On Sun, 28 Oct 2007, Pekka J Enberg wrote:

> -     local_irq_restore(flags);
> +     object = do_slab_alloc(s, c, gfpflags, node, addr);
> +     if (unlikely(!object))
> +             goto out;

Undoing the optimization that one of the earlier patches added.

The #ifdef version is for me at least easier to read. The code there is a 
special unit that has to deal with the most performance critical piece of 
the slab allocator. And the #ifdef there clarifies that any changes have 
to be done to both branches.

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