On Fri, 15 Feb 2013 17:28:03 -0500 Johannes Weiner <hannes@xxxxxxxxxxx> wrote: > > Yes, and there will be immediate calmour to add more goodies to the > > other seven bits. PageDirty, referenced state, etc. We should think > > about this now, at the design stage rather than grafting things on > > later. > > I'm interested in your "etc.". PG_error, PG_active, PG_writeback, > page huge? Gawd knows. How many crazy people are there out there? If we adopt my use-runlength-encoding suggestion then things get easier. We add an extra arg to the syscall which selects which particular per-page boolean we're looking for and can gather up to 4 billion different PageFoo()s. -- 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>