Re: [PATCH] fixing sendfile on 64bit architectures

[Andi Kleen]

Andrew Morton <akpm@xxxxxxxx> writes:
>
> An alternative might be to remove all the ifdefs, build with
> -ffunction-sections and let the linker drop any unreferenced code...

I am not sure if it will handle EXPORT_SYMBOL correctly. Sometimes
we have the situation that a function is only referenced from EXPORT_SYMBOL,
but we do not want the linker to drop it because modules may use it.
(this regularly causes problems in lib-y files) 

If it did it would be great to use though. I am sure there are other
dead functions around too. Or maybe someday we could even use the 
IPA functionality in gcc 3.4 ... 

-Andi

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