fat_alloc_inode(struct super_block *sb)
 	return &ei->vfs_inode;
 }
 
-static void fat_i_callback(struct rcu_head *head)
+static void fat_free_inode(struct inode *inode)
 {
-	struct inode *inode = container_of(head, struct inode, i_rcu);
 	kmem_cache_free(fat_inode_cachep, MSDOS_I(inode));
 }
 
-static void fat_destroy_inode(struct inode *inode)
-{
-	call_rcu(&inode->i_rcu, fat_i_callback);
-}
-
 static void init_once(void *foo)
 {
 	struct msdos_inode_info *ei = (struct msdos_inode_info *)foo;
@@ -920,7 +914,7 @@ EXPORT_SYMBOL_GPL(fat_sync_inode);
 static int fat_show_options(struct seq_file *m, struct dentry *root);
 static const struct super_operations fat_sops = {
 	.alloc_inode	= fat_alloc_inode,
-	.destroy_inode	= fat_destroy_inode,
+	.free_inode	= fat_free_inode,
 	.write_inode	= fat_write_inode,
 	.evict_inode	= fat_evict_inode,
 	.put_super	= fat_put_super,