> The merge processing occurs during kmem_cache_create and you are setting > up the decoder field afterwards! Wont work. In the thread I suggested providing the callback at destruction: http://www.mail-archive.com/linux-btrfs@xxxxxxxxxxxxxxx/msg21130.html I liked that it limits accesibility of the callback to the only path that uses it. - z -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>