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SubjectRe: current_is_kswapd is a function
Andrew Morton wrote:
> It would probably be worthwhile teaching the compiler to generate a warning
> in this case; I doubt if anyone is likely to want to find out at runtime
> whether the linker happened to place a particular function at address zero.
> I shall suggest that.

I agree it would be a very useful warning.

Testing the address is useful occasionally, to ask whether the target
of a weak linkage reference was linked in, so a syntax is needed to
suppress the warning, such as "&function != 0".

-- Jamie
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