Re: [PATCH 3/3] memory-hotplug: bug fix race between isolation and allocation

2012/9/5 Minchan Kim : > Like below, memory-hotplug makes race between page-isolation > and page-allocation so it can hit BUG_ON in __offline_isolated_pages. > > CPU A CPU B > > start_isolate_page_range > set_migratetype_isolate > spin_lock_irqsave(zone->lo

Re: [RFC PATCH v5 12/19] memory-hotplug: introduce new function arch_remove_memory()

2012/7/27 Wen Congyang : > We don't call __add_pages() directly in the function add_memory() > because some other architecture related things need to be done > before or after calling __add_pages(). So we should introduce > a new function arch_remove_memory() to revert the things > done in arch_add