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SubjectRe: build fix for x86_64...
Luck, Tony wrote:
>
> Which is better. But if we unconditionally set this CONFIG variable, then the
> code in fs/quota.c will have to read:
>
> #if defined(CONFIG_COMPAT) && defined(CONFIG_COMPAT_FOR_U64_ALIGNMENT)
>
> We can keep it simpler if the Kconfig file does the conditional for us:
>
> config COMPAT_FOR_U64_ALIGNMENT
> def_bool y
> depends on COMPAT
>

No, that would be bad. If compat_u64 is used to carry 32-bit ABIs
forward into 64-bit space without needing compatibility hacks, then this
would actually introduce ABI incompatibilities depending on CONFIG_COMPAT!

-hpa
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