Re: block layer sg, bsg

[Andi Kleen]

"David S. Miller" <davem@xxxxxxxxxx> writes:
>
> Or use a more portable well-defined type which does not change
> size nor layout between 32-bit and 64-bit environments.

That is usually a mistake. People get the more subtle issues
like long long handling wrong, and then it is impossible to fix it 
anymore in a compat layer (examples are ipsec and iptables, which
cannot be emulated on x86-64 because of that) 

So please never pass any structures with read/write/netlink.

Thank you.

-Andi

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