Hi David, 2012/06/27 15:16, David Rientjes wrote:
On Wed, 27 Jun 2012, Yasuaki Ishimatsu wrote:Index: linux-3.5-rc4/mm/memory_hotplug.c =================================================================== --- linux-3.5-rc4.orig/mm/memory_hotplug.c 2012-06-26 13:28:16.743211538 +0900 +++ linux-3.5-rc4/mm/memory_hotplug.c 2012-06-26 13:48:38.264940468 +0900 @@ -887,6 +887,11 @@ static int __ref offline_pages(unsigned lock_memory_hotplug(); + if (memory_is_offline(start_pfn, end_pfn)) { + ret = 0; + goto out; + } + zone = page_zone(pfn_to_page(start_pfn)); node = zone_to_nid(zone); nr_pages = end_pfn - start_pfn;Are there additional prerequisites for this patch? Otherwise it changes the return value of offline_memory() which will now call acpi_memory_powerdown_device() in the acpi memhotplug case when disabling. Is that a problem?
I have understood there is a person who expects "offline_pages()" to fail in this case by kosaki's comment. So I'll move memory_is_offline to caller side. Thanks, Yasuaki Ishimatsu
-- 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>
-- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
