Re: Linux 2.6.25-rc2

[Jiri Kosina]

On Wed, 27 Feb 2008, Andrew Morton wrote:

> Doing ++ on a u32 _is_ atomic wrt interrupts on x86 and probably lots of
> other architectures, so we're OK using unsigned there.  

So you make implicit assumptions about how gcc compiles your ++? I am 
afraid you can't do that, gcc is absolutely free to turn variable++; 
statement to non-atomic sequence of instructions (memory->register load, 
increment register, for example).

-- 
Jiri Kosina
SUSE Labs

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