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Date:	Wed, 22 Aug 2007 23:38:00 +0200
From:	Adrian Bunk <>
	Segher Boessenkool <>,
	Paul Mackerras <>,
	Russell King <>,
	Christoph Lameter <>,,,,,,,,, Nick Piggin <>,,,,,,
	Chris Snook <>,
	Herbert Xu <>,,
	Linus Torvalds <>,,
Subject: Re: [PATCH 0/24] make atomic_read() behave consistently across all

On Tue, Aug 21, 2007 at 06:51:16PM -0400, wrote:
> On Tue, 21 Aug 2007 09:16:43 PDT, "Paul E. McKenney" said:
> > I agree that instant gratification is hard to come by when synching
> > up compiler and kernel versions.  Nonetheless, it should be possible
> > to create APIs that are are conditioned on the compiler version.
> We've tried that, sort of.  See the mess surrounding the whole
> extern/static/inline/__whatever boondogle, which seems to have
> changed semantics in every single gcc release since 2.95 or so.

There is exactly one semantics change in gcc in this area, and that is 
the change of the "extern inline" semantics in gcc 4.3 to the
C99 semantics.



       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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