On 30/09/14 01:49 PM, Andy Lutomirski wrote: > > I think it might pay to add an explicit vm_op to authorize > duplication, especially for non-cow mappings. IOW this kind of > extension seems quite magical for anything that doesn't have the > normal COW semantics, including for plain old read-only mappings. This sounds like the best way forwards. Setting up the op for private, anonymous mappings and having it check vm_flags & VM_WRITE dynamically seems like it would be enough for the intended use case in general purpose allocators. It can be extended to other mapping types later if there's a compelling use case. -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
