Matthew Wilcox <willy@debian.org> wrote:
>
> Jacob's would break if we hashed to different spinlocks. But we don't, we
> shift right by 8, so we get the same spinlock for atomic things that are on
> the same "cacheline" (i think PA cachelines are actually 64 or 128 bytes,
> depending on model).
>
Are you prepared to cast this in stone?
If so then I think Jacob's approach would be preferable, don't you agree?
It needs some compiler-detection magic around the anon union though.
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This archive was generated by hypermail 2b29 : Wed Apr 23 2003 - 22:00:19 EST