RE: [PATCH] likely cleanup: revert unlikely in ll_back_merge_fn

[Hua Zhong]

> I'm not at all uninterested in this, I'd just like to see a 
> more intelligent/controlled work load that actually stresses 
> the io subsystem being profiled. If you have a not-so-busy 
> system, you like don't do enough IO to trigger a lot of 
> merges. Or maybe you do, and we just have a bug somewhere so 
> that we unfortunately repeatedly recount segments.

I'm glad we actually found something interesting (bug or not). :-)

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