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SubjectRe: call_function_many: fix list delete vs add race
On Tue, 2011-02-01 at 12:43 +1000, Linus Torvalds wrote:
> On Tue, Feb 1, 2011 at 12:18 PM, Paul E. McKenney
> <> wrote:
> >
> > Documentation/memory-barriers.txt specifies this.
> Good, so it really is documented, with both cases explicitly mentioned.
> That said, I do think that if your memory ordering is much weaker than
> x86, you are going to see bugs that most testers don't see, and it
> simply might not be worth it.

Allright. The way we do it on power is stores won't pass the unlock
either way (lwsync). Some loads might migrate up tho.


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