On Wed, Feb 07, 2018 at 01:30:47PM -0800, Matthew Wilcox wrote: > From: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx> > > We're already using a union of many fields here, so stop abusing the > _map_count and make page_type its own field. That implies renaming some > of the machinery that creates PageBuddy, PageBalloon and PageKmemcg; > bring back the PG_buddy, PG_balloon and PG_kmemcg names. Sounds reasonable to me. > Also, the special values don't need to be (and probably shouldn't be) powers > of two, so renumber them to just start at -128. Are you sure about this? Is it guarantee that we would not need in the future PG_buddy|PG_kmemcg for instance? I guess we may want to make it a bitfield. In negative space it's kinda interesting. :) -- Kirill A. Shutemov -- 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=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
