Re: atomic_cmpxchg and 64-bit values

Andreas Schwab
2007-01-17T21:36:19Z

Brent Casavant <bcasavan@sgi.com> writes:

> Is there some particular reason we need the cast to int on the
> return path for atomic_cmpxchg()? It looks to me as if this
> macro would work equally well with an atomic_t or an atomic64_t.

No, this is won't work, atomic_cmpxchg is strictly only defined for
atomic_t. See commit 4a6dae6d382e9edf3ff440b819e554ed706359bc.

Andreas.

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Andreas Schwab, SuSE Labs, schwab@suse.de
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