Messages in this thread | | | Date | Wed, 27 Mar 2013 23:55:59 +0100 | From | Michal Hocko <> | Subject | Re: [PATCH 09/10] memory-hotplug: enable memory hotplug to handle hugepage |
| |
On Wed 27-03-13 17:29:19, Naoya Horiguchi wrote: > On Wed, Mar 27, 2013 at 03:19:21PM +0100, Michal Hocko wrote: [...] > > If we made sure that all page on the hugepage_freelists have reference > > 0 (which is now not the case and it is yet another source of confusion) > > then the whole loop could be replaced by page_count check. > > I think that free hugepages have refcount 0,
You are right. For some reason I totally missed that we drop the reference from page allocator (put_page_testzero in gather_surplus_pages).
Sorry about the stupit question. -- Michal Hocko SUSE Labs
| |