On Wed, 7 Jan 2009, Linus Torvalds wrote: > > Should that be: > > > > #if defined(CONFIG_DEBUG_PAGEALLOC) || defined(CONFIG_MEMORY_HOTPLUG) > > Well, probably CONFIG_MEMORY_HOTREMOVE, no? And I'd actually suggest that > unplugging should have a stop-machine if it doesn't already, just because > it's such a special case - like module removal. I do not think stop-machine will help, unless that spinning is protected by preempt-disable. If the task gets preempted after grabbing the owner thread_info, and then stop-machine runs, the memory disappears, the task is scheduled back, accesses the owner thread_info and then page-fault. -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
