Arnd Bergmann <arnd@xxxxxxxx> wrote: > Given a 64 bit flag word, you can start using bits for the version from > the top and bits from the bottom for fields: I suppose. It's cleaner, though, to keep them separate. > Alternatively, you can also make it a 64 bit argument everywhere, which has > some other small disadvantages. No, you can't. 32-bit systems can only pass 32-bit arguments. If you're suggesting passing a pointer to a 64-bit argument instead, how's that any different from my suggestion of a separate parameter block? > The idea of a syscall API with multiple fixed-length and variable-length > fields in the same structure scares me. If you want to go this far, > it may be better to base the interface on netlink and allow querying > multiple files at once. Urgh. Netlink is way too much overhead and even scarier. That's pretty much a guarantee that people won't use it. It also has to work if CONFIG_NET=n. David -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
