mqueue: switch to ->free_inode()

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

ipc/mqueue.c

@@ -419,17 +419,11 @@ static struct inode *mqueue_alloc_inode(struct super_block *sb)
 	return &ei->vfs_inode;
 }
 
-static void mqueue_i_callback(struct rcu_head *head)
+static void mqueue_free_inode(struct inode *inode)
 {
-	struct inode *inode = container_of(head, struct inode, i_rcu);
 	kmem_cache_free(mqueue_inode_cachep, MQUEUE_I(inode));
 }
 
-static void mqueue_destroy_inode(struct inode *inode)
-{
-	call_rcu(&inode->i_rcu, mqueue_i_callback);
-}
-
 static void mqueue_evict_inode(struct inode *inode)
 {
 	struct mqueue_inode_info *info;
@@ -1562,7 +1556,7 @@ static const struct file_operations mqueue_file_operations = {
 
 static const struct super_operations mqueue_super_ops = {
 	.alloc_inode = mqueue_alloc_inode,
-	.destroy_inode = mqueue_destroy_inode,
+	.free_inode = mqueue_free_inode,
 	.evict_inode = mqueue_evict_inode,
 	.statfs = simple_statfs,
 };