On Wed, 7 Jan 2009, Linus Torvalds wrote: > On Wed, 7 Jan 2009, Dave Kleikamp wrote: > > > > Do you need to even do that if CONFIG_DEBUG_PAGEALLOC is unset? > > No. > > > Something like: > > > > #ifdef CONFIG_DEBUG_PAGEALLOC > > /* > > * Need to access the cpu field knowing that > > * DEBUG_PAGEALLOC could have unmapped it if > > * the mutex owner just released it and exited. > > */ > > if (probe_kernel_address(&thread->cpu, cpu)) > > break; > > #else > > cpu = thread->cpu; > > #endif > > yes. That would work fine. What about memory hotplug as Ingo mentioned? Should that be: #if defined(CONFIG_DEBUG_PAGEALLOC) || defined(CONFIG_MEMORY_HOTPLUG) ?? -- 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
