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SubjectRe: [PATCH v2] slab,slub: ignore __GFP_WAIT if we're booting or suspending

> As explained by Benjamin Herrenschmidt:
> Oh and btw, your patch alone doesn't fix powerpc, because it's missing
> a whole bunch of GFP_KERNEL's in the arch code... You would have to
> grep the entire kernel for things that check slab_is_available() and
> even then you'll be missing some.
> For example, slab_is_available() didn't always exist, and so in the
> early days on powerpc, we used a mem_init_done global that is set form
> mem_init() (not perfect but works in practice). And we still have code
> using that to do the test.
> Therefore, ignore __GFP_WAIT in the slab allocators if we're booting or
> suspending.

Ok... GFP_KERNEL allocations normally don't fail; now they
will. Should we at least force access to atomic reserves in such case?
(cesky, pictures)

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