> per-arch?! Wow. Mmm...maybe I have to change something at fs level to > avoid that. An alternative could be to use the follow_pte solution but > avoid the protection via Kconfig if the fs is used on some archs (ia64 > or MIPS), with large pages and so on. An help of the kernel community > to know all these particular cases is welcome. It depends if the protection is a fundamental part of your design (but if it is I would argue that's broken because it's really not very good protection): If it's just an optional nice to have you can stub it out on architectures that don't support it. -Andi -- ak@xxxxxxxxxxxxxxx -- Speaking for myself only. -- 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>