On Fri 16-11-18 12:05:04, osalvador wrote: > On Fri, 2018-11-16 at 10:57 +0100, Michal Hocko wrote: [...] > > E.g. memory hotplug decreases both managed and present counters. I > > am actually not sure that is 100% correct (put on my TODO list to > > check). There is no consistency in that regards. > > We can only offline non-reserved pages (so, managed pages). Yes > Since present pages holds reserved_pages + managed_pages, decreasing > both should be fine unless I am mistaken. Well, present_pages is defined as "physical pages existing within the zone" and those pages are still existing but they are offline. But as I've said I have to think about it some more -- Michal Hocko SUSE Labs
