On Tue, Feb 17, 2015 at 04:02:49PM -0800, Andrew Morton wrote: > On Tue, 17 Feb 2015 15:57:44 -0800 Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > > > So if I'm understanding this correctly, hugepages never have PG_lru set > > and so you are overloading that bit on hugepages to indicate that the > > page is present on hstate->hugepage_activelist? > > And maybe we don't need to overload PG_lru at all? There's plenty of > free space in the compound page's *(page + 1). Right, that's not necessary. So I'll use PG_private in *(page + 1), that's unused now and no worry about conflicting with other usage. Thanks, Naoya Horiguchi -- 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