The patch-set was divided from following thread's patch-set. https://lkml.org/lkml/2012/9/5/201 If you want to know the reason, please read following thread. https://lkml.org/lkml/2012/10/2/83 The patch exports "acpi_bus_remove()" for removing a acpi device from a acpi bus at memory hot plug. -- 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>