Christoph Lameter wrote:
On Wed, 29 Mar 2006, Nick Piggin wrote:
However, I think it might be reaonsable to use bit lock operations for
in places like page lock and buffer lock (ie. with acquire and relese
semantics). It improves ia64 without harming other architectures, and
also makes the code more expressive.
How would be express the acquire and release semantics?
Hmm, not sure. Maybe a few new bitops with _lock / _unlock postfixes?
For page lock and buffer lock we'd just need test_and_set_bit_lock,
clear_bit_unlock, smp_mb__after_clear_bit_unlock.
I don't know, _for_lock might be a better name. But it's getting long.
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