Re: Confusion in usr/include/asm-generic/fcntl.h

[Arnd Bergmann]

On Wednesday 21 January 2009, Sam Ravnborg wrote:
> Could we add a new symbol for this?
> We know we are going to use this in several places so a simpler variant
> would be more readable.
> 
> Something like:
> 
> #ifdef __64BIT
> ...
> #endif
> 
> When we define __64BIT we would use the  __BITS_PER_LONG == 64 check.

I would prefer using the __BITS_PER_LONG == 64 check directly, because
it gives you a warning when __BITS_PER_LONG is undefined, whereas the
#ifdef check gets easily fooled by include order problems. Note that
this is not a problem in the kernel for CONFIG_* symbols which are
always defined before the first #include.

	Arnd <><
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