My point is this ioctl will be restricted to one user (Xserver if i understand) and only this user, there is no fork in it so no need to worry about fork, just setting the vma as locked will be enough. But i don't want people reading this driver suddenly think that what it's doing is ok, it's not, it's hack and can never make to work properly on a general case, that's why it needs a big comment stating, stressing that. I just wanted to make sure Inki and Kyungmin understood that this kind of ioctl should be restricted to carefully selected user and that there is no way to make it general or reliable outside that.
first off, I'm not drm guy and then I don't intend to insist you. but if application don't use fork, get_user_pages() has no downside. I guess we don't need VM_LOCKED hack. but again, up to drm folks. -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>