On Fri 26-03-21 09:55:03, Oscar Salvador wrote: > On Fri, Mar 26, 2021 at 09:35:03AM +0100, Michal Hocko wrote: [...] > > Yes this is much better! Just a minor suggestion would be to push > > memory_block all the way to memory_block_online (it oline a memory > > block). I would also slightly prefer to provide 2 helpers that would make > > it clear that this is to reserve/cleanup the vmemamp space (defined in > > the memory_hotplug proper). > > Glad to hear that! > By pushing memory_block all the way to memory_block_{online,offline}, you > mean passing the memblock struct together with nr_vmemmap_pages, > only_type and nid to memory_block_{offline,online}, and derive in there > the start_pfn and nr_pages? memory_block + online_type should be sufficient. -- Michal Hocko SUSE Labs