Re: 2.6.16-rc regression: m68k CONFIG_RMW_INSNS=n compile broken

[Nick Piggin]

Roman Zippel wrote:
> Hi,
>
> On Fri, 3 Mar 2006, Andrew Morton wrote:
>
>
> > Yes, we now require cmpxchg of all architectures.
>
>
> Actually I'd prefer if we used atomic_cmpxchg() instead.
> The cmpxchg() emulation was never added for a good reason - to keep code 
> from assuming it can be used it for userspace synchronisation. Using an 
> atomic_t here would probably get at least some attention.

Yes, I guess that's what Andrew meant. The reason we can require
atomic_cmpxchg of all architectures is because it is only guaranteed
to work on atomic_t.

Glad to hear it won't be a problem for you though.

--
SUSE Labs, Novell Inc.
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