On Thu, 12 Aug 2010, Naoya Horiguchi wrote: > > Can you also avoid refcounts being increased during migration? > > Yes. I think this will be done in above-mentioned refactoring. Thats not what I meant. Can you avoid other processors increasing refcounts (direct I/O etc?) on any page struct of the huge page while migration is running? > This patch only handles migration under direct I/O. > For the opposite (direct I/O under migration) it's not true. > I wrote additional patches (later I'll reply to this email) > for solving locking problem. Could you review them? Sure. > (Maybe these patches are beyond the scope of hugepage migration patch, > so is it better to propose them separately?) Migration with known races is really not what we want in the kernel. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>